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3 years ago

What is 80% of 960? Round to the nearest hundredth (if necessary).

Mathematics

2 answers:

Tatiana [17]3 years ago

8 0

Answer:

Step-by-step explanation:

you could do (960/100)*80=768

Kitty [74]3 years ago

8 0

Answer:

768

Step-by-step explanation:

When you have problems like these which is very common, you first change the percentage to a decimal.

80% is the same as 0.80 or 0.8.

Next, you multiply.

0.8 x 960

Your result is your answer.

0.8 x 960 = 768

<em>Also helpful tip; if the problem says something like adding 80% of 960 to itself, then you would add 768 to 960.</em>

Hope it helps!

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If an exterior angle of a regular polygon is 21.2Â°, how many sides does the polygon have?

sesenic [268]

360 divided by x = 21.2 recurring
So rearrange that to get x = 360 divided by 21.2
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3 years ago

Find the value of y so that the points (-5,10) and (3,y) lie on a line with slope -3/8.

shtirl [24]

Answer:

y = 7

Step-by-step explanation:

calculate the slope m using the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 5, 10) and (x₂, y₂ ) = (3, y)

m = $\frac{y-10}{3+5}$ = $\frac{y-10}{8}$

For this to equal - $\frac{3}{8}$

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3 years ago

You have some quarters $0.25 and dimes $0.10 There is a total of 32 coins . You turn them in to the bank and it is worth $5.00.

IgorC [24]

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2 years ago

T varies inversely with the cube of W. When W is 3, T is 1/9. Find the value of W when T is 1/243

Lera25 [3.4K]

T varies inversely with the cube of W

$T = k/W^3$

$\frac{1}{9} = k/3^3$

$k = \dfrac{3^3}{9} = 3$

$W^3 = k/T$

$W = \sqrt[3]{ k/T }$

When $T=1/243$

$W = \sqrt[3]{ 3/(1/243)}= \sqrt[3]{729} = 9$

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3 years ago

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Lapatulllka [165]

Answer:

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Step-by-step explanation:

A=bxh

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