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3 years ago

The ratio of red marbles to blue marbles is 7:4.what is the total no of marbles

Mathematics

1 answer:

7nadin3 [17]3 years ago

5 0

Answer:

<u>its 11</u>

Step-by-step explanation:

$\frac{7}{1} + \frac{4}{1} = \frac{11}{1} \\ = 11$

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Y is between points p and b. pt= 15 and tb = 10. what is pb

Kruka [31]

PT = 15, and TB = 10

Take the 15 from PT, and add the 10 from TB. Which equals 25.

PB = 25

So, 25 is your answer.

Hope this helps! ☺

4 0

3 years ago

A company advertises that its cans of caviar each contain 100 g of their product. A consumer advocacy group doubts this claim, a

Blizzard [7]

Answer:

The value of the test statistic is -3.14.

Step-by-step explanation:

Test statistic:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the expected value, $\sigma$ is the standard deviation and n is the size of the sample.

A company advertises that its cans of caviar each contain 100 g of their product.

This means that $\mu = 100$

They calculate a sample mean weight of 99 g and a sample standard deviation of 0.9 g. Sample of 8 cans.

This means that $X = 99, \sigma = 0.9, n = 8$

So the test statistic will be given by:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{99 - 100}{\frac{0.9}{\sqrt{8}}}$

$t = -3.14$

The value of the test statistic is -3.14.

8 0

3 years ago

Help me with this please

m_a_m_a [10]

36 is the value
answer

4 0

3 years ago

Emily's vacuum cleaner has a power rating of 200 watts. If the vacuum cleaner does 360,00 joules of work, how long did Emily spe

MArishka [77]

1,800 hrs? im not sure tbh

8 0

3 years ago

A 6-pound bag of chocolate candies costs $14.04. What is the unit price?

Ber [7]

Answer:

2.34 per pound is unit price

Step-by-step explanation:

14.04 divided by 6 is 2.34

3 0

3 years ago