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2 years ago

Solve for c. –4c − 9 = –3c c =

Mathematics

1 answer:

Rina8888 [55]2 years ago

3 0

Look at the attached picture

Hope it will help you

Good luck on your assignment

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How do to soving problems in math what is a trick

Alex

Answer:

Two-Step Addition

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Subtracting from 1,000

Doubling and Halving

Multiplying by Powers of 2

Multiplying by 9

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Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Also they have positive 1.25

aleksley [76]

-1.25............................

6 0

2 years ago

Each side of a square is x meters long. Each side of the square is increased by 10%.

andrew-mc [135]

X=(44m÷4)÷110×100.......

8 0

3 years ago

How many liters each of a 25% acid solution and a 50% acid solution must be used to produce 80 liters of a 40% acid solution?

alina1380 [7]

Answer:

32 and 48 liters

Step-by-step explanation:

Let 25% solution is x liters, then 50% solution is (80 - x) liters.

Acid content is going to be same:

0.25x + 0.5(80 - x) = 80*0.4
0.25x - 0.5x + 40 = 32
0.25x = 8
x = 8/0.25
x = 32 liters

So 32 liters of 25% solution and 80 - 32 = 48 liters of 50% solution

4 0

2 years ago

By what percent will a fraction increase if its numerator is decreased by 30%

Nadya [2.5K]

Answer:

40%

Step-by-step explanation:

Let x = numerator

Let y = denominator

$\implies \dfrac{x}{y}$

Decreased by 30% = 100% - 30% = 70% = 70/100 = 0.7

Decreased by 50% = 100% - 50% = 50% = 50/100 = 0.5

$\implies \dfrac{0.7x}{0.5y}$

$\implies \dfrac{0.7}{0.5}=1.4$

$\implies 1.4 \ \dfrac{x}{y}$

1.4 as a percentage = 1.4 x 100 = 140%

Therefore, the percentage increase is 140 - 100 = 40%

3 0

2 years ago