Answer:
20x + 2
Step-by-step explanation:
The numbers 32 and 12 are each rounded to the nearest ten and then multiplied to estimate the product. What is the best estimate of 32 × 12 based on this method?
Answer:
300
Step-by-step explanation:
32 rounds to 30.
12 rounds to 10.
30 × 10 = 300
Answer: 300
Answer:
[tex]beinggreat78~here~to~help.[/tex]
So the method is clearly stating that we need to round to the nearest ten, so let's round using the rule set.
If the number is below 5, round down.If the number is 5, round up.If the number is above 5, also round up.This array should help you vision the sequence better.
⇒ [tex]\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right][/tex]
Now, using the rounding ruleset, we have to find what to round to. Since 32 and 12 both have a ones digit below 5, we round down, meaning we now have 30 and 10. The last step is to multiply 30 by 10 to get your estimate.
[tex]30[/tex]
[tex]*~10[/tex]
▬▬
[tex]300[/tex]
With this information, your answer is 300(rounded to nearest ten)!
A house blueprint has a scale of 1 in. : 6 ft. The length and width of each room in the actual house are shown in the table. Complete the table by finding the length and width of each room on the blueprint.
Answer:
The dimensions of the rooms in the blueprint will be Living room (), Kitchen (), Office (), Bedroom (), Bedroom (), Bathroom ().
Given information:
A house blueprint has a scale of 1 in : 4 ft.
The length and width of each room in the actual house are shown in the table below:
Living room Kitchen Office Bedroom Bedroom Bathroom
Length 20 16 8 8 20 6
width 8 16 16 16 20 8
The scale factor is of 1 in: 4 ft. So, 4 ft of actual length is equivalent to 1 inch in the blueprint.
So, the length and width of the different rooms in te house in the blueprint will be,
Living room Kitchen Office Bedroom Bedroom Bathroom
Length(in) 5 4 2 2 5 1.5
width(in) 2 4 4 4 5 2
Therefore, the dimensions of the rooms in the blueprint will be Living room (), Kitchen (), Office (), Bedroom (), Bedroom (), Bathroom ().
For more details, refer to the link:
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Step-by-step explanation:
hope this helps
Find the solution of the system of equations. x-3y= -13
2x+15y=16
Answer: [tex]x=-7, y=2[/tex]
Step-by-step explanation:
Multiplying the first equation by 2 gives [tex]2x-6y=-26[/tex]
Subtracting this from the second equation yields [tex]21y=42 \longrightarrow y=2[/tex]
Substituting this back into the first equation gives that [tex]x=-7[/tex]
[tex]\therefore x=-7, y=2[/tex]
WILL GIVE BRAINLY
Triangle ABC is similar to triangle WYZ.
Select all angles whose cosine equals [tex]\frac{3}{5}[/tex]
Question 1 options:
Angle B
Angle Y
Angle Z
Angle C
Angle A
Angle W
Answer:Angle W and Angle C
Step-by-step explanation:
The angles whose cosine equals 3/5 are <A and <W.
What is Trigonometry?One area of mathematics known as trigonometry examines the relationship between the sides and angles of a right triangle. The relationship between sides and angles is defined for 6 trigonometric functions.
We have,
ΔACB and ΔWZY are similar to each other.
Now, Using trigonometry
cosine = Adjacent leg/ Hypotenuse
We have cosine = 3/5
where Adjacent side =3 and Hypotenuse = 5
So, the angle which have Adjacent side 3 in both triangles are
<A and <W.
Learn more about Trigonometry here:
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a swim team consists of seven boys and four girls a relay team of four swimmers is chosen at random from the team members what is the probability that two boys are selected for the relay team given that the first two selections were girls
Answer:
16/121
Step-by-step explanation:
First, we need to calculate the chance of a girl being selected for the first pick.
Since there are 4 girls and 7 boys, there are 11 total members on the team. Since 4 of them are girls, there is a [tex]4/11[/tex] chance that a girl is chosen first pick.
Next, to find the chance of the second selection to also be a girl, we have to multiply 4/11 by 4/11 to find that total.
[tex]\frac{4}{11} *\frac{4}{11} =\frac{16}{121}[/tex]
Therefore, the chance of the first two selections being girls is 16/121.
#LearnWithBrainly
IM STUCK CAN SOMEBODY SOLVE THE EQUATION
Answer:
1.) 400, all you have to do is subtract the two populations and it gives you the amount that it grew by.
2.) it took 2 years, because that is the difference between 2005 and 2007.
3.)if you could tell me the option then that might help? but it grew on an average of 200 students per year.
4.)1002 would be the answer because if it goes down by 200 a year, then you have to subtract 2002-1000 giving you the answer
Step-by-step explanation:
hope this helps.
One side of a rectangle is twelve feet longer than three times another side of the rectangle . Find the sides we also know that the area of the rectangle is 231f * t ^ 2
Answer:
Length: 33 ft
Width or side: 7 ft
Step-by-step explanation:
Check the attachment.
Meena buys cookies and apples at the store.
She pays a total of $24.02.
She pays a total of $6.90 for the cookies.
She buys 4 bags of apples that each cost the same amount.
How much does each bag of apples cost?
Answer:
each apple would cost $4,28
The cost of each bag of apples is 4.28 dollars.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
We have been given that Meena buys cookies and apples at the store.
Meena pays a total amount of $24.02.
She pays a total amount of $6.90 for the cookies.
She buys 4 bags of apples which each cost the same amount.
The total cost of apples = 24.02 - 6.90
= 17.12
Therefore, each bag of apples cost = 17.12/ 4 = 4.28
Hence, the cost of each bag of apples is 4.28 dollars.
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Complete the sentence.
If a section of a cicle graph needs to represent 15%, then its angle measure will be _____ degrees.
Answer:
54
Step-by-step explanation:
We know that a circle is 360 degrees. Therefore, ↓
360° -----------> 100%
x°-----------> 15%
[tex]x = \frac{15}{100} \times 360 \\ = 54[/tex]
Hope this helps =)
angles A, B, and Y are in quadrants 1, 2, 3 respectively such that:
tan A= 2
tan B= -4/3
cos Y= -1/3
evaluate the following:
1)cos(2B)
2)tan(2A)
3)cos(Y/2)
4)tan(Y/2)
5)sin(B/2)
6)csc(2B)
7)sec(A/2)
Answer:
so the lol is the very nice in the lol morning in the 1098 in 1233 because is use the lol in morning.
The area of the circle
Answer:
314 miles
Step-by-step explanation:
Area of circle: 3.14(r^2)
Now lets solve!
3.14(10^2)
3.14(100)
314
Have an amazing day!!!
Please rate and mark brainliest!!
The area of the circle formula --> [tex]\pi r^2[/tex]
[tex]\pi[/tex] ≈ 3.14r: length of radius --> 10 mi[tex]Area = \pi r^2=\pi (10mi^2) = (100\pi) mi^2= 314 mi^2[/tex]
Hope that helps!
In a school theater performance, 150 tickets were sold, some for $30 and others for $20, how many tickets were sold of each price if the total sale was $3,500?
Answer:
85 tickets for 20 dollars and 60 for 30
Step-by-step explanation:
my smart friend in AP calc said so
the function f(x)=2^x and g(x)=f(x)+k if k=2 what can be concluded about the graph of g(x)?
Please help me solve this problem
Answer:
See belowStep-by-step explanation:
Since all graphs pass throught the origin, they all have the form of:
y = ax², where a- coefficientThe coefficient of each graph's equation can be calculated based on the given pairs of points.
Each of them calculated for you and attached below.
Which diagram is NOT a good model of 3÷1/4?
Answer:
The diagram with three triangles is not a good representation.
The other diagrams have three parts divided into 4 places. The diagram of the triangles only has 3 parts in each of the three triangles. The equation for that would be 3 divided by 1/3.
Step-by-step explanation:
Have a great rest of your day
#TheWizzer
could i have some super quick quick help? graph part isn't necessary
y=4x²-1
#1
y=(2x)²-1²y=(2x+1)(2x-1)#2
Zeros are 1/2,-1/2
#3
Convert to vertex form y=a(x-h)²+k
y=(4x+0)²-1Vertex(h,k)=(0,-1)
#4
Graph attached
Answer:
i) [tex]y=(2x+1)(2x-1)[/tex]
ii) [tex]x=-\dfrac12, x=\dfrac12[/tex]
iii) (0, -1)
iv) see attached
Step-by-step explanation:
Given quadratic: [tex]y=4x^2-1[/tex]
Factored form
We can use the Difference of Two Squares to factor the given quadratic.
[tex]a^2-b^2=(a+b)(a-b)[/tex]
Therefore,
[tex]a^2=4x^2=(2x)^2\implies a=2x[/tex]
[tex]b^2=1=1^2 \implies b=1[/tex]
So the relation in factored form is:
[tex]y=(2x+1)(2x-1)[/tex]
Zeros
The zeros of the quadratic polynomial are the x-coordinates of the points where the graph intersects the x-axis, i.e. when y = 0
[tex]\implies y=0[/tex]
[tex]\implies (2x+1)(2x-1)=0[/tex]
[tex]\implies (2x+1)=0\implies x=-\dfrac12[/tex]
[tex]\implies (2x-1)=0\implies x=\dfrac12[/tex]
Therefore, the zeros are -1/2 and 1/2
Vertex
The x-coordinate of the vertex is the midpoint of the zeros.
[tex]\textsf{midpoint}=\dfrac{-\frac12+\frac12}{2}=0[/tex]
To find the y-coordinate of the vertex, substitute the found value of x into the given equation:
[tex]\implies y=4(0)^2-1=-1[/tex]
Therefore, the vertex is (0, -1)
a
A map is drawn to scale so that a length of 1 centimeter on the map represents an actual distance of 5
kilometers. If two towns are 30 centimeters apart on the map, what is the actual distance between the two
towns?
Answer: 150 kilometers
Step-by-step explanation:
if it's 30 units of 5 kilometers then you multiply it
5x30=150
Simplify the expression. Write the answer using scientific notation.
a) 2.52 × 10–3
b) 2.52 × 10–2
c) 2.52 × 10–1
d) 4.3 × 10–2
Answer:
b) 2.52 x 10^(-2)
Step-by-step explanation:
0.7 X 3.6 = 2.52
2.52 X 10^(-2)
The outer rectangle is 2 feet by 4 feet. There is a semicircle and isosceles triangle within the rectangle. Find the area of the shaded region to the nearest tenth.
To find the shaded area in an image first calculate the total area of the figure and then subtract the white area from this total.
How to find the area of a shaded area?Determine the total area of the figure, in this case, the are of the rectangle that contains the triangle and the semicircle.Calculate the area of the white region.Substract the non-shaded area to the total area.How to find out the area of different shapes?Rectangle: side x side = 2 x 4 = 8 square feetIsosceles triangle = 1/2 base x heightSemicirle = 1/2 (π x r^2)Note: This question is incomplete because the image of the shaded regions is not provided; due to this, the answer is based on general knowledge.
Learn more about triangles in: https://brainly.com/question/2773823
Select all possible values for x in the equation
Answer:
x = ∛375
Step-by-step explanation:
This expression can be written in multiple ways:
x³ = 375
x = ∛375
x = 5∛15
Seems like x = ∛375 is the only correct answer choice.
Hope this helps!
help me please complete the table at the right by writing the fraction of the day each animal sleeps and an equivalent fraction remember there are 24 hours in a day
Answer:
1 day = 24 hours
Divide each of the "number of hours spent sleeping" by the total number of hours in a day (24). Then divide the numerator and denominator by the highes common factor to reduce the fraction to its simplest equivalent.
[tex]\sf Cat=\dfrac{12}{24}=\dfrac{12 \div 12}{24 \div 12}=\dfrac{1}{2}[/tex]
[tex]\sf Cow=\dfrac{4}{24}=\dfrac{4 \div 4}{24 \div 4}=\dfrac{1}{6}[/tex]
[tex]\sf Squirrel=\dfrac{15}{24}=\dfrac{15 \div 3}{24 \div 3}=\dfrac{5}{8}[/tex]
[tex]\sf Tiger=\dfrac{16}{24}=\dfrac{16 \div 8}{24 \div 8}=\dfrac{2}{3}[/tex]
Find the set of values of m for which the line with equation y = mx + 1 and the curve with equation y = 3x^2+ 2x + 4 intersect at two distinct points.
Answer:
Given : line y=mx+4 intersects the curve y=3x2 −4x+7at two distinct points.
To find : set of values of m
Step-by-step explanation:
y = mx + 4
y = 3x² − 4x + 7
Substitute y = mx + 4 to find intersection point
mx + 4 = 3x² − 4x + 7
=> 3x² - x(m + 4) + 3 = 0
(m + 4)² > 4(3)(3)
=> m² + 8m + 16 > 36
=> m² + 8m - 20 > 0
=> (m + 10)(m - 2) > 0
m < - 10 & m > 2
m = (-∞ , - 10) ∪ ( 2 , ∞ )
need help with this question
Jose weighs 12 pounds less than twice what his sister maria weighs. If w respesent maria weight. Which expression shows jose weight
Answer:
2w-12
Step-by-step explanation:
Jose = 2x(Maria's weight) -12
j = 2w -12
Plsss help
Explain how the shapes shown have been sorted.
Answer:
A have no right angles and B had all right angles.
Which of the following techniques will provide the most consistently correct result?
If 12% of a number is 30, find 4% of that number.
Answer:
12 of 40=30 so if you do 4 percent of 40 its 1.4
Step-by-step explanation:
Jessica needs 658 cups of flour for her recipe. The box she has only has 78 cup of flour left in it.
How many more cups of flour does she need?
Enter your answer as a mixed number in simplest form by filling in the boxes.
Answer:
5 3/4 cups.
Step-by-step explanation:
Subtract the two amounts.
6 5/8 - 7/8
Make 6 5/8 an improper fraction by multiplying the 8 and 6 then adding 5.
8 x 6 = 48
48 + 5 = 53
53/8
53/8 - 7/8 = 46/8
Convert back into a mixed number by dividing.
46/8 = 5 6/8
reduce the fraction
5 3/4
if books cost $14.99, and there is 5% sales tax, how much is the sales tax on the books?
Answer:
0.7495 or 0.75 sales tax
Step-by-step explanation:
5% of 14.99 is 0.7495. rounded to the nearest tenth it is 0.75
Pamela made a profit of $3250 after selling stocks for $10500 after 4 years. What was her average annual percentage gain?
Pamela's average annual percentage gain was = 7.7%
Calculation of annual percentage gainThe start up capital (P) = $10500
The simple interest (SI) = $3250
Time (T) = 4 years
Rate = ?
But SI = P × T × R /100
Make R the subject of formula,
R = SI × 100/P × T
R = 3250 × 100/ 10500 × 4
R = 325000/ 42000
R = 7.7%
Therefore, Pamela's average annual percentage gain was = 7.7%
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