Please help, algebra two problem

Cammie can mow 1/2 acre in 25 minutes. If her rate is constant, Cammie says she can mow 1 1/4 acres in one hour. Is Cammie corre

wlad13 [49]

Answer: No, Cammie is not correct. She can mow $1\frac{1}{5}\ acres$ in one hour (See explanation).

Step-by-step explanation:

Convert the mixed number to an impoper fraction:

1. Multiply the whole number part by the denominator of the fraction and add the product to the numerator.

2. The denominator does not change.

Then:

$1\frac{1}{4}=\frac{(1*4)+1}{4}=\frac{5}{4}$

Let be "x" the acres Cammie can mow in one hour.

You know that she can mow $\frac{1}{2}\ acre$ in 25 minutes, then you can set up the following proportion (Remember that 1 hour has 60 minutes):

$\frac{\frac{1}{2}}{25}=\frac{x}{60}$

Solving for "x", you get:

$\frac{\frac{1}{2}}{25}=\frac{x}{60}\\\\(60)(\frac{1}{50})=x\\\\x=\frac{6}{5}$

Convert from improper fraction to mixed number:

1. When you divide 6 by 5, the quotient is 1. This will be the whole number part.

2. The remainder is 1. This will be the numerator.

3. The denominator does not change.

Then:

$x=1\frac{1}{5}$

Therefore, she can mow $1\frac{1}{5}\ acres$ in one hour.

5 0

3 years ago

At a pet store, the ratio of female birds to male birds was 5:3.

slamgirl [31]

Answer:

For every 5 female birds in the pet store, there are 3 male birds.

Step-by-step explanation:

Ratios are used to represent a proportion. In this case, we are comparing female and male birds. So, since female is 5 and male is 3, the ratio is 5:3

3 0

3 years ago

10>29-3b Please help and explain your answer I will mark Brainlyest

Marta_Voda [28]

Step 1 , switch sides - 29-3b<10
step 2 , subtract 29 from both sides - -3b< -19
step 3 , multiply both sides by -1 - 3b > 19
step 4 (answer) - divide by 3 = 19/3

7 0

3 years ago

a hospital spokesperson states that 2% of emergency rooms visits by college undergraduates are for alcohol related health proble

Mazyrski [523]

Answer:

Type I error: Reject H₀: p = 0.02 when in fact p = 0.02.

Type II error: Fail to Reject H₀: p = 0.02 when in fact p ≠ 0.02.

Step-by-step explanation:

The complete question is:

Write a sentence describing the type I and type II errors for the hypothesis test for the indicated claim.

"A hospital spokesperson states that 2% of emergency rooms visits by college undergraduates are for alcohol related health problems."

Solution:

A type I error occurs when we discard a true null hypothesis (H₀) and a type II error is made when we fail to discard a false null hypothesis (H₀).

The claim made by the hospital spokesperson is, 2% of emergency rooms visits by college undergraduates are for alcohol related health problems.

The hypothesis can be defined as:

H₀: The proportion of emergency rooms visits by college undergraduates for alcohol related health problems is 2%, i.e. p = 0.02.

Hₐ: The proportion of emergency rooms visits by college undergraduates for alcohol related health problems is not 2%, i.e. p ≠ 0.02.

A type I error will be committed when we conclude that the null hypothesis can be rejected, i.e. proportion of emergency rooms visits by college undergraduates for alcohol related health problems is not 2%, when in fact we are rejecting a true null hypothesis, i.e. the proportion is 2%.

A type II error will be committed when we conclude that the null hypothesis cannot be rejected, i.e. proportion of emergency rooms visits by college undergraduates for alcohol related health problems is 2%, when in fact we are failing to reject a true null hypothesis, i.e. the proportion is not 2%.

8 0

3 years ago

Which is the correct label of the parallel lines?(4 points)

otez555 [7]

Answer:

1

Step-by-step explanation:

a//b is the correct answer plz add this as brainliest

8 0

3 years ago

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