3 years ago

I need help with the question

Mathematics

1 answer:

zheka24 [161]3 years ago

3 0

Answer:

A= $2.15 b=$1.70

Step-by-step explanation:

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Simplify the following expression by combining like terms.<br> 3x + 4x² - 7x+ 9x2

EleoNora [17]

Answer:

13x² - 4x

Step-by-step explanation:

3x + 4x² - 7x + 9x² ← collect like terms

= (4x² + 9x² ) + (3x - 7x)

= 13x² + (- 4x)

= 13x² - 4x

7 0

2 years ago

Suppose j varies jointly with g and v, and j=2 when g=4 and v=3. <br> Find j when g=8 and v=9.

vladimir2022 [97]

Answer:

$j=12$

Step-by-step explanation:

we know that

In a join variation, If j varies jointly with respect to g and v, the equation will be of the form $j = kgv$

where k is a constant

step 1

Find the value of k

we have

j=2,g=4,v=3

substitute and solve for k

$2 = k(4)(3)$

$2 = 12k$

$k=\frac{1}{6}$

The equation is equal to

$j=\frac{1}{6}gv$

step 2

Find the value of j when g=8,v=9

substitute the values in the equation and solve for j

$j=\frac{1}{6}(8)(9)$

$j=12$

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2 years ago

1. A linear pair is two adjacent angles that are supplementary and form a straight line.

Stels [109]

The correct awnser is true

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Samir bought 3 pounds of cement to repair the cracks in his sidewalk.Each crack needs to be filled with 2 ounces of cement. Will

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Answer: He will divide to convert pounds to ounces.

Step-by-step explanation:

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3 years ago

3) 0.07 x 16<br> Help now

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Answer:

1.12

Step-by-step explanation:

all you have to do is multiply them, hope i helped

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