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4 years ago

A CD makes 58 1/2 revolutions in 3/4 min.

2 answers:

8 0

The most important thing in this problem is understanding and then dividing the given units properly. The first thing that is given is that the CD makes 58 1/2 revolutions in 3/4 minutes. We have to first simplify the number of revolutions made by the CD. This will make the problem in hand very easy.
Number of revolutions made by the CD = 58 1/2
   = 117/2
Then
The unit rate = (117/2)/(3/4)
   = (117 * 4)/(2 * 3)
   = (117 * 2)/3
   = 39 * 2
   78
So the unit rate is 78 revolutions per minute.

murzikaleks [220]4 years ago

5 0

78 revolutions per minute 58.5 I divided it by 3 to get 19.5 Then multiplied 19.5 by 4 to get the amount of rotations in a minute

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Manny wants to cover the windows in his home with either wood blinds or curtains. He has 35 windows that he would like to cover,

stepladder [879]

Answer:

$x + y \leq 35\\\\100x + 60y\leq2100\\\\x\geq 0\\\\y\geq 0$

Step-by-step explanation:

Call x the amount of blinds that Manny buys.

Let's call and the amount of curtains that Manny buys

There are only 35 windows, so the number of curtains and windows can not be greater than 35.

$x + y \leq 35\\x\geq 0\\y\geq 0$

Manny can only spend $ 2100

Then we can represent this by an inequality in the following way.

$100x \leq 2100$

and

$60y\leq 2100$

We can write this as a single inequality:

$100x +60y \leq2100$

Finally, the set of inequalities to model this problem is:

$x + y \leq 35\\\\100x + 60y\leq2100\\\\x\geq 0\\\\y\geq 0$

5 0

4 years ago

All of the girls are Danielle's cabin at camp are the same age. Their counselor is 3 times their age. Danielle's age and her cou

FromTheMoon [43]

Answer:

see the explanation

Step-by-step explanation:

Let

D -----> Danielle's age

C -----> Counselor's age

we know that

$C=3D$ ----> equation A

$D+C=28$ ----> equation B

substitute

equation A in equation B

$D+3D=28$ ----> equation that can be used to find Danielle's age

Solve for D

$4D=28$

$D=7$

Find the value of C

$C=3D$ ----> equation that can be used to find Counselor's age

substitute the value of D

$C=3(7)=21$

therefore

Danielle's age is 7 and Counselor's age is 21

8 0

3 years ago

Got lots of questions I need help on. Algreba 1

monitta

A, B, C!

Lol hope this helps

3 0

3 years ago

The tables show linear relationships between x and y. Write an equation in slope-intercept form for each relationship.

Alenkinab [10]

The first thing you need to do is calculate the slope. pick 2 of the ordered pairs.

i'll use (1, 4) and (0, 6)

m = (6 - 4)/(0 - 1)
m = (2)/(-1)
m = -2

so the slope is -2. slope intercept form is written as y = mx + b and you have one part of that equation

y = -2x + b

to find b, use one of the selected points. i'll use (0, 6).

(6) = -2(0) + b
6 = b
b = 6

therefore:

y = -2x + 6

6 0

3 years ago

Peter created a presentation for his boss showing the average number of copies the accounting department makes during a one week

Sergeeva-Olga [200]

The correct answer is:

A box and whisker plot

Explanation:

A box and whisker plot, or a box plot, displays what is called the "five number summary." This includes:

Median; LQ (lower quartile, or the median of the lower half of data); UQ (upper quartile, or the median of the upper half of data); lowest value; and highest value.

This will show the spread of data, and the mean can easily be added to this diagram.

7 0

3 years ago