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3 years ago

This polygon is a/an

Mathematics

1 answer:

iren2701 [21]3 years ago

8 0

Answer:

the answer is nonagon

A nonagon is a polygon made up of 9 sides and 9 angles.

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Keisha's boat has a top speed of 9 miles per hour in still water. While traveling on a river at top speed, she went 10 miles ups

neonofarm [45]

If she went 10 miles upstream in the same time as she went 20 miles downstream, that means the downstream speed is twice the upstream speed.

The speed is still water is 9 mph.
The speed of the current is c.
Going downstream, the current adds speed, so the sped downstream is 9 + c.
The speed upstream is 9 - c.
9 + c is twice 9 - c.

9 + c = 2(9 - c)

9 + c = 18 - 2c

3c = 9

c = 3

Answer: The speed of the current is 3 mph.

Check:
9 + c = 12
9 - c = 6
By taking into the account the speed of the current, the downstream speed, 12 mph, is indeed twice the upstream sped, 6 mph.

6 0

3 years ago

I’m confused on this what do I do???

solniwko [45]

Answer:

g(4) = -5, h(8)= 8, f(-2)= -7, g(-2)= 7

Step-by-step explanation:

It's pretty simple. The number in the parenthesis is the value of x.

Therefore, you look at the table, find the required function and the value of x that is given.

The number that is in the answers is the value of y.

5 0

3 years ago

In ΔQRS, the measure of ∠S=90°, RS = 53 feet, and QR = 79 feet. Find the measure of ∠R to the nearest tenth of a degree.

hodyreva [135]

Answer:

47.9

Step-by-step explanation:

6 0

3 years ago

A cylindrical glass has a radius of 4 centimetres and a height of 6 centimetres. A. large cylindrical jar full of water is a sim

Oksanka [162]

Step-by-step explanation:

follow the above attachment.

hope this helps you.

8 0

3 years ago

If 10000 is invested at an interest rate of 10 per year ,compound semiannually,find the value of the investment after the given

slega [8]

Answer:

Part a) $\$17,958.56$

Part b) $\$32,251.00$

Part c) $\$57,918.16$

Step-by-step explanation:

<u><em>The complete question is</em></u>

If $10,000 is invested at an interest rate of 10% per year, compounded semiannually, find the value of the investment after the given number of years. (Round your answers to the nearest cent.)

a)6 years

b)12 years

c)18 years

we know that

The compound interest formula is equal to

$A=P(1+\frac{r}{n})^{nt}$