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3 years ago

Solve 2(x+3) = x - 4

Mathematics

2 answers:

Andrews [41]3 years ago

8 0

X=2 is the answer do you need to know why

vagabundo [1.1K]3 years ago

4 0

First multiply:

2x + 6 = x - 4

Now rearrange so you have all the x on one side (remember to change the sign when you move from one side to the other):

2x - x = - 4 - 6

Do the sums:

x = -10

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A random survey shows that 14 out of 21 students plan to vote for Jacob for class president. Which is the best prediction of the

FromTheMoon [43]

Answer: C. 120

Step-by-step explanation:

14/21 will get you 66.6. Taking that number and multiplying it by the 180 total students will end you with 120 which is your answer.

6 0

4 years ago

Expand and simplify (2x−12) ^2

lubasha [3.4K]

Answer:

$\boxed{4x^{2} - 48x + 144}$

Step-by-step explanation:

Given expression:

(2x - 12)²

To simplify the expression, we will use the formula (a - b)² = a² - 2ab + b².

[Where "a and b" are the first and second term in (a - b)²]

$\rightarrowtail (2x - 12)^{2}$

In this case, the first term of (2x - 12)² is "2x" and the second term is "12".

$\rightarrowtail (2x)^{2} - 2(2x)(12) + (12)^{2} \ \ \ \ \ \ \ \ \ \ \ \ \ \ [\small\text{First term = a = 2x; Second term = b = 12]}$

Now, simplify the expression.

$\rightarrowtail (2x)^{2} - 2(2x)(12) + (12)^{2}$

$\rightarrowtail (2x)(2x) - (4x)(12) + (12)(12)$

$\rightarrowtail \boxed{4x^{2} - 48x + 144}$

4 0

3 years ago

Complete the pattern Blank 8570 blank 85.7 8.57 blank

Nataly [62]

85700, 8570, 857, 85.7, 8.57, .857

4 0

4 years ago

Add and simplify: 9/16 + 1/2=?

tamaranim1 [39]

1 1/16 is it's simplest form.

4 0

3 years ago

Help with this please

Harlamova29_29 [7]

If C is the MIDPOINT of BD, and BD equals 12, then what does CD equal?
AD = AC+CD, so you only need to find length of CD and add length of AC (which you already have) to it.
Hope this helps

3 0

3 years ago