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algol [13]
3 years ago
11

Use the distributive property to expand the following expression (9m-6)7 please help

Mathematics
2 answers:
rjkz [21]3 years ago
8 0

Answer:

wow you should really ask this question. LOL

Step-by-step explanation:

Drupady [299]3 years ago
7 0

Answer:2/3

Step-by-step explanation:

Simplifying

(9m + -6) * 7 = 0

Reorder the terms:

(-6 + 9m) * 7 = 0

Reorder the terms for easier multiplication:

7(-6 + 9m) = 0

(-6 * 7 + 9m * 7) = 0

(-42 + 63m) = 0

Solving

-42 + 63m = 0

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '42' to each side of the equation.

-42 + 42 + 63m = 0 + 42

Combine like terms: -42 + 42 = 0

0 + 63m = 0 + 42

63m = 0 + 42

Combine like terms: 0 + 42 = 42

63m = 42

Divide each side by '63'.

m = 0.6666666667

Simplifying

m = 0.6666666667=2/3 when simplified

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7. a hockey arena has 10 920 seats. the first row of seats around the rink has 220 seats. the number of seats in each subsequent
Mazyrski [523]

The number of rows in the arena is 26

<h3>How to determine the number of rows?</h3>

The hockey arena illustrates an arithmetic sequence, and it has the following parameters:

  • First term, a = 220
  • Sum of terms, Sn = 10920
  • Common difference, d = 16

The number of rows (i.e. the number of terms) is calculated using:

S_n = \frac{n}{2}(2a + (n -1) * d)

So,we have:

10920 = \frac{n}{2}(2 * 220 + (n -1) * 16)

Evaluate the terms and factors

21840 = n(440 + 16n -16)

Evaluate the like terms

21840 = n(424+ 16n)

Expand

21840 = 424n + 16n^2

Rewrite as:

16n^2 + 424n - 21840 = 0

Using a graphical tool, we have:

n = 26

Hence, the number of rows in the arena is 26

Read more about arithmetic sequence at:

brainly.com/question/6561461

#SPJ1

4 0
2 years ago
Vera already owns 10 necklaces, and additional necklaces are priced at 2 for a dollar. How much money does Vera need to spend on
Llana [10]

Vera has 5 pairs of necklaces and wants to own 22 pairs. That means she needs to purchase 17 pairs at $1 per pair.

Vera needs to spend $17.

7 0
3 years ago
The principal will have to increase the number of eighth grade next year if the seventh grade enrollment exceeds 110% of the cur
kirill115 [55]

Answer:

Refer below.

Step-by-step explanation:

The principal will have to increase the number of teachers next year.

We found out that the seventh grade enrollment was 120% of the number of eight graders, which is greater than 110%.

6 0
3 years ago
Help me on number 15 please
Deffense [45]

You've already correctly labeled everything you need.

-- Ignore the lines  YZ  and  YT .

-- That leaves you with the right triangle   XYW .

-- Its legs are  8  and  (12+3) = 15 .

-- XY  is its hypotenuse.

I'm SURE you can finish it off from here.
6 0
3 years ago
Read 2 more answers
Which answer is correct ?
Radda [10]

Answer:

C the table and the equation

Hope this helps :)

7 0
3 years ago
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