Answer:
A.
Step-by-step explanation:
Edge 2020
Diyva has 70 rocks.she donates half of the rocks to a science center. then she collects 3 rocks on each of her nature hikes
Answer:
What are you asking here? This is more like a statement.
Step-by-step explanation:
Answer:
I'm just going to assume that your trying to figure out how many rocks she has left, in which case the answer would be 38.
Which set of numbers does NOT describe the side
lengths of a right triangle?
a. 3, 4, 5
b. 5, 12, 13
c. 6, 14, 17
d. 7, 24, 25
4
Answer:
The answer is C
Step-by-step explanation:
You have to do the Pythagorean Theorem.
A. you get 25=25
B. you get 169=169
C. you get 232=289
D. you get 625=625
what kinda math is this
please help
This is a true or false question i’m just not smart
Answer:
its true
Step-by-step explanation:
can i get brainliest
what is the slope of the line passing through the points (0,-5) and (4,2)
Answer: 7/4.
Step-by-step explanation: To find the slope of a line, one must use the formula (y2-y1)/(x2-x1). In this case y2 is 2, y1 is -5, x2 is 4, and x1 is 0. We can plug this into the equation to get 7/4.
What is the value for angle 2?
I need help
Answer:
120
Step-by-step explanation:
all complementary angles should add up to 180 degrees
Answer:
the value of 2 is 60
Step-by-step explanation:
WILL GIVE BRAINLIEST
On a field trip, there are 8 adults and 24 students. What is the ratio of students to the total number of people on the field trip?
8 to 24
3 to 4
1 to 4
32 to 24
Answer:
3:4
Step-by-step explanation:
24 students : 32 people total
Divide both sides by 8
Answer: 3 to 4
this is correct, verified it myself B)
Write an equation of the line passing through the point (4, -2) that is parallel to the line - 3x – 4y = 5.
Answer:
Step-by-step explanation:
Let's solve for x.
−3x−4y=5
Step 1: Add 4y to both sides.
−3x−4y+4y=5+4y
−3x=4y+5
Step 2: Divide both sides by -3.
−3x
−3
=
4y+5
−3
x=
−4
3
y+
−5
3
Answer:
x=
−4
3
y+
−5
3
Estimate:
37 is 60% of what number?
22
B
6
60
2,220
Answer:
60
Step-by-step explanation:
It also detects if you are right or wrong
Answer:
50
Step-by-step explanation:
all your doing is dividing 100 by 20 and u get 50
Answer: 15. A. Proportional 16. B. 50 mph
Step-by-step explanation: The price and the number of apples are proportional based on the info you have given us. And B. 50 is correct because 100 miles in 2 hours is 100/2 which equals 50/1 so the unit rate would be B. 50 mph.
I need help with this, Its geometry
Answer:
Step-by-step explanation:
x + 17 + 6x + 10 + 4x - 34 = 180
11x + 27 - 34 = 180
11x - 7 = 180
11x = 187
x = 17
x + 17 = 17 + 17 =34
6(17)+10 = 102 + 10 = 112
4(17) - 34 = 68 - 34 = 34
Answer is D
Solve the problem. Show your work
Answer:
D correct
Step-by-step explanation:
What is the slope of this line?
Enter your answer as a fraction in simplest term in the box.
Answer:
1/4
Step-by-step explanation:
y2-y1/x2-x1
6-5/ 0 - -4.... since it's two subtract signs facing each other you turn it into a +..... 1 /4
Answer:
1/4
Step-by-step explanation:
y2-y1/x2-x1
6-5/ 0 - -4.... since it's two subtract signs facing each other you turn it into a +..... 1 /4
CAN U PLS HELP
Determine the slope of the function as a unit rate for the linear situation.
{(3,-15),(59,-71),(-5,-7),(19,-31)
Answer:
Step-by-step explanation:
Given the algebraic equation of a line, we are able to graph it in a number of ways. In this section, we will be given a geometric description of a line and be asked to find the algebraic equation. Finding the equation of a line can be accomplished in a number of ways, the first of which makes use of slope-intercept form,
y
=
m
x
+
b
. If we know the slope, m, and the y-intercept, (0, b), we can construct the equation.
Example 1: Find the equation of a line with slope
m
=
−
5
8
and y-intercept (0, 1).
Solution: The given y-intercept implies that
b
=
1
. Substitute the slope m and the y-value of the y-intercept b into the equation
y
=
m
x
+
b
.
Answer:
y
=
−
5
8
x
+
1
You are running a fuel economy study. One of the cars You find is blue a can travel 41 1/2 miles on 1 1/4 gallon of gasoline another car is red a can travel 28/45 miles on 4/5 gallon of gasoline what is the unit rate of miles per gallon for each car which car can travel with a greater distance on 1 gallon of gasoline
Answer:
Step-by-step explanation:
hi !
https://brainly.com/question/5121239
check this someone already asked the question
:)
slope of the points (11,-20) and (3,-20)
Answer:
the slope is 0.
Answer:
Slope is zero
Yesterday, the temperature in a city dropped from 9°C to –9°C, as shown below.
The expression 9 + (–18) represents the final temperature. Which of the following is an equivalent way to describe this temperature?
|–18| degrees in a negative direction from 9 degrees
|–18| degrees in a positive direction from 9 degrees
|–9| degrees in a negative direction from 9 degrees
|–9| degrees in a positive direction from 9 degrees
Answer:
I belive the correct answer might be (A)
best estimate for 7/8-6/11
Answer:
WE ARE GONNA DIE
Step-by-step explanation:
BECAUSE BIDEN IS THE PRESIDENT AND DONALD TRUMP IS NOT. >.< I DONT LIKE BIDEN!!!!
please i need this quick , it’s so confusing
can someone help my sister with her module? she in 6th,and i am way to dumb to know how to help her (i gib link)
Answer:
Sure!
Step-by-step explanation:
Thirteen-year old Sammy Thompson bought old skateboards at anction for $350.
He fixed them and sold them for $50 each. WRITE an equation to find how many
skateboards Sammy bought to make a $6200 profit.
Answer:
124
Step-by-step explanation:
calculator blablabla
4 x 7/8 Pls I need help my mom is yelling at me
Answer:
3.5
Step-by-step explanation:
Answer:
7/2 or 3 1/2
Step-by-step explanation:
4 * 7/8 = 4/1 * 7/8 = 28/8 = 7/2 = 3 1/2
In the space below rewrite the subtraction question 2 - 6 = ? as an addition question
Answer:
_+6=2
Step-by-step explanation:
just simple math
Answer:
Either 2+6 or 6+2
Need help with geometry question
Answer:
B. 66
Step-by-step explanation:
idk how to explain it without repeating what it says in the answer
Answer:
The answer is:
B) 66 degrees
Step-by-step explanation:
Since the triangle is an isosceles triangle, angle C is the same as angle B.
57 + 57 = 114
Since you know two of the three angles, and you know that a triangle's angles must equal 180 degrees...
180 - 114 = 66
Angle A must equal 66 degrees for the triangle to equal 180 degrees.
I hoped this helped you! If it did, please consider rating and pressing the 'Thanks' button. Have great day!
Determain the missing value in the table,I’ll give Brainlyest answer,please.
Answer:
15
Step-by-step explanation:
2 * 3 = 6
5 * 3 = 15
7 * 3 = 21
9 * 3 = 27
Find the Slope between two points: (-1,9) and (2, 3)
Answer:
Slope = -2
Step-by-step explanation:
x1 y1 x2 y2
(-1 , 9) (2 , 3)
Slope = y2 - y1
x2 - x1
3 - 9 = -6
2 -(-1) = 3
= -2
The slope between the two points is -2.
What is an equation of a line?The equation of a line is given by:
y = mx + c
where m is the slope of the line and c is the y-intercept.
Example:
The slope of the line y = 2x + 3 is 2.
The slope of a line that passes through (1, 2) and (2, 3) is 1.
We have,
The slope is given as,
m = (d - b) / (c - a)
Where (a, b) and (c, d) are the two points.
Now,
(-1, 9) = (a, b) and (2, 3) = (c, d)
m = (3 - 9) / (2 + 1)
m = -6 / 3
m = -2
Thus,
The slope is -2.
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A rectangular garden has an area of 35 square miles. If its length is 78 miles, what is its width?
Input your answer as a fraction.
Answer:
9/20 mi
Step-by-step explanation:
A= b*hFill in the Values35 = 78 * h
3. divide 35 by 78 = 0.44871794871
4. round that to .45
5. To make a fraction, put it over 100
45/100
7. Simplify fraction
9/20
solve by substitution: y=3x+14 y=-4x
Answer:
X=-2 and y=8. (-2,8)
Step-by-step explanation:
Let's solve your system by substitution.
y
=
3
x
+
14
;
y
=
−
4
x
Step: Solve
y
=
3
x
+
14
for y:
y
=
3
x
+
14
Step: Substitute
3
x
+
14
for
y
in
y
=
−
4
x
:
y
=
−
4
x
3
x
+
14
=
−
4
x
3
x
+
14
+
4
x
=
−
4
x
+
4
x
(Add 4x to both sides)
7
x
+
14
=
0
7
x
+
14
+
−
14
=
0
+
−
14
(Add -14 to both sides)
7
x
=
−
14
7
x
7
=
−
14
7
(Divide both sides by 7)
x
=
−
2
Step: Substitute
−
2
for
x
in
y
=
3
x
+
14
:
y
=
3
x
+
14
y
=
(
3
)
(
−
2
)
+
14
y
=
8
(Simplify both sides of the equation)
Answer:
x
=
−
2
and
y
=
8
If the given equations are y=3x+14 and y= -4x. The value of x and y for the equation will be -2 and 8 respectively.
What is an equation?Equations are statements that affirm the equivalence of two expressions that are joined by the equals symbol "=". An equal sign ("=") links two expressions together to form an equation. The two expressions on each side of the equals sign are referred to as the "left-hand side" and "right-hand side" of the equation.
It is given that the equations are,
y=3x+14 ----------(1)
y= -4x -------------(2)
In order to solve "by substitution," you must first solve one of the equations for one of the variables (you choose which one), plug that solution back into the other equation, "substituting" for the selected variable and then solve for the other.
Substitute the value of y from equation 2 in equation 1 as
y=3x+14
-4x=3x+14
Rearrange the equation in order to find the value of x as
-4x-3x=14
-7x=14
x= -14/7
x= -2
Put the value of x in equation 2 as
y= -4x
y= -4(-2)
y=8
Thus, if the given equations are y=3x+14 and y= -4x. The value of x and y for the equation will be -2 and 8 respectively.
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The rectangle has length 8 cm and area 48 cm2.
The perimeter of the square is the same as the perimeter of the rectangle.
Calculate the area of the square.
Step-by-step explanation:
Given,
length of rectangle(l)= 8cm
area of rectangle(A) = 48cm2
breadth of rectangle(b) = ?
Perimeter of rectangle (P)=?
We know ,
Area of rectangle(A) = l×b
or, 48cm2 = 8cm×b
or, 48cm2 = 8bcm
or, 48cm2/8cm = b
or, 6cm = b
or, b = 6cm
therefore, b = 6cm
Perimeter of rectangle (P) = 2(l+b)
= 2(8cm+6cm)
= 2×14cm
= 28cm
therefore, Perimeter of rectangle(P) = 28cm
Now,
According to the question,
Perimeter of rectangle(P) = Perimeter of square(P)
So,
Perimeter of square(P) = 28cm
length of square(l) = ?
Area of square (A) = ?
We know,
Perimeter of square (P) = 4l
or, 28cm = 4l
or, 28cm/4 = l
or, 7cm = l
or, l = 7cm
therefore, l = 7cm
Now,
Area of square (A) = l^2
= (7cm)^2
= 7cm×7cm
= 49cm^2
therefore, area of square (A)= 49cm^2
The area of the square based on the information is 49cm².
Since the rectangle has length 8 cm and area 48 cm², the width will be:
= 48/8 = 6cm.
Therefore, the perimeter will be:
= 2(l + w)
= 2(8 + 6)
= 28cm
Therefore, the length of the square will be:
= 28/4 = 7
Area of the square will be:
= 7cm × 7cm
= 49cm²
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An economist wants to estimate the mean per capita income (in thousands of dollars) for a major city in Texas. He believes that the mean income is $24.6, and the standard deviation is known to be $7.9. How large of a sample would be required in order to estimate the mean per capita income at the 80% level of confidence with an error of at most $0.56? Round your answer up to the next integer.
Answer:
327
Step-by-step explanation:
Calculation for How large of a sample would be required in order to estimate the mean per capita income
First step is to find z 80% confidence level
At 80% confidence level the z will be:
α/2 = 1 - 80% = 1 - 0.80 = 0.20
α/2= 0.20 / 2 = 0.01
Zα/2= Z0.01= 1.28 from z table
Now let calculate the Sample size using this formula
Sample size = n= [( Zα/2* σ ) / E]^2
Let plug in the formula
n = (1.28*7.9/0.56)^2
n= 326.06
n=327 (Approximately)
Therefore How large of a sample would be required in order to estimate the mean per capita income will be 327