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1 year ago

Help! I will give brainliest!!!!

Mathematics

1 answer:

Strike441 [17]1 year ago

4 0

Answer:

3.14 (or pi ) feet

Step-by-step explanation:

Entire circle circumference = pi *d = 8 pi feet

45 degrees is a fraction of the entire 360 degrees of the circle

45 / 360 * 8 pi = pi = 3.14 ft

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A concrete pillar has the shape of a cylinder. It has a radius of 6 meters and a height of 4 meters. If concrete costs $82 per c

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Step-by-step explanation:

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3 years ago

What is the area of rectangle ABCD?

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Multiply the length by the width and your answer will be there.

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2 years ago

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Divide 12x 4 y 4 by 3x 2 y. A. 4x 6y 5 B. 4x 2y 3 C. 9x 6 D. 9x 2y 3

andrew-mc [135]

Answer:

$\frac{12x^4y^4}{3x^2y}=4x^2y^3$

Step-by-step explanation:

Consider an element $a\neq 0$

We know that $\frac{a^m}{a^n}=a^{m-n}$

Here, m and n are exponents and a is a base. Exponent refers to the no. of times a term is multiplied by itself. Another word for exponents is powers.

Other Properties of exponents:

$a^m\times a^n=a^{m+n}\\a^0=1\\\left ( a^m \right )^n=a^{mn}$

Here, we are required to divide $12x^4y^4$ by $3x^2y$ .

Consider $\frac{12x^4y^4}{3x^2y}$

We will solve $\frac{12}{3}\,,\,\frac{x^4}{x^2}\,,\,\frac{y^4}{y}$ separately.

Here,

$\frac{12}{3}=4\\\frac{x^4}{x^2}=x^{4-2}=x^2\\\frac{y^4}{y}=y^3$

So, $\frac{12x^4y^4}{3x^2y}=4x^2y^3$

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2 years ago

The amount (in megawatts) of energy generated in a country from wind power can be modeled by the function W(t)equalsw0(1.90)

Ad libitum [116K]

Answer with Step-by-step explanation:

We are given that

$W(t)=W_0(1.90)^t$

Where t corresponds to the year 2000=0

a. $W(0)=2540MW$

Substitute the values

$2540\times 10^6=W_0(1.90)^0=W_0$

$W_0=2540MW$

b.In 2004

t=4

$W(4)=2540(1.90)^4$

$W(4)=33101.534 MW$

c.In 2013

t=13

$W(13)=2540(1.9)^{13}=10.68\times 10^6MW$

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2 years ago

the graph shows the number of wimbledon championships of several countries. Write the ration that compares the championships won

arlik [135]

Answer:

The ratio that compares the championships won by Australia to the total number won by the United States is equal to $\frac{2}{5}$

Step-by-step explanation:

Observing the graph

we know that

The championships won by Australia are 6

The championships won by the United States are 15

To find out the ratio, divide the championships won by Australia by the total number won by the United States.

$\frac{6}{15}$

Simplify

Divide by 3 boths (numerator and denominator)

$\frac{2}{5}$

Convert to percentage

$\frac{2}{5}=0.40*100=40\%$

that means

For every 2 championships won by Australia the United States won 5

The championships won by Australia are 40% of the championships won by the United States

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2 years ago