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ankoles [38]
3 years ago
12

HELP ME OUTTTT PLEASEEEEEE

Mathematics
1 answer:
Alex3 years ago
7 0

Answer:

3

Step-by-step explanation:  

hope this helps

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Which expression is equivalent to 1/3(12x+6x-21)
marin [14]

Answer:

6x-7

Step-by-step explanation:

\frac{1}{3} (12x + 6x -21)

break it into pieces

\frac{1}{3}*12x = 4x

\frac{1}{3}*6x=2x

\frac{1}{3} *-21=-7

put it all together

*since there's no negative in front  of the other numbers except 7 they're positive so you add them*

4x + 2x - 7

simplify

6x - 7

4 0
3 years ago
(x²+10x+7)(2x-1) = 2x³+19x²+4x-7 show the steps
sasho [114]
Answer: See below

Explanation:
(x^2+10x+7)(2x-1) = 2x^3+19x^2+4x-7
2x^3-x^2+20x^2-10x+14x-7 = 2x^3+19x^2+4x-7

2x^3+19x^2+4x-7 = 2x^3+19x^2+4x-7

6 0
3 years ago
Express cos I as a fraction in simplest terms.​
Serga [27]

Answer:

Solution given

Cos I=adjacent/hypotenuse=16/34

<u>8</u><u>/</u><u>1</u><u>7</u><u> </u><u>is</u><u> </u><u>a</u><u> </u><u>required</u><u> </u><u>answer</u><u>.</u>

4 0
3 years ago
Geometry math show work thanks
Deffense [45]

Part (a)

The angles would stay the same. This is because similar figures keep the same shape, but the size will shrink or grow.

A real world application is to simply move your head closer to the page and the figure will appear to get larger. The angles themselves stay the same but the side lengths will get larger.

====================================================

Part (b)

While the angles stay the same under a dilation operation, the side lengths do not. As the instructions state: "The side lengths are 3 times longer" (paraphrased).

So we multiply each side length in the diagram by 3

  • DE = 3*JK = 3*4.5 = 13.5
  • EF = 3*KL = 3*3 = 9
  • FG = 3*LM = 3*2 = 6
  • GD = 3*MJ = 3*2.5 = 7.5

Refer to the diagram below. I've used the resize feature to enlarge the image to make figure DEFG

8 0
3 years ago
For any nonzero real number a, the __________ of a is 1/a .
SIZIF [17.4K]

A non zero real number could be written as a/1.

When this gets reversed to be 1/a, it is the multiplicative inverse.

4 0
3 years ago
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