All categories

3 years ago

Which answer choice represents an equivalent number sentence that uses the associative property to rewrite "[(-4) + (-3)] +-5"?

Mathematics

2 answers:

aleksandr82 [10.1K]3 years ago

7 0

Answer:

-12

Step-by-step explanation:

AVprozaik [17]3 years ago

5 0

Answer:

Your answer: B & A

If you had to choose one I would say please put A

Step-by-step explanation:

Hope this helped : )

You might be interested in

Marcia began finding the volume of the box. Her work is shown below. B = 5 (4) = 20 inches squared A prism has length of 5 inche

inysia [295]

Answer:

140 in^3

Step-by-step explanation:

The volume formula can be written as ...

A = Bh

Marcia found B = 20 in^2, so we can use that in the formula, along with h = 7 in.

A = (20 in^2)(7 in)

A = 140 in^3

The volume of the box is 140 cubic inches.

7 0

3 years ago

Read 2 more answers

Convert a half to decimal

Ksivusya [100]

The answer would be is 0.5

7 0

3 years ago

Read 2 more answers

A private music lesson at parker music cost $40 for 1 hour. A private music lesson at joelle music cost $25 for 30 minutes. How

aksik [14]

Answer:

10$

Step-by-step explanation:

25 x (60/30) = 50, and 50 is 10 greater than 40

3 0

3 years ago

Read 2 more answers

A plumber charges $45 for a service call to come to your house and $18 an hour while he is working. Write a function that shows

Brilliant_brown [7]

Answer:

This relationship can be represented by a linear equation

$y=18x+45$

Step-by-step explanation:

$y=18x+45$

Where x is time in hours

6 0

3 years ago

Last year, 50% of MNM, Inc. employees were female. It is believed that there has been a reduction in the percentage of females i

anygoal [31]

Answer:

We conclude that there has been a decrease in the percentage of females in the company from last year.

Step-by-step explanation:

We are given that Last year, 50% of MNM, Inc. employees were female. It is believed that there has been a reduction in the percentage of females in the company.

This year, in a random sample of 400 employees, 180 were female.

Let p = percentage of females in the company this year.

So, Null Hypothesis, $H_0$ : p $\geq$ 50% {means that there has not been a decrease in the percentage of females in the company from last year}

Alternate Hypothesis, $H_A$ : p < 50% {means that there has been a decrease in the percentage of females in the company from last year}

The test statistics that will be used here is One-sample z proportion statistics;

T.S. = $\frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }$ ~ N(0,1)

where, $\hat p$ = proportion of female in a sample of 400 employees = $\frac{180}{400}$ = 0.45

n = sample of employees = 400

So, test statistics = $\frac{0.45-0.50}{{\sqrt{\frac{0.45(1-0.45)}{400} } } } }$

= -2.0101

The value of the test statistics is -2.0101.

Now at 5% significance level, the z table gives critical value of -1.6449 for left-tailed test. Since our test statistics is less than the critical value of z as -2.0101 < -1.6449, so we have sufficient evidence to reject our null hypothesis as it will fall in the rejection region due to which we reject our null hypothesis.

Therefore, we conclude that there has been a decrease in the percentage of females in the company from last year.

4 0

3 years ago