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ahrayia [7]
2 years ago
14

True or False? Tell whether the pair of ratios form a proportion. 8/12 and 14/21 Please explain why you chose what you chose​

Mathematics
1 answer:
erik [133]2 years ago
8 0

Answer:

True; The pair of ratios form a proportion.

Step-by-step explanation:

To tell whether these two ratios are proportional, we can simplify each of them

\frac{8}{12} =\frac{2}{3}

\frac{14}{21} =\frac{2}{3}

As both ratios simplify into the same ratio, they are proportional.

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Help and explain explain !!!!!!!!!!
tigry1 [53]

Answer:

x=-1\text{ or }x=11

Step-by-step explanation:

For a=|b|, we have two cases:

\begin{cases}a=b,\\a=-b\end{cases}

Therefore, for 18=|15-3x|, we have the following cases:

\begin{cases}18=15-3x,\\18=-(15-3x)\end{cases}

Solving, we have:

\begin{cases}18=15-3x, -3x=3, x=\boxed{-1},\\18=-(15-3x), 18=-15+3x, 33=3x, x=\boxed{11}\end{cases}.

Therefore,

\implies \boxed{x=-1\text{ or }x=11}

3 0
2 years ago
Three sides of a kite measure 8 inches, 10 inches, and 8 inches. What is the perimeter of the kite?
olganol [36]

Answer:

26

Step-by-step explanation:

8+10+8=26

3 0
2 years ago
Emily drives her car 42 miles in 1 hour. what is her average speed in miles per hour.
Svetradugi [14.3K]

Answer:

65 mph would be the answer

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
Which is the correct second step for solving the equation (×+3)^2-4=18
Aleksandr-060686 [28]
(x^2)+9-4=18
x^2+5=18
7 0
3 years ago
7-8÷4(3^2-1) ~answer step by step please~
Schach [20]

Answer:

-9

Step-by-step explanation:

Simplify the following:

7 - 8/4 (3^2 - 1)

Hint: | Evaluate 3^2.

3^2 = 9:

7 - 8/4 (9 - 1)

Hint: | Subtract 1 from 9.

9 - 1 = 8:

7 - 2×8

Hint: | Divide 8 by 4.

8/4 = (4×2)/4 = 2:

7 - 2×8

Hint: | Multiply -2 and 8 together.

-2×8 = -16:

7 + -16

Hint: | Subtract 16 from 7.

7 - 16 = -9:

Answer:  -9

5 0
3 years ago
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