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4 years ago

How to increase a number by a percentage?

2 answers:

andrey2020 [161]4 years ago

8 0

Number = n
percentage = p, in decimal, e.g. 50% = 0.5, 120% = 1.2

10 increased by 50% = n+n*p
= 10 + (10*.5)
=15

n+ (n*p) = number increased by percentage of that number

Natali [406]4 years ago

6 0

Any number can be increased if the percentage is more than 100%
for instance
120% of 10
120*10/100 =12
here the number 10 is increased to 12

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If 9a+5b+5c=9 what is -10c-18a-10b?

Rus_ich [418]

9a + 5b + 5c = 9

Multiplying the whole equation by -2.

-18a - 10b - 10c = -18.

Hence, the answer is -18.

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3 years ago

Anely and Sandra get paid per project. Anely is paid a project fee of $40 plus $11.50 per hour. Brenda is paid a project fee of

alexdok [17]

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3 years ago

PLEASE HELP IM STUCK ONLY 3 MORE QUESTIJONS

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Answer:

y = - 2x + 8

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = $\frac{1}{2}$ x - 9 ← is in slope- intercept form

with m = $\frac{1}{2}$

given a line with slope m then the slope of a line perpendicular to it is

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2 years ago

Jose asks his friends to guess the higher of two grades he received on his math tests. He gives them two hints. The difference o

AlekseyPX

Answer : 96

x – y = 16 --------> equation 1

$\frac{1}{8} x +\frac{1}{2} y = 52$

x is the higher grade and y is the lower grade

We solve the first equation for y

x - y = 16

-y = 16 -x ( divide each term by -1)

y = -16 + x

Now substitute y in second equation

$\frac{1}{8} x +\frac{1}{2} ( -16 + x ) = 52$

$\frac{1}{8} x - 8 + \frac{1}{2} x = 52$

$\frac{1}{8} x + \frac{1}{2} x - 8 = 52$

Take common denominator to combine fractions

$\frac{1}{8} x + \frac{4}{8} x -8 = 52$

$\frac{5}{8} x - 8 = 52$

Add 8 on both sides

$\frac{5}{8} x = 60$

Multiply both sides by $\frac{8}{5}$

x = 96

We know x is the higher grade

96 is the higher grade of Jose’s two tests.

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3 years ago

Read 2 more answers

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chubhunter [2.5K]

Answer:75%

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