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just olya [345]
3 years ago
7

Can someone help me solve this please I don’t know how to do it

Mathematics
1 answer:
diamong [38]3 years ago
5 0

Step-by-step explanation:

NO = TS

  1. 20 = 3x-7
  2. 20+7 = 3x
  3. 27 = 3x
  4. 27/3 = x
  5. 9 = x

Hope this helps you.

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Julia was creating similar triangles in the coordinate plane. The first triangle had a rise of 3 and a run of 10. The second tri
valina [46]

Yes julia is correct the run of the scond similar triangle will be b2=25.

<h3>What are simlilar traingles?</h3>

The similar triangle are those whose three sides or one angle or two sides or two angles one side are equal.

In the given:

Height of first triangle h=3

Base of first traingle =10

Height of second triangle =7.5

The base of second triangle b2 = ?

From the triangle similarity

\dfrac{h_1}{b_1}=\dfrac{h_2}{b_2}

\dfrac{3}{10}=\dfrac{7.5}{b_2}

b_2=\dfrac{7.5\times 10}{3}

b_2=25

Thus julia is correct the run of the scond similar triangle will be b2=25.

To know more about similar triangle follow

brainly.com/question/2644832

3 0
2 years ago
Given the data set, find the M.A.D.: 87,75, 85, 77, 74,<br> 82, 90, 88, 79, 83*
Masteriza [31]

Answer:

MAD: 4.6

Hope this helps!

5 0
3 years ago
WILL GIVE BRAINLIEST What are the like terms in the algebraic expression? Negative a squared b + 6 a b minus 8 + 5 a squared b m
Minchanka [31]

Answer: B

Negative a squared b and 5 a squared b

Step-by-step explanation:

Given that:

Negative a squared b + 6 a b minus 8 + 5 a squared b minus 6 a minus b. That is,

- a^2b + 6ab - 8 + 5a^b - 6a - b

Collecting the like term by rearranging the expression

5a^2b - a^2b + 6ab - 6a - b

The like terms in the expression above are

5a^2b - a^2b.

The correct option is B:

Negative a squared b and 5 a squared b or (-a^2b and 5a^b)

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3 years ago
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artcher [175]
Because she was bored
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Rewrite x^2+12x+42 in the form (x+b)^2 +c
Rzqust [24]
This is completing the square:

(x^2+12x+36)+42-36

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