3 years ago

72 is equal to 80% of a number n. Write and solve and equation to find n. Write the percent as a decimal.

Mathematics

1 answer:

Deffense [45]3 years ago

4 0

I'm pretty sure the answer is 90 = n decimal 0.8

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Find the percent increase. Round to the nearest percent. From 85 books to 143 books The percent increase is

klasskru [66]

We are given :

Initial = 86
Final = 143

Let's find the percent increase with the help of formula:

$\boxed{ \sf \: formula : 100 \times \frac{(final - initial)}{initial} }$

$\red{ \rule{35pt}{2pt}} \orange{ \rule{35pt}{2pt}} \color{yellow}{ \rule{35pt} {2pt}} \green{ \rule{35pt} {2pt}} \blue{ \rule{35pt} {2pt}} \purple{ \rule{35pt} {2pt}}$

$\tt \% \: increase = 100 \times \frac{(143 - 85)}{85}$

$\tt \% \: increase = 100 \times \frac{58}{85}$

$\tt\% \: increase = 20 \times \frac{58}{17}$

$\tt\% \: increase = \frac{1160}{17}$

$\tt\% \:increase = 6823.53$

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2 years ago

Solve for x -x=-5 How do you solve for x? can it remain negative ?

Svet_ta [14]

Solve for x
-x=-5

multiply both sides by (-1)
-x (-1) =-5 (-1)
simplify
x = 5

answer is 5 (positive 5)

4 0

3 years ago

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Plzzzzzzzz help me worth 20 points what is: - 5 1/4- [-7 1/2] =

Alexandra [31]

Answer:

2 1/4

Step-by-step explanation:

- 5 1/4- [-7 1/2]

Get a common denominator of 4

- 5 1/4- [-7 1/2*2/2]

- 5 1/4- [-7 2/4]

We know subtracting a negative is adding

- 5 1/4 + [7 2/4]

Rewriting

7 2/4 - 5 1/4

Subtract the whole numbers

7-5 =2

Subtract the fractions

2/4 -1/4 = 1/4

2 1/4

5 0

3 years ago

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larisa86 [58]

Answer:

30x+100 > 50x+25

Gymania has the better deal

Step-by-step explanation:

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2 years ago

Which is one of the transformations applied to the graph of f(x) = x2 to change it into the graph of g(x) = 9x2 – 36x?

sergejj [24]

Answer:

It's C

Step-by-step explanation:

I just took it lol

3 0

3 years ago

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