MATHEMATICS COLLEGE

A gumball machine has 300 red gumballs. If the red gumballs are 75% of the total number of gumballs, how many gumballs are in the gumball machine? 225
275
375
400
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Answers

Answer 1
Answer:

Answer:

The answer is 400

Step-by-step explanation:

Percent is to 100 as part is to whole.

In this case we have no whole but we have a part, and we have a percentage. 100% is equal to the whole so, 300 divided by 4 is 75 and what you do on the top is what you do on the bottom; 100x4=400

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Bernie has decided to purchase a new car with a list price of $18,575. Sales tax in Bernie’s state is 7.40%, and he will be responsible for a $795 vehicle registration fee and a $110 documentation fee. Bernie plans to trade in his existing car, a 1999 Buick Riviera in good condition, and finance the rest of the cost for five years at an interest rate of 12.77%, compounded monthly. Assuming that the dealer gives Bernie the listed trade-in price for his car, what will his monthly payment be? Round all dollar values to the nearest cent B. 439.12 is the correct answer.

Answers

18,575 x 7.40% = 1,374.55

18,575 + 1,374.55 = 19,949.55

19,949.55 + 795 + 110 = 20,854.55

20,854.55 divided by 5 = 4,170.91

4,170.91 divided by 12 = 347.58

347.58  x 12.77% = 44.39 

347.58 + 44.39 = 391.97

i am assuming that is the answer but since is see that you have 439.12 as an answer im not so sure 

Answer:

$439.12

Step-by-step explanation:

A waffle recipe uses 3 cups of mix for 4 waffles. How much mix would you need to make 12 waffles

Answers

Since we know that 3 cups make 4 waffles, and we want 12 total waffles, we know that we need to multiply the recipe by 3 in order to have enough ingredients for 12 waffles.

So we multiply 3 cups by 3 (because we need to triple the recipe) and we get:

3*3=9

So we need 9 cups of mix to make 12 waffles.

PLEASE HELP QUICK I NEED IT TO PASS. PLEASE SHOW STEPS, AND DON'T SPAM LINK PLEASE HELP. I NEED SOME HELP

Answers

Answer: 151

Step-by-step

you need to first find the area of each piece of the tent

the 2 rectangular flaps would be 6*8= 48 each

the bottom would be 4*8=32

to find the area of the triangular pieces we need to know the height of each triangle, right now we only know sides. To find the height (the altitude) you draw a line straight down to make a 90 degree angle.

that will also cut your base in half (2 instead of 4) and make 6 your hypotenuse

now use the Pythagorean theorem to find the height of the triangle

a^(2) +b^(2) =c^(2) \n\na^(2) +2^(2) =6^(2) \na^(2) +4=36\na^(2) =32\na=√(32) = 5.66

Area of a triangle is

(1)/(2) bh\n(1)/(2) (4)(5.66)= 11.31

the area of one triangle is 11.31

so together it is 48+48+32+11.31+11.31= 150.6

round up to 151

In a study of factors affecting whether soldiers decide to reenlist, 320 subjects were measured for an index of satisfaction. The sample mean is 28.8 and the sample standard deviation is 7.3. Use the given sample data to construct the 98 percent confidence interval for the population mean.

Answers

Answer:

The 98 percent confidence interval for the population mean is between 27.85 and 29.75 subjects.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = (1-0.98)/(2) = 0.01

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.01 = 0.99, so z = 2.325

Now, find M as such

M = z*(\sigma)/(√(n))

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 2.325(7.3)/(√(320)) = 0.9488

The lower end of the interval is the mean subtracted by M. So it is 28.8 - 0.9488 = 27.85 subjects.

The upper end of the interval is the mean added to M. So it is 28.8 + 0.9488 = 29.75 subjects.

The 98 percent confidence interval for the population mean is between 27.85 and 29.75 subjects.

This is so easy but i can find this in the internet but what i wanna know is what goes in the Missing blank 50 take away ? equals 20

Answers

50 minus 30 is 20.
You could subtract 20 from 50 to see what you would get, and then just plug it in to double check.

URGENT!!!!! 25 POINTS!! Find the perimeter of the triangle with coordinates A(2,7), B(10,5), and C(10,1) Round to the nearest tenth.

Answers

Answer:

Step-by-step explanation:

Hello!

First, calm down. Now, think. Plot those points on a coordinate graph! I don't have coordinate graph at hand right now, but if you plot them, you should get the answer. Remember, if there are diagonal lines, then use the pythagorean theorem!
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