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denis23 [38]
3 years ago
15

What will the image Q’ be after reflection on the y-axis, if Q(2, 5)

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
4 0

Answer:

Q'(-2 , 5)

Step-by-step explanation:

Note that:

1) When you are reflecting over the x-axis, you are changing the sign for the y.

2) When you are reflecting over the y-axis, you are changing the sign for the x.

In this case, you are reflecting over the y-axis. Change the sign of the x:

Q(2 , 5) ⇒ Q'(-2 , 5)

Q'(-2 , 5) is your answer.

~

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11

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Ross chose a card at random from a deck of 52 cards. Ross replaced the card and then chose a second card. What is the probabilit
DaniilM [7]

Answer:

\frac{1}{208}

Step-by-step explanation:

We have been given that Ross chose a card at random from a deck of 52 cards. Ross replaced the card and then chose a second card.

Let us find probability of getting a club.

\text{ Probability of getting a club}=\frac{13}{52} =\frac{1}{4}

Now let us find probability of getting the ace of spades.

\text{ Probability of getting ace of spades}=\frac{1}{52}

Now let us multiply these to find probability of getting a club and ace of spades.      

\text{ Probability of getting a club and then ace of spades}=\frac{1}{4}*\frac{1}{52}=\frac{1}{208}

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8 0
4 years ago
16.2=2.7(h+1) solve for h
Rom4ik [11]

Step-by-step explanation:

16.2 = 2.7(h+1)

2.7(h+1) = 16.2

(h+1) = 16.2 ÷ 2.7

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5 0
4 years ago
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12.
harina [27]

Answer:

h = 5.705m

Step-by-step explanation:

Volume of a cylinder

V = πr^2h

V - volume of the cylinder

π - pie

r - radius of the cylinder

h - height of the cylinder

Given :

V = 363 cubic meters

d = 9m

h = ?m

d = 2r

d - diameter

r - radius

r = d/2

r = 9/2

π- 3.142

Insert the values into the formula of volume of cylinder

V = πr^2h

363 = 3.142 * (9/2)^2 * h

363 = 3.142 * 81/4 * h

363 = 63.6255h

Divide both sides by 63.6255 to get the value of h

363/63.6255 = 63.6255h/63.6255

5.705 = h

h = 5.705m

8 0
3 years ago
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