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dem82 [27]
4 years ago
10

Find the difference 15 - (-15)

Mathematics
1 answer:
Yuki888 [10]4 years ago
8 0

Answer:

30

Step-by-step explanation:

Note that, when two negative signs are directly next to each other, they mean addition. Note the rule:

A positive sign & A positive sign = Positive number.

A positive sign & A negative sign = Negative number.

A negative sign & A negative sign = Positive number.

In this case:

- (-15) = + 15

Simplify. Combine like terms:

15 + 15 = 30

30 is your answer.

~

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Find f(2) given f(x) = 3x^2 + 2x + 16​
horrorfan [7]

Answer:

f(2) = 32

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 3x² + 2x + 16

f(2) is x = 2

<u>Step 2: Evaluate</u>

  1. Substitute:                    f(2) = 3(2)² + 2(2) + 16
  2. Evaluate:                       f(2) = 3(4) + 2(2) + 16
  3. Multiply:                        f(2) = 12 + 4 + 16
  4. Add:                              f(2) = 32

And we have our answer!

3 0
3 years ago
Mrs.Aguilar is going to use 6 1/3 yards to make 2 gowns. The larger gown requires 3 2/3 yards of material. How much material wil
lakkis [162]
6 1/3- 3 2/3= 2 2/3 LEFT OVER
6 0
3 years ago
If g(x) is the inverse of f(x) and f(x) = 4x+12, what is g(x)?
prohojiy [21]

Answer:

D

Step-by-step explanation:

y=4x+12

x=4y+12

x-12=4y

1/4x-3

4 0
3 years ago
Which equation can be used to find 75 percent of 200?
Debora [2.8K]
The answer is x= 75*2
x= 3/4*200
and the equations are x= 75/100 *200
= 75*2
or 3/4 * 200
7 0
3 years ago
Read 2 more answers
What is the measure of angle AOD? The picture is attached below. Please help!!
Flura [38]

Answer:

51°

Step-by-step explanation:

Note that the square in the angle place = 90°.

Also note, that a complete circle is 360°.

Set the equation. Let the ? be denoted by the variable x:

x + 90+ 124 + 95 = 360

Simplify. Combine like terms:

x + (90 + 124 + 95) = 360

x + (309) = 360

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Subtract 309 from both sides of the equation:

x + 309 (-309) = 360 (-309)

x = 360 - 309

x = 51

51° is your answer.

~

7 0
2 years ago
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