Please help with work, thank you in advanced!

John needs 150 feet of rope to section off part of his barn. At a local hardware store he can buy a 30 yard spool for $24 or he

Sphinxa [80]

Answer:

30 yards for 24 vs 1 foot for 25 cents

so lets multiple the yards by 3 to see how many feet

90 feet = 30 yards

90 feet 24 dollars

now lets divide 90 by 24

3.75 so 3.75 per foot

so the second one is way better

Hope This Helps!!!

7 0

2 years ago

Read 2 more answers

Find the area of figure 1. a -12 units2 b- 14 units2 c- 8 units2 d- 10 units2

Brilliant_brown [7]

Answer:

D

Step-by-step explanation:

if you look at the chart. it goes up five and has a width of 2. multiply 5 x 2 = you get 10

3 0

3 years ago

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Chris cut a rope into two pieces. One piece was 11.36 meters long and the other piece was 13.46 meters long. About how long was

rosijanka [135]

If you would like to know about how long was the rope before Chris cut it and you would like to round each length to the nearest tenth to estimate the total length of the original piece of rope, you can calculate this using the following steps:

11.36 meters = 11.4 meters
13.46 meters = 13.5 meters

11.4 + 13.5 = 24.9 meters

Result: The rope was 24.9 meters long (before Chris cut it) - rounded to the nearest tenth.

4 0

4 years ago

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A slide 4.1 meters long makes an angle of 35 with the ground. To the nearest tenth of a meter, how far above the ground is the t

matrenka [14]

Answer:

I think it may be 3.4 I havent done geo since last semester but if I remember correctly you have to do soh cah toa

Step-by-step explanation:

so if my answer is not correct you have to d cos because you have the hypothenuse and are looking for x which is the the opposite so it'll be

cos35= ×

4.1

4 0

4 years ago

NUMBER 28 please:

PtichkaEL [24]

Answer:

a)

The initial amount is 141,200.

The decay factor is 0.89, and the decay rate is of 0.11 = 11%.

b)

The function is $y(t) = 141200(0.89)^t$

The number of bats in 2003 was of 13,729.

Step-by-step explanation:

Exponential decay function:

An exponential decay function has the following format:

$y(t) = y(0)(1-r)^t$

In which y(0) is the initial value, 1 - r is the decay factor and r is the decay rate, as a decimal.

A. Identify the initial amount, the decay factor, and the decay rate

In 1983 there were 141,200 bats living in the caves, which means that the initial amount is 141,200.

That number decreased by about 11% annually until 2003 means that the decay factor is 1 - 0.11 = 0.89 and the decay rate is 0.11 = 11%.

B. Write a function that models and number of that since 1983 then find the number of bats in 2003

With the data found in question A, we have that:

$y(t) = y(0)(1-r)^t$

$y(t) = 141200(1-0.11)^t$

$y(t) = 141200(0.89)^t$

The function is $y(t) = 141200(0.89)^t$

Number in 2003

2003 is 2003 - 1983 = 20 years after 1983, so this is y(20).

$y(20) = 141200(0.89)^{20} = 13729$

The number of bats in 2003 was of 13,729.

7 0

3 years ago