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Dahasolnce [82]
3 years ago
8

During a sale at the electronics store, movies sold for $3 and CDs sold for $2.50. Isla spent $19 and bought a total of 7 movies

and CDs. How many of each did she buy?
Mathematics
1 answer:
Vinvika [58]3 years ago
3 0
She bought 4 Movies and 3 CDs so she spend $19.50 bc 3+3+3+3=12 so 2.50+2.50+2.50=7.50 so 7.50+12=19.50
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Please help ASAP thank u
Pepsi [2]

Answer:

1. B

Step-by-step explanation:

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A sunflower grows to be 200cm tall. After four weeks, it was 30% of this height. How tall
hichkok12 [17]

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60cm

Step-by-step explanation:

200*3/10=20*3=60

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2 years ago
The square root of a number is 2k. what is half of the number?​
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3 years ago
3 numbers are in arithmetic progression their sum is15 and their product is 80 determine the 3 numbers
Mashcka [7]

Answer:

2, 5, 8

Step-by-step explanation:

For starters, let us assume that the numbers are x-d, x, and x+d.

Where d is the common difference between terms.

This mean that we can say, from the question

x-d + x + x+d = 15

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x = 5,

This means that the terms are 5, 5-d and 5+d.

On the other hand,

(5-d) * 5 * (5+d) = 80

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25 - d² = 16

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6 0
3 years ago
If someone could please walk me through on how to answer this.
Elis [28]

To isolate c means to separate it completely on one side of the equals sign.


To isolate variables, you apply opposite operations.


In E = mc², m and c are being multiplied together. To separate them, you divide by the variable you want to get rid of. However, you must do this to both sides of the equation always. Whatever you do to one side of the equation you must do to the other side as well. This is so the equation remains true.


Since we want to isolate c, we'll start by dividing both sides by m.


E = mc²

E/m = mc²/m

E/m = c²  --  The m's cancel as 1


Now we have c squared. The opposite of squaring something is taking its square root. Take the square root of each side.


E/m = c²

√(E/m) = √(c²)

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And you've isolated c!


Answer:

c = √(E/m)

3 0
3 years ago
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