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3 years ago

Angle Q measures 30 degrees. If angle Q is rotates 15 degrees, what is the measurement of angle Q?

1 answer:

3 0

Angle Q will have the same measurement as it did before, 30°.
Just because the angle is rotated shouldn't change its angle measure.

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A supplier delivers an order for 20 electric toothbrushes to a store. By accident, three of the electric toothbrushes are defect

krek1111 [17]

Answer:

The probability that the first two electric toothbrushes sold are defective is 0.016.

Step-by-step explanation:

The probability of an event, say E occurring is:

$P (E)=\frac{n(E)}{N}$

Here,

n (E) = favorable outcomes

N = total number of outcomes

Let X = number of defective electric toothbrushes sold.

The number of electric toothbrushes that were delivered to a store is, n = 20.

Number of defective electric toothbrushes is, x = 3.

The number of ways to select two toothbrushes to sell from the 20 toothbrushes is:

${20\choose 2}=\frac{20!}{2!(20-2)!}=\frac{20!}{2!\times 18!}=\frac{20\times 19\times 18!}{2!\times 18!}=190$

The number of ways to select two defective toothbrushes to sell from the 3 defective toothbrushes is:

${3\choose 2}=\frac{3!}{2!(3-2)!}=\frac{3!}{2!\times 1!}=3$

Compute the probability that the first two electric toothbrushes sold are defective as follows:

P (Selling 2 defective toothbrushes) = Favorable outcomes ÷ Total no. of outcomes

$=\frac{3}{190}\\$

$=0.01579\\\approx0.016$

Thus, the probability that the first two electric toothbrushes sold are defective is 0.016.

8 0

3 years ago

it costs $5.50 per hour to rent a pair of ice skates, for up to 2 hours. After 2 hours, the rental cost per hour decreases to $2

laila [671]

$5.50 x 2 is $11.00
$2.50 x 2 is $5.00
$11 plus $5 is $16
it costs $16 to rent a pair of skates for 4 hours

6 0

3 years ago

If your born August, 15, 2001 Then how old would you be now?

spin [16.1K]

Answer:

18 years old you would be

3 0

3 years ago

Read 2 more answers

In the space at the right, draw a triangle : Use an algebraic expression to label the length of each side. Write an expression f

mezya [45]

Not sure I am so sorry I will look more

4 0

4 years ago

How long is the shortest route from Allenville to Greenwood?

likoan [24]

Answer:

I think it is 28.

Step-by-step explanation:

Because if you add Allenville and Ashlards it distance to Ashlards to Greenwoods it equals 28.

19.4 + 8.6 = 28

HOPE THIS HELPS!

7 0

4 years ago