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3 years ago

Please help me!?!??!?!?!?!?!

Mathematics

2 answers:

o-na [289]3 years ago

3 0

What do you need help with?

BabaBlast [244]3 years ago

3 0

Which part of the question do you need help with.

You might be interested in

Work out the perimeter of this semicircle. take pi to be 3.142

Vanyuwa [196]

Answer:

P = 25.71 cm

Step-by-step explanation:

Perimeter of semicircle = πD/2

Where D=10 cm

P = (3.142)(10)/2

P = (3.142)(5)

P = 15.71 cm

Complete Perimeter of Semicircle = P + Diameter

= 15.71 + 10

= 25.71 cm

8 0

4 years ago

Read 2 more answers

Two containers designed to hold water are side by side, both in the shape of a cylinder. Container A has a radius of 13 feet and

emmasim [6.3K]

Answer:

The percentage ≅ 48.4%

Step-by-step explanation:

* Lets revise how to find the volume of a container shaped cylinder

- The volume of any container = area of its base × its height

- The base of the cylinder is a circle, area circle = 2 π r,

where r is the length of its radius

* In container A:

∵ r = 13 feet , height = 13 feet

∴ Its volume = π (13)² × (13) = 2197π feet³

* In container B:

∵ r = 9 feet , height = 14 feet

∴ Its volume = π (9)² × (14) = 1134π feet³

* So to fill container B from container A, you will take from

container A a volume of 1134π feet³

- The volume of water left in container A = 2197π - 1134π = 1063π feet³

* To find the percentage of the water that is full after pumping

is complete, divide the volume of water left in container A

by the original volume of the container multiplied by 100

∴ The percentage = (1063π/2197π) × 100 = 48.3841 ≅ 48.4%

7 0

4 years ago

The ability to find a job after graduation is very important to GSU students as it is to the students at most colleges and unive

Murrr4er [49]

Answer:

(0.806, 0.839)

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

Suppose we take a poll (random sample) of 3653 students classified as Juniors and find that 3005 of them believe that they will find a job immediately after graduation.

This means that $n = 3653, \pi = \frac{3005}{3653} = 0.823$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.823 - 2.575\sqrt{\frac{0.823*0.177}{3653}} = 0.806$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.823 + 2.575\sqrt{\frac{0.823*0.177}{3653}} = 0.839$

The answer is (0.806, 0.839)

5 0

3 years ago

AABC has the following angle measures: MLA = 120, MLB = 40, and

Y_Kistochka [10]

Answer:

It would be CB, BA, AC

Step-by-step explanation:

6 0

3 years ago

you deposit $2000 in an account earning 6% interest compounded continuously. How much will you have in the account in 15 years?

Zielflug [23.3K]

Answer:

$4793.12

Step-by-step explanation:

The first step in working out the amount after 15 years is to convert the percentage of 6% to a decimal. You can do this by dividing 6 by 100, this gives you 0.06. This is because a percentage is out of 100.

The next step is to add 1 to the value of 0.06, this gives you 1.06. You would add 1 as you are working out a percentage increase.

The final step is to multiply the amount of $2000 by the value of 1.06 to the power of 15, this gives you 4793.12 (rounded to 2 decimal places). This is because we are working out the percentage of $2000 and then adding that on to be recaluclated with the new amount.

1) Divide 6 by 100.

$6/100=0.06$

2) Add 1 to 0.06.

$1+0.06=1.06$

3) Multiply 2000 by 1.06 to the power of 15.

$2000*1.06^{15}=4793.12$

8 0

3 years ago