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vampirchik [111]
2 years ago
13

Solve the equation. 3 (x - 1) = 18

Mathematics
2 answers:
marishachu [46]2 years ago
6 0
Expand: 3x-3=18
Move 3 to other side: 3x=21
Divide the 3 over: x=7
In-s [12.5K]2 years ago
4 0
  • 3 ( x - 1 ) = 18
  • or, 3x - 3 = 18
  • or, 3x = 18 - 3
  • or, 3x = 15
  • or, x = 15 ÷ 3
  • or, x = 5

<u>Answer</u><u>:</u>

<u>x </u><u>=</u><u> </u><u>5</u>

Hope you could understand.

If you have any query, feel free to ask.

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Use the formula a2 – b2 = (a b)(a – b) to factor completely. what are the factors of 36x8 – 49? (9x4 – 1)(4x2 49) (36x4 – 7)(x2
zimovet [89]

The factors of 36x^8 – 49 are  (6x^4-7)(6x^4+7).

We are given to factor the following polynomial completely:

36x^8 – 49.

We have to find the complete factor of the given polynomial.

Completely factor means to continuously factor terms until they are in simple terms, meaning you are no longer able to factor

<h3>What is the formula for (a^2-b^2)?</h3>

The formula for (a^2-b^2)= (a+b) (a-b).

Therefore applying the given formula we have,

F=(6x^4)^2-7^2

F=(6x^4)^2-7^2\\F=((6x^4)-7)(6x^4)+7)

Thus, the required factors are

F=((6x^4)-7)(6x^4)+7)

Therefore,option (C) is correct.

To learn more about factors visit:

brainly.com/question/25829061

7 0
1 year ago
According to the data in the figure, find the value of x and y.
drek231 [11]

Answer:

This is a educated guess, but x is 80 and y is 100.

Step-by-step explanation:

My logic here is that the triangles are the same because of all the congruent lines and stuff. But from there, you know that both the right and the left side are 40 degrees. You know the total degree of a triangle is 180 so 180 - 40 - 40 is 100. So the final angle is 100. If you look at x, its on the outside, but on a line. If you can imagine a circle, its half, so its a 180 degrees total. Then its 180 = x + 100. So x is 80. And then by that same logic its y = 100.

6 0
1 year ago
bobbie wrote y+6=15. than she wrote (y+6) divided by 3=15. Explain why the second equation is not equivalent to the first. what
irina1246 [14]
If y+6=15, then y=9. (9+6)divided by 3 would be 5, not 15.
4 0
3 years ago
Algebraic expressions and translations<br> Solve -3+5×=8
vovangra [49]

Answer:

x = 11/5

Step-by-step explanation:

-3 + 5x = 8

5x = 8 + 3

5x = 11

x = 11/5

Mark me brainliest

8 0
3 years ago
A cookie has 130 calories.
pychu [463]
I think the answer would be B
5 0
3 years ago
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