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Alona [7]
3 years ago
7

You spend 30.40$ on 4 cds each cd costs the same amount and is on sale 80%

Mathematics
1 answer:
Ugo [173]3 years ago
5 0

idk what you are asking but the cost of the cds on sale is $7.50 the cds not on sale are $37.50

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Out of 83 children, 39 are boys and 55 have been
Crank
Sounds like an id 10 t problem
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3 years ago
The only solution to |r+3|=1 is -2? true or false
ikadub [295]
True! The absolute Value is just the value of the digit. -2+3=-1. The absolute value of -1 is 1. There is no other combination of numbers that would lead to this answer.
7 0
3 years ago
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Determine side x. Round to the nearest unit. 20 9 12 5
tatyana61 [14]

Answer:

12

Step-by-step explanation:

First, you will have to use trigonometry. Since the side of the triangleis the opposite of the angle 53 and the hypotenuse, you will use sin.

Sin 53 degrees = opposite side / hypotenuse side.

The opposite side is x and the hypotenuse side equals 15.

sin53= x/15

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6 0
3 years ago
Expand and Simplify <br> 4( b+3) + 2 (b + 5)
Ipatiy [6.2K]

Answer:

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Step-by-step explanation:

6 0
2 years ago
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What are the lengths of the legs of a right triangle in which one acute angle measures 19° and the hypotenuse is 15 units long?
Deffense [45]
So you have a right angle triangle. You need to use trig for this, as you have two values you can figure out a third.

You know that you have

90 deg. angle
19 deg. angle
Therefor you have 71 deg. angle

sin19 = x/15
15sin19 = x
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Now do Pythagoras c^2-b^2=a^2

a = 14.8

So the sides are 2.2 and 14.8 units long. (If these numbers are wrong tell me and I'll edit answer)

7 0
3 years ago
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