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2 years ago

Evaluate. -3(-2) (-4)

Mathematics

2 answers:

boyakko [2]2 years ago

8 0

Answer:-24

Step-by-step explanation:

-3(-2) = 6 x (-4) = -24

horrorfan [7]2 years ago

8 0

Answer:

-24

Step-by-step explanation:

Multiplying together this odd number of negative integers results in a negative product: -(6)(4) = -24

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Which number has more than two factors? <br> A. 19<br> B. 23<br> C. 25<br> D. 29

Whitepunk [10]

The answer would be 25 because all of the others are prime numbers, meaning they can only be divided by themselves and 1. So it would be C.

4 0

2 years ago

Assume that trees are subjected to different levels of carbon dioxide atmosphere with 7% of the trees in a minimal growth condit

taurus [48]

Answer: The mean and standard deviation are 567.2 and 89.88 resp.

Step-by-step explanation:

Since we have given that

For 370 parts per million = 7% = 0.07

For 440 parts per million = 10% = 0.10

For 550 parts per million = 49% = 0.49

For 670 parts per million = 34% = 0.34

So, Mean of the carbon dioxide atmosphere for these trees would be

$E[x]=370\times 0.07+440\times 0.1+550\times 0.49+670\times 0.34=567.2$

And

$E[x^2]=370^2\times 0.07+440^2\times 0.1+550^2\times 0.49+670^2\times 0.34=329794$

So, Variance would be

$Var\ x=E[x^2]-E[x]^2=329794-567.2^2=8078.16$

So, the standard deviation would be

$\sigma=\sqrt{8078.16}=89.88$

Hence, the mean and standard deviation are 567.2 and 89.88 resp.

3 0

3 years ago

What number(s) have the absolute value of 7? Why? (Must explain to receive credit)

Liula [17]

Answer:

Why is | 7 | the absolute value of the number 7?

The absolute value of a number is how far away the number is from zero. The absolute value is ALWAYS positive.

What is the absolute value of -7?

The negative version of the number is also | 7 |

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

3. Why does it tako 3 copies of; to show the same amount as 1 copy of ?? Explain your answer in words

Amanda [17]

Because 3/6 is equal to 1/2.
You multiply the 1 (in 1/2) by 3, and the 2 (in 1/2) by 3 to get 3/6. You need to have a common denominator, and 6 was the common denominator.

7 0

2 years ago

You are analyzing the allele frequencies for fur color in a population of squirrels where black fur is dominant to red fur. As p

kvasek [131]

Answer:

0.784

Step-by-step explanation:

Given that you are analyzing the allele frequencies for fur color in a population of squirrels where black fur is dominant to red fur.

As part of your research, you collect the following data:

Total individuals: 1,000

Red fur individuals: 216

So black fur individuals = $1000-216\\=784$

p2 = proportion of black fur individuals to total individuals

= $\frac{784}{1000} \\=0.784$

4 0

3 years ago