All categories

3 years ago

If –3x = -18, what is the value of x?

Mathematics

2 answers:

yan [13]3 years ago

7 0

-3x=-18

divide both sides by -3

to get +x

to get x by itself

-3x/-3=-18/-3

cross out -3 and -3, divide by -3

then becomes -1*-1*x=1*x=x

x=-18/-3

answer:

x=6

kherson [118]3 years ago

5 0

Answer: x = 6

Step-by-step explanation: To solve for x in this equation, we want to get x by itself on the left side of the equation. Since x is being multiplied by -3, to get x by itself, we need to divide by -3 on the left side of the equation. Since we divided by -3 on the left side, we must also divide by -3 on the right side.

On the left side, notice that the -3's cancel out so we are simply left with x. On the right side, we have -18 ÷ -3 which is 6 so we have x = 6.

Finally, remember to check your answer by substituting a 6 back into the original equation. So we have -3 (6) = -18 which is a true statement.

So our answer x = 6 is correct.

Remember to show all your work when solving equations.

You might be interested in

Which value is equivalent to 3 x 12 / ( 4 + 2) A 6 B 11 C 12 D 15

konstantin123 [22]

3x12/(4+2)

36 divided by 6 = 6

Your answer is A 6

8 0

2 years ago

a pipeline is laid at a rate of 1/8 mile per day.How many miles of line would be completed in 29 1/2 days

Setler [38]

Answer:

In 29 1/2 days, the total pipe laid is $(\frac{59}{16})$ mile.

Step-by-step explanation:

The length of pipe laid in 1 day = 1/8 mile

So, the length of pipe laid in half day = half of (1/8 mile)

= $\frac{1}{2} \times \frac{1}{8} = \frac{1}{16} \textrm{mile}$

Now, 29 1/2 days on simplification means 29 and half day.

So, length of pipe in 29 days = $29 \times \frac{1}{8} = \frac{29}{8}$ mile

Now adding the length laid in half day = $\frac{29}{8} + \frac{1}{16} = \frac{29 (2) + 1}{16} = \frac{59}{16} \textrm{mile}$

So, in 29 1/2 days, the total pipe laid is $(\frac{59}{16})$ mile.

8 0

3 years ago

Find the product of (x − 8)2 and explain how it demonstrates the closure property of multiplication.

Zarrin [17]

Answer:

Step-by-step explanation:

(x-8)^2=(x-8)(x-8)=x^2-8x-8x+64=x^2-16x+64

8 0

3 years ago

Read 2 more answers

How do I find slope?

Korolek [52]

To find the slope in the graph you need to find two perfect points on the line then count how many times you went up which is the y over how many times you go right which is the x its called the rise/run. To find the slope in the equation use the formula y2-y1/x2-x1.

7 0

3 years ago

Read 2 more answers

What is the permeter of square ABCD?

marshall27 [118]

Answer:

24.3 units (3 s.f.)

Step-by-step explanation:

Since a square has 4 equal sides,

perimeter of ABCD= 4(length of AB)

Distance between 2 points

= $\sqrt{(y1 - y2)^{2} + (x1 - x2)^{2} }$