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ladessa [460]
2 years ago
12

Solve for x: 7x+ 2 = 16

Mathematics
2 answers:
Shalnov [3]2 years ago
4 0

Answer:

x=2

Step-by-step explanation:

First, subtract 2 on both sides

7x+2=16

7x=14

Divide by 7 on both sides

x=2

Hope this helps! :)

slava [35]2 years ago
4 0

Answer: x = 2

Step-by-step explanation: To solve for <em>x</em> in the equation you see here, our goal is to get <em>x</em> by itself.

Our first step will be to isolate the

term containing <em>x</em> which in this case is 7x.

To isolate 7x, we have to get rid of the +2 by subtracting 2 from both sides of the equation. On the left, +2 and -2 cancel out and we're simply left with 7x. On the right, 16 - 2 simplifies to 14.

So we have 7x = 14.

Now divide both sides by 7 and we find that <em>x = 2</em>.

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What two numbers would make:<br> a + b = -11<br> AND<br> a x b = 28
ycow [4]

The first step I would do would be to list the factors of 28.

28(1)

14(2)

7(4)

Now notice that 7 + 4 = 11

So that means that -7 + -4 = -11.

Therefore, -7(-4) = 28

Your two numbers are - 7 and - 4.  Hope that helps!

4 0
3 years ago
The equation of a line is y= -1/2x - 2. What is the equation of the line that is perpendicular to the first line and passes thro
Fed [463]
If two line are perpendicular. The multiply of their slopes are equal to -1. 
First line's slope is: -1/2x because if the line equation is form of y=ax+b a is slope. 
Let say second line's slope is m
m.-1/2=-1  so m=2 
y=ax+b is general form of linear function/equation. (a=slope)
y=2x+b 
If this line passes through the point (2,-2),if we write -2 to y and 2 to x, the equation becomes true. 
-2=4+b
b=-6 
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y=2x-6 is true answer.

3 0
3 years ago
Help please been stuck on this for a week.
Anettt [7]
They give the formula as:
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However the 2*PI*r^2 part of the formula is used to calculate the 2 "ends" of a cylinder.  Since the problem states that you are NOT to count any of surface area of the "ends" then you only need the <span>(2 • <span>π • r • height) part of the formula.
So, r = 3 inches and height = 8 * 3 inches, the side area equals
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2 * 3.14159 * 3 * 24 =
</span></span>
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6 0
3 years ago
Select the points that are solutions to the system of inequalities. Select all that apply
Nana76 [90]

Answer:

(-10, 10) and (0,10).

Step-by-step explanation:

For a point to be a solution to the system of inequalities, you will need to see which of the points falls into the shaded area.

When we test out each of the points, we can see that only:

(-10, 10) and (0,10) fall into the blue-shaded area.

8 0
2 years ago
A piece of green rope is being used to make a border around the outside of a sculpture that is in the shape of an equilateral tr
damaskus [11]

Answer:

The equivalent expressions are;

9x + 9

and

9(x + 1)

Step-by-step explanation:

Mathematically, we should understand that an equilateral triangle has all of its sides equal

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Therefore, the length of the rope represents the perimeter of the triangle

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This will be;

3x + 3 + 3x + 3 + 3x + 3 = 9x + 9

This is also same as 9(x + 1)

5 0
3 years ago
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