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3 years ago

Heeeelp me Asp need this

Mathematics

1 answer:

gavmur [86]3 years ago

7 0

Answer:

False; True; True

Step-by-step explanation:

If the radius is 4, the area of the circle is

pi*r*r = pi * 4 * 4 = 16pi; The second statement is true.

The entire circle's "angle" is 2pi, so the sector takes (2pi/3) / 2pi of it all, equal to 1/3 of the entire circle - hence the area of the sector is

16pi * 1/3 = 16pi/3; the first statement is false

The length of the entire circle is 2 * pi * r = 2 * pi * 4 = 8pi

The sector is 1/3 of that, so 8pi/3; the third statement is true.

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Shiloh can run 3/4 of a mile in nine minutes. Express her speed as a unit rate, in miles per hour.

elena55 [62]

9/60=.15 of an hour
3/4=.75
.75 divided by .15
=5 miles/hour

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3 years ago

Read 2 more answers

Which of the following represents the most accurate estimation of 38 + 23?

Arte-miy333 [17]

The Correct Answer is

Ex. 38+ 23=30 + 20 +8 +3=50+8+3=58+3=61.

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4 years ago

PLEASE HELP FAST; What is (7 · 5 · 2 / 7 · 3)^2 x (5^0 / 2^-3)^3 x 2^-9?

vredina [299]

Answer:

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Step-by-step explanation:

5 0

3 years ago

Which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x + 6 into the quadratic formula?

ZanzabumX [31]

Answer:

shows correct substitution of the values a, b, and c from the given quadratic equation into quadratic formula.

Step-by-step explanation:

Given: The quadratic equation

We have to show the correct substitution of the values a, b, and c from the given quadratic equation into quadratic formula.

The standard form of quadratic equation is then the solution of quadratic equation using quadratic formula is given as

Consider the given quadratic equation

Comparing with general quadratic equation, we have

a = -3 , b = -2 , c = 6

Substitute in quadratic formula, we get,

Simplify, we have,

Thus, and x_{2}=\frac{2-\sqrt{76} }{-6}

Simplify, we get,

Thus, shows correct substitution of the values a, b, and c from the given quadratic equation into quadratic formula.

3 0

3 years ago

Ben also participated. He fell down midway, and had to walk part of the distance. Still, he finished the distance! It took him e

sammy [17]

Answer:

0.56 m/s

Step-by-step explanation:

The average speed of a body tells how fast is the body moving; it is calculated as:

$v=\frac{d}{t}$

where

d is the distance covered

t is the time elapsed

In this problem, we don't know the distance covered by Ben. Therefore, we will assume that it is 1 km:

d = 1 km = 1000 m

The time elapsed to cover this distance is:

$t=30 min \cdot 60 =1800 s$

Therefore, Ben's average speed is:

$v=\frac{1000}{1800}=0.56 m/s$

3 0

3 years ago