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Mrac [35]
3 years ago
10

Find the number of ways to listen to four CDs from a selection of eight CDs.

Mathematics
1 answer:
anzhelika [568]3 years ago
6 0
Answer:

<span>8<span>C4</span>=<span><span>8!</span><span><span>(8−4)</span>!4!</span></span>=70</span>

Explanation:

This is equivalent to choosing 4 from an available 8 and is hence the combination

<span>8<span>C4</span>=<span><span>8!</span><span><span>(8−4)</span>!4!</span></span>=<span>70</span></span>
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Two members of the Math Competition Team solve 13 problems in 1 hour. Assume all team members solve problems at the same rate. H
mylen [45]

14 because 2 people=13 problems in an hour

91/13=7

7times 2 is 14

14 IS YOUR ANSER PLS MARK ME BRAINLIEST :D

4 0
4 years ago
Which expression is equal to 97/33??
balandron [24]

Answer:

2 31/33

Step-by-step explanation:

this is a IMPROPER FRACTION once the absolute value of the top number or numerator [97] is greater than absolute value of numerator is greater than denominator[33] so the equivalent fraction is a MIXED NUMBER which is made up of a whole number [2] ans proper fraction [31/33]

8 0
3 years ago
Please solve the problem below.
Liono4ka [1.6K]

Answer:

?=14

Step-by-step explanation:

12+5=17

8+8=16

8+4х8=40

4+6х4=28

9-5=4

9-12+5+8+4=14

5 0
3 years ago
Marisol is painting on a piece of canvas that has and area of 180 square inches. The length of the painting is 1 1/4 times the w
Ivahew [28]
Formula for the rectangle area is a * b, In this case we know that:

a * b = 180
a (width) = unknown
b (length) = 1 1/4a

We can write it down as:

a * 1 1/4 * a = 180
a² * 1 1/4 = 180                   / ÷ 1 1/4 (both sides)
a² = 144                             / square root (both sides)
a = 12

Doublecheck:

a = 12
b = 1 1/4 * 12 = 15
a * b = 12 * 15 = 180 (so it's correct)

Answer: The dimensions of the painting are <u>12 x 15 inches</u>.
8 0
3 years ago
Find the equation of the circle whose center and radius are given. Center:(-2,-5) Radius=1
maxonik [38]

Answer:

( x+2)^2 + (y+5)^2 = 1

Step-by-step explanation:

The equation of a circle can be written in the form

( x-h)^2 + (y-k)^2 = r^2

where ( h,k) is the center and r is the radius

( x- -2)^2 + (y- -5)^2 = 1^2

( x+2)^2 + (y+5)^2 = 1

8 0
3 years ago
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