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3 years ago

SUN 40

Mathematics

1 answer:

muminat3 years ago

8 0

Answer:

I think it's the distance' an athlete reaches during practice'

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The distance around a circular park is 88 yards. What is the area of the park?

Eddi Din [679]

C = 3.14 x 2r

88 = 3.14 x 2r

28 = 2r

14 = r

A = 3.14 x r^2

A = 3.14 x 14^2

A = 615

8 0

3 years ago

Read 2 more answers

A screening test for a newly discovered disease was evaluated in order to determine how well the test performs. Investigators ad

saw5 [17]

Answer:

B. 71.43%

Step-by-step explanation:

The sensitivity is the probability that a test will indicate 'disease' among those with the disease, that is, the test has a positive results:

In this problem, we have that:

150 people with the disease tested positive and 60 tested negative. So the sensitivity is:

$S = 100*\frac{150}{210} = 71.43$

The correct answer is:

B. 71.43%

5 0

3 years ago

Please help me :)) algebra 2! what are the real roots?

irina1246 [14]

Answer:

Step-by-step explanation:

So we have the equation:

$3(x-4)^\frac{4}{3}+16=64$

First, let's subtract 16 from both sides:

$3(x-4)^\frac{4}{3}=48$

Now, let's divide both sides by 3:

$(x-4)^\frac{4}{3}=16$

Remember that with fractional exponents, we can move the denominator into the root position. Therefore:

$(\sqrt[3]{x-4})^4=16$

Let's take the fourth root of both sides. Since we're taking an even root, make sure to have the plus-minus symbol!

$\sqrt[3]{x-4} =\pm 2$

Cube both sides. Since we're cubing, the plus-minus stays.

$x-4=\pm 8$

Add 4 to both sides.

$x=\pm 8+4$

Calculator:

$x=8+4\text{ or } x=-8+4\\x=12\text{ or } x=-4$

So, our answer is A.

And we're done!

7 0

4 years ago

P=2a+2b solve for a

kari74 [83]

Answer:

a=(p-2b)/2

Step-by-step explanation:

a=(p-2b)/2

4 0

4 years ago

Reread 1-3. In Whitman’s metaphor, what is the “fearful trip”, the “ship”, and the “prize” that was won? What is the “port?” Exp

djverab [1.8K]

The Captain. Whitman is mourning the death of Lincoln whom he (Whitman) considered the most moral of men. Whitman genuinely appreciated who Lincoln was and what he was forced to do as president. Lincoln is the Captain.

The Ship. The ship is what is left of the United States after the Civil War. It was a bloody confrontation and America is left momentarily poorer after the war was over.

The Prize was the "peaceful" reunification of the United States.

The Port was the end of the ship's journey. It is made up of people glad to see the ship returning

5 0

3 years ago