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SVEN [57.7K]
3 years ago
9

Simple way to solve this -2(x+3)=8​

Mathematics
2 answers:
Minchanka [31]3 years ago
8 0

Step-by-step explanation:

-2(x + 3) = 8

-2x - 6 = 8

-2x = 8 + 6

-2x = 14

x = -14/2

x = -7

defon3 years ago
4 0
The answer is:

x = -7

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Choose the correct solution and graph for the inequality.
kupik [55]

Answer:

The first one..

Step-by-step explanation:

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3 years ago
An office building has the same number and size of offices on each floor. If there are 21 offices on the first 3 floors, then wh
zhenek [66]

Answer:

70 offices

Step-by-step explanation:

21 ÷ 3 to get amount per floor, 7 per floor, 7 × 10 = 70, 70 offices

6 0
2 years ago
Explain the steps necessary to convert a quadratic function in standard form to vertex form
SIZIF [17.4K]

Answer:

See below.

Step-by-step explanation:

Here's an example to illustrate the method:

f(x) = 3x^2 - 6x + 10

First divide the first 2 terms by the coefficient of x^2 , which is 3:

= 3(x^2 - 2x) + 10

Now  divide the -2 ( in -2x) by 2 and write the x^2 - 2x in the form

(x - b/2)^2 - b/2)^2  (where b = 2) , which will be equal to x^2 - 2x in a different form.

= 3[ (x - 1)^2 - 1^2 ] + 10 (Note: we have to subtract the 1^2 because (x - 1)^2 = x^2 - 2x  + 1^2  and we have to make it equal to x^2 - 2x)

= 3 [(x - 1)^2 -1 ] + 10

= 3(x - 1)^2 - 3 + 10

= <u>3(x - 1)^2 + 7 </u><------- Vertex form.

In general form the vertex form of:

ax^2 + bx + c  = a [(x - b/2a)^2 - (b/2a)^2] + c .

This is not easy to commit to memory so I suggest the best way to do these conversions is to remember the general method.

3 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

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2 years ago
HELP! WILL GIVE BRAINLEST!
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Answer:

A

Step-by-step explanation:

tan theta will equal zero if theta = n × pi where n is an integer

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2 years ago
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