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exis [7]
3 years ago
13

3.5x - 11 = 20.5 what does x equal?

Mathematics
2 answers:
stepan [7]3 years ago
7 0

Answer:

x=9

Step-by-step explanation:

3.5x - 11 = 20.5

Add 11 to each side

3.5x - 11+11 = 20.5+11

3.5x = 31.5

Divide each side by 3.5x

3.5x/3.5 = 31.5/3.5

x =9

Ivenika [448]3 years ago
6 0

Answer:

x=9 (don't look at explanation)

Step-by-step explanation:

Let's solve your equation step-by-step.

3.5x−11=20.5

Step 1: Add 11 to both sides.

3.5x−11+11=20.5+11

3.5x=31.5

Step 2: Divide both sides by 3.5.

3.5x

3.5

=

31.5

3.5

x=9

Answer:

x=9

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Which side lengths form a right triangle?
deff fn [24]

Answer:

b

Step-by-step explanation:

6^2+8^2=100

sqrt of 100 = 10 so it would form a right triangle

8 0
3 years ago
Simplify completely. 5(x - 2) + 2x
fomenos
<span>5(x - 2) + 2x
= 5x - 10 + 2x
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answer
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4 0
3 years ago
Read 2 more answers
The expression 4x(2x+7)-5(3x-2) simplifies to
Burka [1]
So step one is to distribute the 4x through and the -5 through. After distributing you get 8x^{2}+28x-15x+10. Combine the like terms, 28x and -15x, to get 13x. Your answer is 8x^{2}+13x+10
7 0
3 years ago
Slope is 2 and goes through the point (0,-11)
DIA [1.3K]

Answer:

y = 2x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 2

The line crosses the y- axis at (0, - 1) ⇒ c = - 1

y = 2x - 1 ← equation of line

4 0
3 years ago
Sammy is trying to determine how many triangles she can create out of a square grid that has a side of 14 inches. Use the image
saw5 [17]
Hello!

You first have to find the area of the square grid

To find this you multiply the sides

14 * 14 = 196

Next you have to find the area of the triangle

To find the area of a triangle you use the equation

\frac{hb}{2}

h is height
b is base

Put in the values you know
\frac{7 * 14}{2}

Multiply

\frac{98}{2} = 49

The area of the triangle is 49 inches squared

You divide the area of the triangle by the area of the square

196 / 49 = 4

The answer is 4 triangles

Hope this helps!
6 0
3 years ago
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