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nadya68 [22]
3 years ago
10

John is considering joining an online class music site they charge $15 per month plus 3 dollars per song if John showing how muc

h will it cost to download 10 songs
Mathematics
1 answer:
Yuri [45]3 years ago
8 0

Answer:

It will cost 45 dollars

Step-by-step explanation:

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Johann baked 24 cookies for a picnic with his friends. Of the 10 friends he invited, 7 friends were able to attend the picnic. I
Kamila [148]
It is 3 cookies beacuse it is 7 friends and your self
3 0
3 years ago
Four friends are sharing 6 cups of lemonade. If they share the lemonade equally, how many cups will each friend get?
Ivan

Answer:

1 1/2 cups

Step-by-step explanation:

3 0
3 years ago
Diane has $1.85 in dimes and nickels. She has a total of 24 coins. How many of each kind does she have?
poizon [28]
<span>Let the nickels be x and the dimes be y
 x + y = 24
 5x + 10y = 185
 5x + 5y = 120
 5y = 65
 y=13
 x=11
 Answer: 11 nickels and 5 dimes</span>
3 0
3 years ago
A manufacturer cuts squares from the corners of a rectangular plece of sheet metal that measures 2 inches by 7 inches (see Figur
Vladimir79 [104]

Answer:

The value of x that maximizes the volume enclosed by this box is 0.46 inches

The maximum volume is 3.02 cubic inches

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

The volume of the open-topped box is equal to

V=LWH

where

L=(7-2x)\ in\\W=(2-2x)\ in\\H=x\ in

substitute

V=(7-2x)(2-2x)x

Convert to expanded form

V=(7-2x)(2-2x)x\\V=(14-14x-4x+4x^{2})x\\V=14x-14x^2-4x^2+4x^{3}\\V=4x^{3}-18x^{2} +14x

using a graphing tool

Graph the cubic equation

Remember that

The domain for x is the interval -----> (0,1)

Because

If x>1

then

the width is negative (W=2-2x)

so

The maximum is the point (0.46,3.02)

see the attached figure

therefore

The value of x that maximizes the volume enclosed by this box is 0.46 inches

The maximum volume is 3.02 cubic inches

8 0
3 years ago
What is negative times x plus 7
ValentinkaMS [17]
-.x+7
-x+7=0
-x=-7
x=7...

Not too sure because of the way you wrote the question but this is the interpretation i gave it.
3 0
3 years ago
Read 2 more answers
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