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3 years ago

5

Use the figure to the right to find the value of PT. T is the midpoint of PQ. PT = 7x + 2 and TQ = 9x - 6 PT = = (Simplify your

answer.) A

1 answer:

Llana [10]3 years ago

5 0

Answer:

30

Step-by-step explanation:

PT = TQ

PT = 7x + 2

TQ = 9x - 6

7x + 2 = 9x - 6

9x - 6 = 7x + 2

9x - 7x = 2 + 6

2x = 8

x = 8 / 2

x = 4

Substitute x = 4 in PT,

PT = 7x + 2

= 7 ( 4 ) + 2

= 28 + 2

PT = 30

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RUDIKE [14]

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Explanation:

We are given the below frequency table:

Score Frequency

1 | 0

2 | 3

3 | 4

4 | 16

5 | 22

Let's denote the score by $x$ and frequency by $f$ .

The average formula is:

$Average=\frac{\sum fx}{\sum f}$

$=\frac{(1\times0) + (2\times3)+(3\times4) +(4\times16) + (5\times22)}{0+3+4+16+22}$

$=\frac{0+6+12+64+110}{45}$

$=\frac{192}{45}=4.267$

Therefore, the average score was 4.267

Hence the option D) 4.266

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