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3 years ago

What is the probability that she gets exactly 4 or exactly 5 questions right?

1 answer:

7 0

Probability that the questions are answered corectly1/4 = 0.25
probability that they are answered wrong 3/4 = 0.75
probability that 4 out of 7 are corect 7C4(0.25)4(0.75)3 which equals 0.0577

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A baker uses 13 1/2 cups of flour to make bread. She uses 2 1/4 cups of flour to make each loaf. The baker sells 2/3 of the loav

ollegr [7]

Answer:

She sells 4 loaves of bread

Step-by-step explanation:

Lets explain how to solve the problem

→ A baker uses $13\frac{1}{2}$ cups of flour to make bread

→ She uses $2\frac{1}{4}$ cups of flour to make each loaf

From these information we can find the number of loaves of bread

she can make

∵ There are $13\frac{1}{2}$ cups of flour

∵ Each loaf of bread needs $2\frac{1}{4}$ cups of flour

∴ The number of loaves = $13\frac{1}{2}$ ÷ $2\frac{1}{4}$

To divide two mixed numbers make them improper fractions and

change the division sign to multiplication sign and reciprocal the

fraction after the division sign

∵ $13\frac{1}{2}$ = $\frac{(13)(2)+1}{2}$

∴ $13\frac{1}{2}$ = $\frac{27}{2}$

∵ $2\frac{1}{4}$ = $\frac{(2)(4)+1}{4}$

∴ $2\frac{1}{4}$ = $\frac{9}{4}$

∴ The number of loaves = $\frac{27}{2}$ × $\frac{4}{9}$

∴ The number of loaves = 6

<em>She can make 6 loaves</em>

→ The baker sells $\frac{2}{3}$ of the loaves of bread that she makes

→ We need to find the number of loves of bread she sells

∵ She sells $\frac{2}{3}$ of the loaves

∵ There are 6 loves

∴ The number of loaves she sells = 6 × $\frac{2}{3}$ = 4

<em>She sells 4 loaves of bread</em>

7 0

3 years ago

Marisol buys 3 pounds of cheese and 3 pounds of sausage for a total cost of $36. The sausage costs $2.00 less per pound than the

mamaluj [8]

Answer:

$33

Step-by-step explanation:

c = price of cheese; s = price of sausage

3c + 3s = $36

s = c - 2

3c + 3(c - 2) = 36

2c - 2 = 12

c = $ 7

s = 7 - 2 = $ 5

Therefore, price of 4 lb of cheese and 1 lb of sausage is 4c + 1s = $28 + $5 = $33

8 0

3 years ago

Hi what’s 7 times 8 again?

QveST [7]

Answer:

the ansnwer is 56

mark as brainlest please!!

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

At the end of an accounting period a company total assets equaled $535,000 and liabilities equaled $210,000 how much was the com

KiRa [710]

The answer to this question is $325,000

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2 years ago

Write 2.97 as a fraction, decimal and percent

trapecia [35]

$\boxed{2.97=\frac{297}{100}=297\%}$

7 0

4 years ago