All categories

3 years ago

Which expression results from using the Distributive Property to rewrite -9.1 (−4) − 9.1 (12)?

Mathematics

1 answer:

swat323 years ago

6 0

For this case we have that by definition, distributive property is defined as:

$a (b + c) = ab + ac$

We have the following expression:

$-9.1 (-4) -9.1 (12)$

Taking common factor -9.1 we have:

$-9.1 (-4 + 12)$

Thus, the correct option is option B.

Answer:

Option B

$-9.1 (-4 + 12)$

You might be interested in

Colton and his children went into a movie theater and he bought $48.50 worth of bags of popcorn and candies. Each bag of popcorn

Inessa [10]

Answer:

5 bags of popcorn and 6 candies.

Step-by-step explanation:

(5 * $5.50) + ($3.5*6) = $48.5

4 0

3 years ago

A small television cost $120, the sales tax is 6.5%. What is the total cost of 50 the television? * Your answer

Natali5045456 [20]

Answer:

$127.80

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

5 0

3 years ago

Read 2 more answers

73,404+27,865 what does it equal

leonid [27]

It is 101,269 that is the answer for your quistion

7 0

3 years ago

Between which pair of numbers is the exact product of 379 and 8.

navik [9.2K]

The answer is 3032, and if you mean numbers as integers it is between 3031 and 30133.

3 0

3 years ago

Read 2 more answers

Use the information from the polling agency to determine the sample size needed to construct a 95% confidence interval with a ma

Ber [7]

Answer:

the sample size n= 771

sample proportion is p = 1/2

Step-by-step explanation:

Step1:-

marginal error formula is $\frac{2S.D}{\sqrt{n} }$

but if 'n' is sample size then $n = \frac{1}{(margin error)^{2} }$

Given margin error is 36% = 0.036

$n= \frac{1}{(0.036)^2}$

on simplification , we get n= 777 polling agencies

Step 2:-

$Margin of error = \frac{2\sqrt{p(1-p)} }{\sqrt{n} }$

substitute values , we get

$\frac{36}{100} = \frac{2\sqrt{p(1-p)} }{\sqrt{771} }$

after simplification, we get

$\sqrt{p(1-p)} = \frac{1}{2}$

squaring on both sides, we get

$p(1-p) = \frac{1}{4}$

multiply 'p' inside

$p-p^{2} =\frac{1}{4}$

cross multiplication '4' and simplify

$4p^{2} -4p +1 =0$ ........(1)

finding 'p' value

The equation (1) is of the form $(a-b)^{2} = a^{2} -2ab+b^{2}$

$(2p)^{2} -2(2p)(1)+1^{2} = (2p-1)^2$

$(2p-1)^2 =0$

$p=\frac{1}{2}$

conclusion:-

The sample size is 771

the sample proportion is p = $\frac{1}{2}$

4 0

3 years ago