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3 years ago

-3(x+2)=21 What is the answer and show the work please.

1 answer:

galina1969 [7]3 years ago

7 0

Find use the distributive property and bring down the ending result (21)
-3x-6=21

Next, add 6 on both sides and you should get:
-3x = 27

The last step is, you divide -3 from 27 and you end up with 9. So, the total answer is x = 9

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How to find the circumference of a circle

wlad13 [49]

C = 2pi(r). Find the radius of the circle first. Then multiply that by 2pi.
Pi=3.14159... 2pi = 2 x 3.14159...
Therefore C = 2 x 3.14159... x r

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3 years ago

What is the slope of the line?

Talja [164]

Answer:

$\displaystyle m=1$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (-1, 0)

Point (0, 1)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [SF]: $\displaystyle m=\frac{1-0}{0--1}$
[Fraction] Simplify: $\displaystyle m=\frac{1-0}{0+1}$
[Fraction] Subtract/Add: $\displaystyle m=\frac{1}{1}$
[Fraction] Divide: $\displaystyle m=1$

7 0

2 years ago

What is 12 5/12 - 1 7/12?

pav-90 [236]

I just did it in my calculator and got 10.8333333333

PLEASE RATE THIS QUESTION!

6 0

3 years ago

What is the area of (10 times 8) (2x times 3x)

Phoenix [80]

Answer: 80 and 6x

Step-by-step explanation:

10 x 8 = 80

2x times 3x = 6x

3 0

3 years ago

Bernice estimated that 69% of 242 is 168. Is her estimate reasonable?

ycow [4]

Her estimate is not reasonable.

Since she estimated 69%, you could do either of these options. You could...
A. Divide 242 (or .5) to show how much half off would be, then compare her estimate with half of 242 (121). OR...
B. Simply divide 242 by 69% (.69) and compaor her estimate to the exact amount (166.98).

I hope this helps!

6 0

3 years ago