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3 years ago

7x + 4y = 5 7x + 4y = 12

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

5 0

Answer:

No answer

Step-by-step explanation:

Let's say I would like to eliminate x in order to find the value of y.So I multiply the second equation by (-1), but than I also eliminate y. Therefore, this system of equations doesn't have a solution.

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Solve for x:<br> 9x – 7 = 5x + 21

denis23 [38]

Answer:

x=7

Step-by-step explanation:

add 7 to both sides

9x=5x+28

subtract 5x from both sides

4x=28

divide both sides by 4

x=7

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2 years ago

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Brad buys two packages of mushrooms which mushrooms cost less per pound, $11.25 for 2/3 pounds and $7.99 for 1/2 pounds. Pls hel

Vsevolod [243]

Answer:

$7.99 for 1/2 pounds cost less per pound

Step-by-step explanation:

we know that

The unit rate is equal to divide the total cost by the total weight

step 1

Find out the unit rate of the first package

$11.25 for 2/3 pounds

The unit rate is

$11.25:\frac{2}{3}=\frac{33.75}{2}=\$16.875\ per\ pound$

step 2

Find out the unit rate of the first package

$7.99 for 1/2 pounds

The unit rate is

$7.99:\frac{1}{2}=\frac{15.98}{1}=\$15.98\ per\ pound$

therefore

The second package cost less per pound

6 0

3 years ago

Hi I need help with this problem. can anyone you tell me what 5+(-3)

Tomtit [17]

The answer for 5+(-3) is 2

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2 years ago

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Problem Solving with Circles

Lera25 [3.4K]

Answer:

A) false statement: B

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B) false statement: A

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3 0

3 years ago

Sara has 4 yellow beads and 3 green beads.how many beads does sara have

Neko [114]

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3 years ago