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nikdorinn [45]
3 years ago
5

Solve -2 x + 6 = -20. -13 13 -7 7

Mathematics
2 answers:
KATRIN_1 [288]3 years ago
8 0

Answer:

-13 or 13

Step-by-step explanation:

aleksandr82 [10.1K]3 years ago
4 0
First, we need to get the variable by it self.
-2x+6=20
-6=-6
-2x=14
Next, since the operation is multiplication, we need to divided both sides by -2.
X=-7
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Expand (x+b/2a)²<br><img src="https://tex.z-dn.net/?f=%28x%20%2B%20%5Cfrac%7Bb%7D%7B2a%7D%20%29%20%7B%7D%5E%7B2%7D%20" id="TexFo
slega [8]

Answer:

Solution given:

(x + \frac{b}{2a} ) {}^{2}

Since it is a form of (a+b)²

we have

(a+b)²=a²+2ab+b²

here

a=x

b=b/2a

now

substituting value

x²+2*x*b/2a+(b/2a)²

\bold{\green{x²+\frac{bx}{a}+\frac{b²}{4a²}}}

8 0
3 years ago
Find the slope of a line that passes through the points (17,2) and (17,-3)
Yuri [45]

Answer:

Undefined

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-3-2)/(17-17)

m=-5/0

m=undefined

8 0
3 years ago
A rectangular jewelry box costs $125 to gold plate. Calculate the cost of gold plating a box which is similar in shape and that
Alja [10]
To determine the amount of gold plating necessary for the similar box, you will use the fact that it is 8 times larger in volume to determine how many times larger the area is.  This would be what you will multiply $125 by.

Volume is a three dimensional measurement, so the fact that it is 8 times larger tells us each dimension was 2 times larger (2 x 2 x 2=8).  

Area is a two dimensional measurement, so the area would have been 2 x 2 or 4 times larger.  This means the price would be 4 times as much.
$125 x 4 = $500.

It will cost $500 to gold plate the similar jewelry box.
7 0
3 years ago
Write the equation of the line that passes through (3, 4) and 2, -1) in slope-intercept form
Marat540 [252]

Answer:

Step-by-step explanation:

(-1 -4)/(2 - 3) = -5/-1 = 5

y - 4 = 5(x - 3)

y - 4 = 5x - 15

y = 5x - 11

4 0
3 years ago
Which statement makes the open sentence 12+3x=30
Sergio [31]
12 + 3x = 30 // what is x?
3x = 18
x = 6

6 0
3 years ago
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