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3 years ago

HELP ME PLEASE IM SO LOST

Mathematics

2 answers:

DiKsa [7]3 years ago

6 0

A=10ft because A is 8ft so round that to the nearest ten your answer is 10ft

ZanzabumX [31]3 years ago

5 0

You are still in the cosine law. All that changes is that 17^2 is put on the left by itself.

a^2 = b^2 + c^2 - 2bc * cos(A) Solve for A

17^2 = 8^2 + 16^2 - 2*8*16* cos(A)

289 = 64 + 256 - 256*cos(A)

289 = 320 - 256*Cos(A)

289 - 320 = - 256*Cos(A)

-31 = - 256 * Cos(A)

-31 / - 256 = cos(A)

0.1211 = cos(A)

cos-1(0.1211) = A

83.05 = A

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Kelly has 4 dimes and some nickels. The value of her coins is 2.25 how many

Semmy [17]

4 dimes=4 *10=40 cents

2.25-0.40=1.85

1.85=0.05 times number of nickles
times 100 both sides
185=5 times number of nickels
divide both sides by 5
37=number of nickles

has 37 nickles

8 0

3 years ago

A scientist is studying the population growth rates of two different species of rats in the same laboratory conditions. The popu

Korolek [52]

Since, population of species A is represented by : $P=2^{x} +19$

Let us find the population of species A, at the end of week 1:

i.e., x = 1

i.e., $P(1)=2^{1} +19$

i.e., $P(1)=2 +19$

i.e., $P(1)=21$

Also, since population of species B is represented by : $P=3^{x} +18$

Let us find the population of species B, at the end of week 1:

i.e., x = 1

i.e., $P(1)=3^{1} +18$

i.e., $P(1)=3 +18$

i.e., $P(1)=21$

Thus, at the end of 1 week, species A and species B will have the same population.

Hence, option D is correct.

4 0

3 years ago

The Wilsons traveled the 2400 miles of Route 66 from Chicago,IL to Santa Monica, CA. If their total driving time was 50 hours, w

Zolol [24]

Answer:

48 miles per hour

Step-by-step explanation:

If they traveled 2400 miles and the total driving time was 50 hours, divide 2400/50 in order to find how many miles they drove per hour.

4 0

2 years ago

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2.3 The diameter of a circle is 8 m long. Calculate its: radius

slavikrds [6]

Answer:

Step-by-step explanation:

Diameter is equal to 2r

so,

8÷2=4

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3 years ago

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What does x equal to

hodyreva [135]

Answer:

i got 16.25=2

Step-by-step explanation:

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3 years ago

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