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3 years ago

70% of What number 56

1 answer:

3 0

$70\% \ of \ x =56 \\ \\ \frac{70}{100} \cdot x = 56 \\\\ \frac{7}{10} \cdot x=56 \\ \\ x=56 : \frac{7}{10} \\ \\ x=56 \cdot \frac{10}{7} \\ \\ x= \frac{560}{7} =80$

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Pick the expression that matches this description:

elena55 [62]

Answer:

Choice C.

Step-by-step explanation:

3rd degree means that the expression must have power of 3 as the highest power.

So, choice b is wrong since it has highest power of 8. All the other choices have highest power of 3.

Binomial means expression that has two terms.

So, choices d and a are wrong because they have 3 terms each.

So, choice C is correct answer and also it has constant as 8.

8 0

3 years ago

Each exterior angle of a regular polygon is 10°. How many sides does it have?

jeka94

Answer:

if exterior angle is 10 degrees, then interior angle is 180 -10 = 170 deg.

Each trinaglke inside the polygon will be isosceles with two angles of 170/2 - 85 degrees each.

So, angle at centre = 180 -170 = 10 deg.

Ttal angle at centre = 360 deg.

No of sides = 360 /10 = 36 sided polygon.

b) Sum of interior angles is given by (2N-4) Right angles

So: 9900 = (2N-4)x90 = 180N - 360

180N = 9900 +360 = 10260

N = number of sides = 10260 / 180 = 57 sides

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3 years ago

What is the volume of the box

Fofino [41]

Answer:

3/32 in^3

Step-by-step explanation:

volume = length * width * height

V=3/4 * 1/2 * 1/4

V= 3/32

3 0

3 years ago

Read 2 more answers

This graph represents 2x+y=−4.

Tema [17]

Answer:

(-2, -2)

Step-by-step explanation:

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3 years ago

Ik this is rlly easy im just to lazy to do it

True [87]

The answer 12/72 because you multiply

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3 years ago