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never [62]
2 years ago
15

Solve pls brainliest

Mathematics
2 answers:
Brums [2.3K]2 years ago
8 0

Answer:

the missing number is 18

Step-by-step explanation:

What would you do to 7 to get 21? multiply by 3. you would do the same to the 6.

zloy xaker [14]2 years ago
3 0
X = 18

Solving steps attached

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Inverse of the function f(x) =1/9 x+2
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The inverse of this function is g(x)=9x+2. if this doesn’t work, try g(x)=9x-2 :)
7 0
3 years ago
7(x+3)=-2(x-5) <br> Help pls?
olganol [36]

Answer:

x = -11/9

Step-by-step explanation:

7(x+3)=-2(x-5)

Distribute

7x+21 = -2x+10

Add 2x to each side

7x+21 +2x = -2x+10+2x

9x +21 = 10

Subtract 21 from each side

9x +21-21 = 10-21

9x = -11

Divide each side by 9

9x/9 = -11/9

x = -11/9

3 0
3 years ago
Read 2 more answers
The expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. If the length is Fr
Art [367]

Answer:

Perimeter = 1 unit

Step-by-step explanation:

length \ is \ a \ fraction \ 2  \ over \ 3 = \frac{2}{3}\\\\Width \ is \ a \ fraction \ 1 \ over \ 3 = \frac{1}{3}\\\\Perimeter = 2 ( l + w)\\

               = 2 \times (\frac{2}{3} + \frac{1}{3}) \\\\=2 \times (\frac{3}{3})\\\\= 1 unit

5 0
3 years ago
Students reported practicing violin during the last semester for 45, 38, 52, 58, and 42 hours. What is the mean absolute deviati
borishaifa [10]
6.4 is the answer you are looking for! Hope that helps :))
6 0
3 years ago
Find -3a2 - b3 + 3c2 - 2b3 if a = 2, b = -1, and c = 3
Studentka2010 [4]
If you would like to solve - 3 * a^2 - b^3 + 3 * c^2 - 2 * b^3, if a = 2, b = -1, c = 3, you can calculate this using the following steps:

a = 2, b = -1, c = 3
- 3 * a^2 - b^3 + 3 * c^2 - 2 * b^3 = - 3 * 2^2 - (-1)^3 + 3 * 3^2 - 2 * (-1)^3 = - 3 * 4 - (-1) + 3 * 9 - 2 * (-1) = - 12 + 1 + 27 + 2 = 18

The correct result would be 18.

6 0
3 years ago
Read 2 more answers
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