All categories

3 years ago

Find the value of x that makes each equation true.

1 answer:

8 0

$1.\\\\ 3x-10=2\\3x=2+10\\3x=12\ \ /:3\\ x=\frac{12}{3}\\x=4\\\\2.\\\\ 8x-10=x+11\\8x-x=11+10\\7x=21\ \ /:7\\x=\frac{21}{7}\\x=7$

$3.\\\\ 5x-7=7x-17\\5x-7x=-17+7\\-2x=-10\ \ /:(-2)\\x= \frac{-10}{-2}\\x=5$

$4.\\\\ 3x+9=44-2x\\3x+2x=44-9\\5x=35\ \ /:5\\x=\frac{35}{7}\\x=5\\\\5. \\\\3x+6=x+2\\3x-x=2-6\\2x=-4\ \ /:2\\x=-\frac{4}{2}\\x=-2
$

You might be interested in

Help me I WILL GIVE BRAINLEST

pashok25 [27]

Answer:

OPTION B IS CORRECT COZ DISTANCE OF TWO POINTS ARE ALWAYED SUBTRACTED

6 0

3 years ago

Convert 5.4 ⋅ 103 to standard form. 0.0054 0.00054 5,400 54,000

KATRIN_1 [288]

54*10 to the 3rd power equals 5'400

6 0

3 years ago

Which of the following best describes the expression 3x + 2y + 8z?

Gwar [14]

The expression above is composed of 3 terms which are: 3x, 2y, and 8z. All of the terms are the product of two items. The first term is a product of 3 and x. The second is a product of 2 and y. Lastly, the third is a product of 8 and z.

<span>Thus, the expression is a sum of three products and there are only three terms. This answer is the second among the four choices.

hope this helps : )

</span>

8 0

3 years ago

A cube-shaped aquarium has edges that are 3 feet long and is filled with water that has a density of 62 lbs/ft3 Should the aquar

Sunny_sXe [5.5K]

Given:

There are given the edge of the cube-shaped aquarium has 3 feet.

Explanation:

To find the value, we need to use the volume of the cube formula:

So,

From the formula of volume:

$V=a^3$

Where

a represents the value of edge.

So,

Put the value of edge into the above formula:

Then,

$\begin{gathered} V=a^3 \\ V=3^3 \\ V=27cube\text{ feet} \end{gathered}$

Now,

The water has a density of 62 pounds per cube foot.

According to the question:

If the weight of 1 cubic foot of water is 62 pounds, then the weight of 27 cube feet water is:

$62\times27=1674pound$

Final answer:

Hence, the water weight of the full aquarium is 1674 pounds, and the table only susupports00 pounds. So the table cannot hold the aquarium.

And,

No, the density of water would not change.

6 0

1 year ago

The temperature dropped 6 °F every hour for 6 hours. What was the total number of degrees the

morpeh [17]

Answer:

This problem is a rate times time problem. To find the total amount, you must take the rate per unit of time, and multiply it by the given unit of time

Step-by-step explanation:

-5degrees/hr x 6hr=-30 degrees

6 0

3 years ago