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Ksivusya [100]
3 years ago
14

Solve for r.

Mathematics
1 answer:
Serhud [2]3 years ago
8 0

If I assume that p is supposed to be r, then:

r = 12.5

or

r = 25/2 is improper or 12 & 1/2 is proper

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Please help me ASAP yall!!!
ASHA 777 [7]

Answer:

60

Step-by-step explanation:

<C+<D = 180 since they form a straight line

5x+20 +3x = 180

8x+20 = 180

Subtract 20 from each side

8x+20-20 = 180-20

8x = 160

Divide by 8

8x/8 = 160/8

x = 20

We want to find angle D

<D = 3x= 3*20 = 60

8 0
3 years ago
Which equation gives the closest estimate of 692 – 343?
Oliga [24]

Answer:

350

Step-by-step explanation:

Nearest hundred: 300

Nearest whole number: 350

Hope this helped!

6 0
3 years ago
Solve system of equations 2x + 2y + 5z = 7 6x + 8y + 5z = 9 2x + 3y + 5z = 6
svet-max [94.6K]

Answer:

the values of x, y and z are x= 2, y =-1 and z=1

Step-by-step explanation:

We need to solve the following system of equations.

We will use elimination method to solve these equations and find the values of x, y and z.

2x + 2y + 5z = 7     eq(1)

6x + 8y + 5z = 9     eq(2)

2x + 3y + 5z = 6     eq(3)

Subtracting eq(1) and eq(3)

2x + 2y + 5z = 7

2x + 3y + 5z = 6

-    -       -        -

_____________

0 -y + 0 = 1

-y = 1

=> y = -1

Subtracting eq(2) and eq(3)

6x + 8y + 5z = 9    

2x + 3y + 5z = 6    

-     -      -          -

______________

4x + 5y +0z = 3    

4x + 5y = 3      eq(4)

Putting value of y = -1 in equation 4

4x + 5y = 3

4x + 5(-1) = 3

4x -5 = 3

4x = 3+5

4x = 8

x= 8/4

x = 2

Putting value of x=2 and y=-1 in eq(1)

2x + 2y + 5z = 7

2(2) + 2(-1) + 5z = 7

4 -2 + 5z = 7

2 + 5z = 7

5z = 7 -2

5z = 5

z = 5/5

z = 1

So, the values of x, y and z are x= 2, y =-1 and z=1

5 0
3 years ago
WILL GIVE BRAINLIST AS SOON AS I CAN i thought that this one was 17157.3 but its not. i feel like im close, though.​
vladimir2022 [97]

Answer:

2143.6 ft³

Step-by-step explanation:

We use formula number 2 to get the volume. V=4\3πr³

4\3 x 3.14 x 8³ = 2143.573333

Rounded of to the nearest tenth = 2143.6 ft³

If you need any clarifications or more explanation pls do mention at the comment section.

Hope this helps and if it does mark as branliest answer thx

4 0
3 years ago
For a and b, write an equation in slope-intercept form that meets the given criteria
MariettaO [177]

Answer:

A) y = -2x

B) y = x - 3

Step-by-step explanation:

A) you need to have a negative 'x' coefficient and no y-intercept

B) you need to have a positive 'x' coefficient and a negative y-intercept

8 0
2 years ago
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