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alisha [4.7K]
3 years ago
5

6m-6=9m+15 (Show work)​

Mathematics
2 answers:
Kruka [31]3 years ago
7 0

Answer:

m = -7

Step-by-step explanation:

  1. Combine like factors. It should now look like this: 6m - 9m = 6 + 15
  2. 6 + 15 = 21
  3. Plug 21 in: 6m - 9m = 21
  4. 6m - 9m = -3m
  5. Plug -3m in: -3m = 21
  6. Divide each side by -3 to cancel out the -3 next to x. It should now look like this: m = -7

I hope this helps!

9966 [12]3 years ago
6 0

Answer:

m=-7

Step-by-step explanation:

6m-6=9m+15

Add 6 to both sides:

6m-6+6=9m+15+6

6m=9m+21

Subtract 9m from both sides:

6m-9m=9m+21-9m

-3m=21

Divide both sides by -3:

\frac{-3m}{-3}=\frac{21}{-3}

m=-7

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PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!
Lelu [443]

Answer:

2. x = -16       y = -10.5

3. x = 4

4. x = 3         y = 2/9 or 0.2222222222222...

Step-by-step explanation:

2.

in my stategy, you plus -5x + 8y = -4 with 6x - 8y = -12

+8y and -8y could delete each other, then y will be gone.

-5x + 6y = 1x = x because -5 + 6 = 1

so then you could got x = (-4) + (-12) which means x = -16

if x = -16 that will then means

(-5) x (-16) + 8y = -4

80 + 8y = -4

8y = -4 - 80

8y = -84

y = -10.5

3.

This question has already given you that y = -5

that means,  3x + 6 × (-5) = -18

3x + -30 = -18

3x = -18 - (-30)

3x = 12

x = 4

4.

Like the 2. qestion, you first plus the 2 equation together,

+9y + -9y = 0

-7x + 4x = -3x

-19 + 10 = -9

than means

-3x = -9

x = 3

then put the x = 3 in one of the equation.

4 x 3 - 9y = 10

12 - 9y = 10

-9y = 10 - 12

-9y = -2

-7 x 3 + 9y = -19

-21 + 9y = -19

9y = -19 + 21

9y = 2

y = 2/9 or 0.2222222222...

Wish this could help you!

8 0
3 years ago
Read 2 more answers
Classify this triangle by the angles and lengths of sides shown.
Rashid [163]
C all angle measures under 90 degrees
3 0
3 years ago
A palm tree casts a shadow that is 28 feet long. A 6-foot sign casts a shadow 8 feet long.
s2008m [1.1K]

Answer: The height of the palm tree is 21 feet.

Step-by-step explanation:

We can use a ratio to solve this:

Actual height to shadow for both objects. The fraction equivalents must be equal.

6/8 = x/28 . Cross multiply

6(28) = 8x

168 = 8x   Divide both sides by 8  (8's "cancel" on the right)

168/8 =8x/8

21 = x . This gives us the tree's height as 21 feet.

<em>Another way to solve this is to use the ratios, but simplify the first fraction</em>

<em>6/8 = 3/4</em>

<em>Then multiply the length of the shadow by 3/4</em>

<em>3/4 × 28 = height</em>

<em>28÷4 = 7    7 × 3 = 21</em>

<em>21  feet= the height of the palm tree.</em>

3 0
3 years ago
Find the area of the composite figure.
Tanzania [10]

Answer:

90 m

Step-by-step explanation:

The piece on the right side fits perfectly in the left side so you can move the triangle to the left in order to make a square. After that, you can do 10 times 9 because 5+4=9 to get 90m as the area.

8 0
3 years ago
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Jet is setting up q holiday light display.He wants to make a tree in the shapes of two right trangle ahd has two 10 -foot strinb
Mrac [35]

Answer:

10 feet

Step-by-step explanation:

justdo it you will win

3 0
3 years ago
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