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monitta
3 years ago
11

PLEASE HELP ASAP I WILL MARK BRAINLIEST!!!

Mathematics
1 answer:
Alborosie3 years ago
7 0

Answer:

≈314.16

Step-by-step explanation:

πr^2h /3 you use this formula and put in the values for r and h as 5 and 12 respectively and solve.

Hope this Helps!

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The ratio of red to blue marbles in a bag is 2:5. If there are 65 blue marbles in the bag, how many red marbles are there? Let x
hoa [83]

Answer:

first get the total ratio; 2 + 5 = 7

so the fraction of blue marbles is 5/7

then assume the number of total marbles to be k

then use the expression;

5/7*k = 65

7*5/7 * k = 65*7

5k =455

5/5k = 455/5

k = 91

then calculate the number if red marbles from;

x = 2/7*91

x = 26

Therefore there are 26 red marbles.

8 0
2 years ago
Country Financial, a financial services company, uses surveys of adults age and older to determine if personal financial fitness
lesya692 [45]

Complete question :

Country Financial, a financial services company, uses surveys of adults age 18 and older to determine if personal financial fitness is changing over time (USA Today, April 4, 2012). In February of 2012, a sample of 1000 adults showed 410 indicating that their financial security was more than fair. In February of 2010, a sample of 900 adults showed 315 indicating that their financial security was more than fair. a. State the hypotheses that can be used to test for a significant difference between the population proportions for the two years. H : Pi - P2 - Select your answer HA : P1 P2 - Select your answer - b. What is the sample proportion indicating that their financial security was more than fair in 2012? Round your answer to two decimal places. In 2010?

Answer:

H0 : p1 - p2 = 0

H1 : p1 - p2 ≠ 0

Phat 2010 = 0.35

Phat 2012 = 0.41

Step-by-step explanation:

The null and alternative hypothesis :

H0 : p1 - p2 = 0

H1 : p1 - p2 ≠ 0

The null means there is no difference in proportion for the two years while the alternative claims that there is difference in proportion for the two years.

Sample proportion for 2010:

Phat = x / n

x = 315 ; n = 900

Phat = 315 / 900

Phat = 0.35

Sample proportion for 2012 :

Phat = x / n

x = 410 ; n = 1000

Phat = 410 / 1000

Phat = 0.41

6 0
3 years ago
Chase makes 2 gallons of soup for a dinner party. He serves 15 cups of soup to his guests. How many cups of soup will he have le
Vaselesa [24]
1 gallon is equal to 16 cups. 

Since Chase made 2 gallons of soup, multiply 16 x 2.
Chase made 32 cups of soup.

If he served 15 cups of soup to his guests, he will have 17 cups of soup left over, because 32 - 15 = 17.

3 0
3 years ago
Read 2 more answers
Convert 16 yards to feet. Use 3 feet = 1 yard.
Pavel [41]

Answer:

48

Step-by-step explanation:

16*3=48

8 0
3 years ago
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X+y+z+11=v <br> solve for z
brilliants [131]

Answer:

z=v-x-y-11

Step-by-step explanation:

4 0
3 years ago
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