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True [87]
3 years ago
12

Suppose y varies as x. If y= -7 when x = -14, find x when y = 10.

Mathematics
1 answer:
Zina [86]3 years ago
4 0

Answer:

x = 20

Step-by-step explanation:

-7 (2) = -14 so...

10 (2) = 20

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How to find the area
SOVA2 [1]

Answer:A=bh

Step-by-step explanation:A triangle is A=1/2 bh

A recetangle is A=bh

A trapezoid is A=1/2 h(b1+b2)

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3 years ago
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Given the equation 4x + 7 = 3(2x − 5), solve for the variable. Explain each step and justify your process. B. Sam solved a simil
arlik [135]
Equation: 4x + 7 = 3(2x - 5)

Step-by-step solution:

• Expand brackets

-> 4x + 7 = 6x - 15

• Move x variable to a side and the numbers to another

-> 4x - 6x = -15 - 7

• Solve

-> -2x = -22

• Multiply both sides by (-1)

-> -(-2x) = -(-22)
-> 2x = 22

• Divide both sides by 2

-> x = 22/2

-> x = 11

• Justification
-> Put x = 11 in original equation
-> 4(11) + 7 = 3( 2(11) - 5)
-> 44 + 7 = 3(22 - 5)
-> 51 = 3(17)
-> 51 = 51
-> 51 - 51 = 0
-> 0 = 0
Since both sides are equal to each other, the answer to the equation is correct.

I don't know Sam's equation so I'm not gonna answer that.
5 0
3 years ago
What is the value of the expression 24 + 32? (2 points)
Maurinko [17]

Answer:

56

Step-by-step explanation:

Round: 24 is 20 and 34 is 30

20 + 30 = 50

now unrounded, it's easier.

24 + 32 = 56

because 4 + 2 = 6, we know to add on only a few more.

8 0
2 years ago
A rectangular prism has dimensions of 3x, 5x, and 6x. Write an expression for the total volume of the prism.
Evgesh-ka [11]
90because u multiple 3x in 5x equal to 15 then multiple 6x in 15x together equal to 90 prism
3 0
3 years ago
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7 0
3 years ago
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