Answer:
Assuming the spinner has 6 equal sectors of different colors, and yellow is only one of those colors, we can say that the probability of the spinner not landing on yellow is 5/6 or approximately 0.8333.
To predict the number of times the spinner will not land on yellow out of 90 spins, we can multiply the probability by the total number of spins:
0.8333 x 90 = 74.997 or approximately 75
Therefore, the best prediction possible for the number of times the spinner will not land on yellow out of 90 spins is 75 times.
rewrite the fractions 2/3 and 4/15 as fraction with least common denominator
Answer: To rewrite the fractions 2/3 and 4/15 with the least common denominator (LCD), we need to find the smallest multiple that both denominators, 3 and 15, divide into evenly.
The prime factorization of 3 is 3, and the prime factorization of 15 is 3 * 5.
To find the LCD, we take the highest power of each prime factor that appears in either denominator. In this case, the highest power of 3 is 3, and the highest power of 5 is 5.
The LCD is the product of these highest powers: LCD = 3 * 5 = 15.
Now, we can rewrite the fractions with the least common denominator:
2/3 = (2/3) * (5/5) = 10/15
4/15 = (4/15) * (1/1) = 4/15
Therefore, the fractions 2/3 and 4/15 can be rewritten with the least common denominator as 10/15 and 4/15, respectively.
Step-by-step explanation:
A group of students was asked to pick a favorite primary color. The results are shown in the table.
Red Green Blue Total Male 12 24 4 40 Female 15 30 5 50 Total 27 54 9 90
Question
Which statement correctly explains the association between being male and favoring the color blue?
Answer options with 5 options
A.
There is a negative association because the number of males who responded to the survey is less than the number of females.
B.
There is a negative association because the number of males who chose blue is less than the number of females who chose blue.
C.
There is a negative association because the number of males who chose blue is the smaller than the number of males who chose the other colors.
D.
There is no association because the percent of males who chose blue is equal to the percent of females that chose blue.
E.
There is no association because the percent of individuals who are male and chose blue is not equal to the percent of individuals who are female and chose blue.
The correct statement that explains the association between being male and favoring the color blue is:
B. There is a negative association because the number of males who chose blue is less than the number of females who chose blue.
In the given table, it can be observed that out of the total 90 students surveyed, 9 students (4 males and 5 females) decided the color blue as their favorite primary color. Since the number of males (4) who selected blue is less than the number of females (5) who chose blue, there is a negative association between being male and favoring the color blue.
Multiplying polynomials (8v - 5)(v + 7)
Step-by-step explanation:
To multiply the polynomials (8v - 5)(v + 7), we can use the distributive property:
(8v - 5)(v + 7) = 8v(v + 7) - 5(v + 7)
Now we can simplify by multiplying each term:
8v(v + 7) - 5(v + 7) = 8v^2 + 56v - 5v - 35
Finally, we can combine like terms to get the simplified expression:
8v^2 + 51v - 35
Therefore, (8v - 5)(v + 7) = 8v^2 + 51v - 35.
Match the trigonometric expressions to their solutions.
cos [140°- (50° +30°)]
√3
tan 240°
-√6-√2
cos 150°
1
Reset
Next
sin 255
Hi,
cos[140˚- ( 50˚ + 30˚)] = 1/2
tan 240˚ = √3
cos 150˚ = -√3/2
sin 255˚ = -√6 - √2/4
Those above should be the correct ones
XD
Jesse took a survey of her classmates on how many pairs of shoes they owned.
Which frequency distribution matches the data
{3,8,5,6,4,3,7,8,9,5,5,6,4,12,14,10,8}
The frequency distribution that matches the data {3,8,5,6,4,3,7,8,9,5,5,6,4,12,14,10,8} is C.
Number
of Shoes Frequency
3-5 7
6-8 6
9-11 2
12-14 2
What is a frequency distribution?A frequency distribution is a frequency table or chart that visually displays the actual number of observations in each range or class or the percentage of the observations.
In this frequency distribution, the group 3-5 has the highest frequency of 7 followed by 6-8 with 6 frequencies.
3,8,5,6,4,3,7,8,9,5,5,6,4,12,14,10,8
Number
of Shoes Frequency
3-5 IIIIIII 7
6-8 IIIIII 6
9-11 II 2
12-14 II 2
Total 17
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Which is the radian measure for 30° and its associated coordinate point on the unit circle?
7 pie/6
Pie over 6
Answer:
57
Step-by-step explanation:
this is the boybfiend
50 Points! Multiple choice geometry question. Photo attached. Thank you!
This is a simple one.
All you need to do is find the scale factor of the shapes. (How much has it decreased by?)
Wecan find this by doing 15 ÷ 20 (not the other way round because we want to find the scale factor for the bigger rectangle to the smaller)
15 ÷ 20 = 0.75
So to find the area all you need to do is times the area with the scale factor which is 0.75
500 x 0.75 = 375cm²
So the answer is
(A) 375cm²
x^2-2y=5 and 4y+z=7 write z in terms of x
The equation is written as z = 7 + (20 -4x²/2)
How to make the subject
From the information given, we have that the equations as;
x²-2y=5 ( 1)
4y+z=7 (2)
From equation (1), make y the subject of formula, we have;
-2y= 5 - x²
Divide both sides by the coefficient of the variables, we have;
y = 5 - x²/-2
y = -5 + x²/2
Now, substitute the value of y in (2), we have;
4 (-5 + x²/2) + z = 7
expand the bracket
-20 + 4x²/2 + z = 7
collect the like terms, we have;
z = 7 + (20 -4x²/2)
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help please show work
The slope of line AD will be 4/3
Given,
ABCD is a square.
AB ⇒ y = -3/4 x + 7
Now,
AB is straight line.
Straight line equation ⇒ y =mx + c
m = slope of line
c = y intercept
Here,
m = -3/4 ( slope of line AB )
Now for slope of line AD,
ABCD is a square. Thus AB and AD are perpendicular to each other.
According the relation,
[tex]m_{1} m_{2} = -1[/tex]
[tex]m_{1}[/tex] = slope of line 1
[tex]m_{2}[/tex] = slope of line 2
So,
-3/4 [tex]m_{2}[/tex] = -1
[tex]m_{2}[/tex] = 4/3.
Hence slope of AD is 4/3 .
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Simplify. Write your answers without exponents. 4^ -5/2= (1/16)^-3/2=
Please look at photo for accuracy
The value of the given expression is,
[tex]4^{- 5/2[/tex] = 1/32
[tex](1/16) ^ {- 3/2[/tex] = 64
We have to given that,
Expressions to solve are,
⇒ [tex]4^{- 5/2[/tex]
And, [tex](1/16) ^ {- 3/2[/tex]
We know that,
Exponentiation is the process of expressing huge numbers in terms of powers. That is, exponent refers to the number of times a number has been multiplied by itself
Now, We can simplify the given expression,
By using law of exponents
We get,
⇒ [tex]4^{- 5/2}[/tex]
⇒ [tex]2^{2(- 5/2)}[/tex]
⇒ 2⁻⁵
⇒ 1/2⁵
⇒ 1/32
Thus,
The value of [tex]4^{- 5/2[/tex] = 1/32
The given expression is,
⇒[tex](1/16) ^ {- 3/2[/tex]
By using law of exponents
We get,
⇒ [tex]16 ^{3/2}[/tex]
⇒ [tex](4^2)^{3/2}[/tex]
⇒ 4³
⇒ 64
The value of [tex](1/16) ^ {- 3/2[/tex] = 64
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Verify:
sin(x)/1-cos(x) - sin(x) cos(x)/1+cos(x) = csc (x) (1 + cos² (x))
Using trigonometric identities sin(x)/[1 - cos(x)] - sin(x)cos(x)/[1 + cos(x)] = csc (x)(1 + cos² (x)),
What are trigonometric identities?Trigonometric identities are equations that contain trigonometric ratios.
To verify the trigonometric identity
sin(x)/[1 - cos(x)] - sin(x)cos(x)/[1 + cos(x)] = csc (x)(1 + cos² (x)), we need to show that Left Hand Side, L.H.S equals Right Hand Side R.H.S. We proceed as follows.
L.H.S = sin(x)/[1 - cos(x)] - sin(x)cos(x)/[1 + cos(x)]
Taking the L.C.M, we have that
{sin(x)[1 + cos(x)] - sin(x)cos(x)[1 - cos(x)]}/[1 - cos(x)][1 + cos(x)]
Expanding the brackets, we have that
{sin(x) + sin(x)cos(x)] - sin(x)cos(x) + sin(x)cos²(x)]}/[1 - cos(x)][1 + cos(x)]
Simplifying, we have that
= {sin(x) + 0 + sin(x)cos²(x)]}/[1 - cos²(x)] Since ([1 - cos(x)][1 + cos(x)] = [1 - cos²(x)]
= {sin(x) + sin(x)cos²(x)]}/sin²(x) [since sin²(x) = 1 - cos²(x)]
Factorizing out sinx in the equation, we have that
= {sin(x)(1 + cos²(x)]}/sin²(x)
= (1 + cos²(x)]}/sin(x)
= cosec(x)(1 + cos²(x)]} (since cosec(x) = 1/sin(x))
= R.H.S
Since L.H.S = R.H.S, we have that
sin(x)/[1 - cos(x)] - sin(x)cos(x)/[1 + cos(x)] = csc (x)(1 + cos² (x))
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carlos tiene 18 años y juan 42en cuantos años la edad de juan sera el doble de la de carlos es ese entonces
In 6 years Juan will have the double of Carlos age.
When Juan will have double of Carlos's age?The ages of each one are:
Carlos = 18 years old.
Juan = 42 years old.
In x years, they will have:
C = 18 + x
J = 42 + x
Carlos will have the double of Juan's age when:
J = 2*C
Replacing the equations we will get the linear equation:
42 + x = 2*(18 + x)
Solving for x we will get:
42 +x = 36 + 2x
Solving for x:
42 - 36 = 2x - x
6 = x
So Juan will have the double of Carlos age in 6 years.
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an online store begins selling a new kind of baskelballshoe. At week zero, 30 pairs of shoes were sold.
In week 3, the store sold 240 pairs of shoes. Write an exponential model that relates the number of shoes sold to the week number, and use the model to predict how many shoes will be sold during week 7.
Answer:
3840 pairs of shoes
Step-by-step explanation:
To write an exponential model that relates the number of shoes sold to the week number, we can use the general form of an exponential function:
y = a * b^x
where:
y is the number of shoes sold,
x is the week number, and
a and b are constants to be determined.
Given the information:
In week 0, 30 pairs of shoes were sold.
In week 3, 240 pairs of shoes were sold.
We can use these two data points to determine the values of a and b.
Using the data point for week 0:
30 = a * b^0
30 = a
Using the data point for week 3:
240 = 30 * b^3
8 = b^3
b = 2 (taking the cube root of both sides)
Therefore, the exponential model that relates the number of shoes sold to the week number is:
y = 30 * 2^x
To predict the number of shoes sold during week 7, we substitute x = 7 into the model:
y = 30 * 2^7
y = 30 * 128
y = 3840
Therefore, the model predicts that 3840 pairs of shoes will be sold during week 7.
Given the diagram below, determine the measure of angles A, B, and C.
Hello!
A = 115° => opposite
B = 115° => corresponding angles
C = 65° => 180° - 115°
Answer:
A = 115 degrees
B = 115 degrees
C = 65 degrees
Step-by-step explanation:
A is opposite of 115 so it is 115 degrees.
B is 115 because it is on a parellel line to the one of 115
C is 180 minus B, which is 180 - 115 = 65
X-4<5 graph the solution of
The graph of the solution of the inequality is attached
How to graph the solution of the inequalityFrom the question, we have the following parameters that can be used in our computation:
x - 4 < 5
Add 4 to both sides of the inequality
So, we have
x - 4 + 4 < 5 + 4
Evaluate the like terms
So, we have
x < 9
This means that the solution of the inequality is x < 9
See attachment for the graph
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What is the measure of angle T and angle V?
The measures of angle T and angle V are T = 90 and V = 90
How to determine the measure of angle T and angle V?From the question, we have the following parameters that can be used in our computation:
The circle
The point T and V are at the tangent of the circle
By definition, the tangent is perpendicular to the radius of the circle, with which it intersects.
This means that the angle T and angle V are right angled
Using the above as a guide, we have the following:
T = 90 and V = 90
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pedro walks at a rate of 4 miles per hour and runs at a rate of 8 miles per hour. Each Week, his exercise program requires him to cover a total fist of 20 miles with some combination of walking and/or running.
A. write an equation that represents the different amounts of time pedro can walk, x, and run, y, each week.
B. graph the equation
C. what is the y- intercept? what does this tell you?
The equation showing the problem is: 4x + 8y = 20
The graph is attached and the y intercept is (0, 2.5)
How to model the equationAssuming that:
Time spent walking x hoursTime spent running y hoursSince Pedro walks at a rate of 4 miles per hour, the distance he covers by walking would be
4x milesAlso Pedro runs at a rate of 8 miles per hour, the distance he covers by running would be
8y milesAccording to the given information, the total distance Pedro covers each week is 20 miles. Therefore, we can write the equation:
4x + 8y = 20
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What is the meaning of "The field of a relation R"?
The meaning of "The field of a relation R" is a constraint on the values that can be stored in that attribute.
We are given that;
The statement The field of a relation R
Now,
According to the web results, the field of a relation R is the set of all values that appear in the relation R. In other words, it is the union of all the attributes (columns) of R. For example, if R is a relation with attributes A, B, and C, then the field of R is the set of all values that appear in A, B, or C. The field of R can also be denoted by F.
The field of a relation is different from the domain of an attribute, which is the set of all possible values that an attribute can take. For example, if A is an attribute that can only take integer values, then the domain of A is the set of all integers. The domain of A may be larger than the field of A, which is the set of all values that actually appear in A. The domain of an attribute defines a constraint on the values that can be stored in that attribute.
Therefore, by the domain the answer will be a constraint on the values that can be stored in that attribute.
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A conveyor belt carries supplies from the first floor to the second floor which is 23 feet higher. The belt makes a 60-degree angle with the ground.
How far do the supplies travel from one end of the conveyor belt to the other? Round your answer to the nearest foot.
PLEASE no spam!!
Answer:
caculations below
Step-by-step explanation:
A conveyor belt carries supplies from the first floor to the second floor which is 23 feet higher. The belt makes a 60-degree angle with the ground.
To calculate the distance traveled by the supplies from one end of the conveyor belt to the other, we can use the trigonometric function of sine.
sin(60) = opposite / hypotenuse
Here, the opposite side is the height difference between the two floors, which is 23 feet.
sin(60) = 23 / hypotenuse
To find the hypotenuse, we can rearrange the above equation:
hypotenuse = 23 / sin(60)
Using a calculator, we get:
hypotenuse = 26.5 feet
Therefore, the supplies travel approximately 26.5 feet from one end of the conveyor belt to the other.
Rounding the answer to the nearest foot, we get:
The supplies travel approximately 27 feet from one end of the conveyor belt to the other.
40 points. I need help with this, so I can explain it to my son. Thank you in advance
The functions of the coefficients of the quadratic equation indicates that the correct statements are;
a. The y-intercept of the function is (0, c)
c. The coefficient b determines the horizontal shift of the parabola compared to the parent function
d. If a is negative, the parabola opens upwards
What are the functions of the quadratic equation?The quadratic equation is; y = a·x² + b·x + c
The functions of the coefficients of the above quadratic function are;
a = The scale factor, and the coefficient that determines the direction the projectile faces.
a < 1; Indicates that the graph is wider than the parent function
a > 1; Indicates that the graph is narrower than the parent function
a < 0; Indicates that the parabola opens downward
a > 0; Indicates that the parabola opens upwards
b = The coefficient b together with coefficients a and c determines the coordinate of the vertex of the graph of the quadratic function, which is; (-b/(2·a), -D/(4·a))
Where;
D = The discriminant
Therefore, b determines the x-value, and therefore, the horizontal shift of the parabola compared to the parent function
c = The y-coordinate of the y-intercept of the quadratic function, which is (0, c)
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find the surface area
The surface area of the triangular prism is 193.05 cm².
We have,
The figure is a triangular prism.
Now,
There are 4 triangular surfaces.
Each surface area is the same except the base surface.
So,
3 surface area.
= 3 x (1/2 x 9 x 11.3)
= 3 x 50.85
= 152.55 cm²
And,
Base surface area.
= 1/2 x 9 x 9
= 40.5 cm²
Now,
The surface area of the triangular prism.
= 152.55 + 40.5
= 193.05 cm²
Thus,
The surface area of the triangular prism is 193.05 cm².
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Which of the following statements are true? Check all of the boxes that apply.
f(x) = 2√x has the same domain and range as f(x)=√x
f(x) = -2√x has the same domain and range as f(x)=√x
f(x) = -√x has the same domain as f (x)=√x, but a different range.
f(x)=√x has the same domain as f(x)=√x, but a different range
0 0 0 0
DONE ✔
Intro
15 of 19
The correct statements regarding the domain and the range of the functions are given as follows:
f(x) = 2√x has the same domain and range as f(x)=√xf(x) = -√x has the same domain as f (x)=√x, but a different range.How to obtain the domain and range of a function?The domain of a function is defined as the set containing all the values assumed by the independent variable x of the function, which are also all the input values assumed by the function.The range of a function is defined as the set containing all the values assumed by the dependent variable y of the function, which are also all the output values assumed by the function.For the square root function, we have that:
The domain is x >= 0.The range is y >= 0.Hence if we multiply the function by a negative number, the domain of the function remains constant, but the range is changed.
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6.56*10^-7 by 4.86*10^-7
6.56 × [tex]10^{-7}[/tex] by 4.86×[tex]10^{-7}[/tex] is 3.18816 × [tex]10^{-13}[/tex] is factorize.
To find the product of 6.56 × [tex]10^{-7}[/tex] by 4.86×[tex]10^{-7}[/tex]. The conventions of scientific notation can be applied. To get 31.8816, we must first multiply the coefficients, which are 6.56 and 4.86. The exponents, which are -7 and -7, are then added to provide -14.
The product of 6.56 × [tex]10^{-7}[/tex] by 4.86 × [tex]10^{-7}[/tex] is 3.18816 × [tex]10^{-13}[/tex] This, according to the conventions of scientific notation, can be calculated by multiplying the coefficients and adding the exponents.
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NEED HELP ASAP WILL GIVE BRAINLIEST HELP!
Answer:
∠ 1 and ∠ 3 = 180°
Step-by-step explanation:
∠ 1 and ∠ 3 are same- side interior angles and sum to 180° , that is
∠ 1 + ∠ 3 = 180
These shapes are similar.
Find X.
X
5
9
27
15
21
The value of X is 7.
Given that the set of number are in pattern,
X, 5, 9, 27, 15, 21.
To find the value of X such that given numbers are in pattern.
The next three number are three times of first three numbers respectively.
Let a, b, c is the first three numbers then 3a, 3b, 3c are next three numbers.
Consider the given set of numbers, X, 5, 9, 9 × 3, 5 × 3, 21.
By using the data and the pattern set gives,
3X = 21.
Divide by 7 on both sides,
X = 7.
Hence, the value of X is 3
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how many cubic inches will a rectangular pyramid hold if its 15 in height by 12 inches base
The number of cubic inches that the rectangular pyramid will hold if it has 15 inches height and 12 inches base is 720 inches³.
Here we have to find the volume of the pyramid since cubic unit means the volume.
We know that,
Volume of any pyramid = 1/3 × Base area × Height
Here the given pyramid is a rectangular pyramid.
Base of the pyramid will be a rectangle.
So, base area = length × width
Now given that,
Base is 12 inches.
Since there is only a dimension, width and length will be equal to 12 inches.
So base area = 12 × 12 = 144 inches²
Height = 15 inches
Volume of the pyramid = 1/3 × 144 × 15
= 720 inches³
Hence the volume is 720 inches³.
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What is the meaning of "If Y = ran(f), then f is a function onto Y"?
The statement implies that the function f has a surjective property, ensuring full coverage of the target set Y.
The statement "If Y = ran(f), then f is a function onto Y" can be understood in the context of mathematical functions and their range.
In mathematics, a function is considered "onto" or "surjective" if every element in the target set (in this case, Y) has a pre-image in the domain set. In other words, for every element y in Y, there exists at least one element x in the domain set such that f(x) = y.
The given statement is saying that if Y is equal to the range of the function f, then f is a function that covers or maps onto every element in Y. In this case, the function f has a mapping for each element in the set Y, ensuring that no element in Y is left without a pre-image in the domain set.
Thus, the statement implies that the function f has a surjective property, ensuring full coverage of the target set Y.
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Instead of multiplying a number by 1/4, I multiplied it by 1/8 and got 2. What was I originally supposed to get as a result?
PLS HELP ME!!
50 Points! Multiple choice geometry question. Photo attached. Thank you!
The value of x is 8 units.
Given that a right triangle, with an altitude dividing the hypotenuse into 4 and 16 units,
The measure of the altitude is x we need to find the measure of the x,
So, according to the definition of similarity,
Their corresponding sides are proportional,
We get,
x / 4 = 16 / x
x² = 4 × 16
x² = 64
x = 8
Hence the value of x is 8 units.
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Cold Beans wants to make a blend of their two best coffees, Guatemalan and Jamaican coffee. The pound of Guatemalan Coffee costs $11/lb and the other one costs $5/lb. If they want the cost of a 6 pound bag of blend to be $8/lb, how much Guatemalan coffee should they use per pound of the blend?
For each pound of the blend, Cold Beans should use 3 pounds of Guatemalan coffee.
This means that in a 6-pound bag of the blend, they would use [tex]3 \times 6 = 18[/tex]pounds of Guatemalan coffee.
Let's assume that x pounds of Guatemalan coffee are used per pound of the blend.
Given information:
Cost of Guatemalan coffee = $11/lb
Cost of the other coffee = $5/lb
Desired cost of the blend = $8/lb
Total weight of the blend = 6 pounds
To find the ratio of Guatemalan coffee to the total blend, we can set up the equation:
[tex](x \times 11 + (6 - x) \times 5) / 6 = 8[/tex]
In this equation, [tex](x \times 11)[/tex] represents the cost of the Guatemalan coffee in the blend, and[tex]((6 - x) \times 5)[/tex] represents the cost of the other coffee in the blend.
The numerator is the total cost of the blend, and we divide it by 6 (the total weight of the blend) to find the cost per pound.
Now, let's solve the equation for x:
(11x + 30 - 5x) / 6 = 8
6x + 30 = 48
6x = 48 - 30
6x = 18
x = 18/6
x = 3
Therefore, for each pound of the blend, Cold Beans should use 3 pounds of Guatemalan coffee.
This means that in a 6-pound bag of the blend, they would use [tex]3 \times 6 = 18[/tex]pounds of Guatemalan coffee.
To summarize, to achieve a cost of $8 per pound for a 6-pound bag of blend, Cold Beans should use 3 pounds of Guatemalan coffee per pound of the blend.
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