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3 years ago

Find the value of X in the figure PQ is tangent to O at P

Mathematics

1 answer:

andrew11 [14]3 years ago

7 0

Answer:13

Step-by-step explanation:

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How do I factorise 42 - 66x

lisov135 [29]

The answer is 6(-11x+7)

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3 years ago

An English professor assigns letter grades on a test according to the following scheme. A: Top 15% of scores B: Scores below the

lisabon 2012 [21]

Answer:

59 to 66

Step-by-step explanation:

Mean test scores = u = 74.2

Standard Deviation = $\sigma$ = 9.6

According to the given data, following is the range of grades:

Grade A: 85% to 100%

Grade B: 55% to 85%

Grade C: 19% to 55%

Grade D: 6% to 19%

Grade F: 0% to 6%

So, the grade D will be given to the students from 6% to 19% scores. We can convert these percentages to numerical limits using the z scores. First we need to to identify the corresponding z scores of these limits.

6% to 19% in decimal form would be 0.06 to 0.19. Corresponding z score for 0.06 is -1.56 and that for 0.19 is -0.88 (From the z table)

The formula for z score is:

$z=\frac{x-u}{\sigma}$

For z = -1.56, we get:

$-1.56=\frac{x-74.2}{9.6}\\\\ x = 59$

For z = -0.88, we get:

$-0.88=\frac{x-74.2}{9.6}\\\\ x = 66$

Therefore, a numerical limits for a D grade would be from 59 to 66 (rounded to nearest whole numbers)

7 0

3 years ago

Simplify. 8r(4 - p) 32r -p 32r - 8rp 32 - rp 4 - 8rp

gizmo_the_mogwai [7]

So the right answer is of option B.

Look at the attached picture

hope it will be helpful to you...

4 0

3 years ago

Read 2 more answers

URGENT Two numbers have a sum of 2 and a difference of -16. What are the numbers?

Firlakuza [10]

Answer:

-7 and 9!

Step-by-step explanation:

To get to the sum of 2 you add -7 and 9.

To get to the diffrence of -16 you minus -7 and 9.

6 0

3 years ago

Read 2 more answers

alyssa has 6 quarters, 4 dimes and 5 nickels in her change jar. if she picks 2 at random, what is the probability that she will

rusak2 [61]

The probability of Alyssa picking a nickel and a quarter would be 11/15 (eleven over fifteen)

6/15 plus 5/15 which is 11/15
You get 15 as the denominator because you add 6+4+5=15

I hope u understand.

5 0

3 years ago

Find the value of X in the figure PQ is tangent to O at P￼

Find the value of X in the figure PQ is tangent to O at P