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tankabanditka [31]
3 years ago
9

What is the value of -2(x+5)

Mathematics
1 answer:
Alex787 [66]3 years ago
5 0
Steps:
1. Multiply the -2 by x which equals -2x
2. Multiply -2 by 5 which equals -10
3. Your answer is -2x + -10
You might be interested in
How to calculate standard deviation given mean and sample size?
ad-work [718]
In addition to mean and sample size you will need the individual scores.

The formula for standard deviation is:

S^2 = E(X-M)^2/N-1

Here's an example: 
Data set: 4,4,3,1
Mean: 3
Sample size: 4

First, put the individual scores one after the other and subtract the mean from it.
4 - 3 = 1
4 - 3 = 1
3 - 3 = 0
1 - 3 = -2

Second, square the answers you got from step 1. 
1^2 = 1
1^2 = 1
0^2 = 0
-2^2 = 4
Third, plug the values from step 2 into the formula. 

S^2 = (1+1+0+4)/(4-1) = 6/3 = 2

Standard deviation = 2
3 0
3 years ago
Which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x + 6 into the quadratic formula?
lbvjy [14]

Answer:

x = StartFraction negative

(negative 2) plus or minus StartRoot (negative 2) squared minus 4 (negative 3)(6) EndRoot Over 2(negative 3) EndFraction

Step-by-step explanation:

0 = – 3x2 – 2x + 6

It can still be written as

– 3x2 – 2x + 6 =0

Quadratic formula=

-b+or-√b^2-4ac/2a

Where

a=-3

b=-2

c=6

x= -(-2)+ or-√(-2)^2-4(-3)(6)/2(-3)

x = StartFraction negative

(negative 2) plus or minus StartRoot (negative 2) squared minus 4 (negative 3)(6) EndRoot Over 2(negative 3) EndFraction

8 0
3 years ago
Please help meASAP<br><br> And show any work possible.
lubasha [3.4K]

Answer:

A is the answer you have to multiply them by 8 and you get a as an answer.....

Love you!!!!!!.

Step-by-step explanation:

7 0
3 years ago
The difference between x and half of y
Nataliya [291]
You could do y÷2-x to get x - half of y
7 0
3 years ago
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Merlin worked these hours during the week: 4.5, 8.75, 9.5, 10, and 4.25 hours. What was his gross pay for the week, if he makes
mart [117]
The answer is $361.86
7 0
3 years ago
Read 2 more answers
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