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cupoosta [38]
3 years ago
9

Please help!!! 3(x – 10) = -9

Mathematics
2 answers:
sergey [27]3 years ago
3 0

Answer:

The answer is x = 7

Step-by-step explanation:

Divide each term by  3  and simplify. Move all terms not containing  x  to the right side of the equation.

Rainbow [258]3 years ago
3 0

Answer:

\huge\boxed{x=7}

Step-by-step explanation:

In order to solve for x, our goal is to isolate it on one side of the equation. We can do this by reversing the equation.

Let's apply the distributive property on the left side:

(3 \cdot x) + (3 \cdot -10) = -9\\\\3x-30=-9

Add 30 to both sides:

3x - 30 + 30 = -9 + 30\\\\3x = 21

Divide both sides by 3:

3x \div 3 = 21 \div 3\\\\x = 7

So x = 7.

Hope this helped!

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Emma has 7 bottles: 3 bottles that contain juice, 2 bottles
UNO [17]

Answer: Out of 7 bottles, 2 bottles contain soda. This means that 2 bottles= 29% out of 100%. 7/2 (7 divided by 2) = 0.285. 0.285 can be rounded up to 0.29, meaning that the approximate percentage of the bottles that contain soda is 29%.

4 0
3 years ago
What lump sum do parents need to deposit in an account earning 9%, compounded monthly, so that it will grow to $100,000 for thei
gogolik [260]

Answer:

They need to deposit $31,172.49

Step-by-step explanation:

The compound interest formula is given by:

A = P(1 + \frac{r}{n})^{nt}

Where A is the amount of money, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time the money is invested or borrowed for, in years.

In this problem

We want to find P for which A = 100000 when r = 0.09, n = 12, t = 13

So

A = P(1 + \frac{r}{n})^{nt}

100000 = P(1 + \frac{0.09}{12})^{12*13}

3.208P = 100000

P = \frac{100000}{3.208}

P = 31172.49

They need to deposit $31,172.49

6 0
3 years ago
What is the perimeter and area of 5.6 2.1
Svetlanka [38]
If 5.6 and 2.1 are the measurements then:
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Perimeter=15.4
7 0
3 years ago
What is the median number of hours volunteered by the students in
Anna11 [10]

Answer:

40

Step-by-step explanation:

The sum equals 80 80/2=40

6 0
3 years ago
Read 2 more answers
Identify the slope and y-intercept of each of the following lines. Then graph each line.
lesya692 [45]

Answer:

Yes, but you have to write what the slope and y-intercept of the equation is as well.

Step-by-step explanation:

(Not sure if you wanted the full answer or just if you should graph it but I'm putting it here anyways :^P)

First convert the equation from standard form to slope-intercept form.

5x-3y=18 -> 5x-18-3y -> 5/3x-6=y

5/3x is the slope and 6 is the y-intercept!

Then graph the equation.

6 0
2 years ago
Read 2 more answers
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