Sally had 210 dollars to spend on 6 books.After buying them she had 12 dollars how much did each book cost

1 answer:

7 0

Hi there!

To solve this, we need to subtract the remainder of 12 from the total amount spent and divide that by 6.

210 - 12 = 198

198 / 6 = 33

So, each book cost 33 dollars.

Hope this helps!

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Someone please answer 2.1 ( x + 5 ) = 7

tatuchka [14]

Since we have the 2.1 next to the parenthesis, we need to first distribute.

2.1 * x & 2.1 * 5

2.1x + 10.5

Then we take that and add the equals seven to the problem to move onto the next step.

2.1x + 10.5 = 7

We must get the 2.1x alone, therefore subtracting the 10.5 as it will also be subtracted on the other side as well.

2.1x + 10.5 = 7
- 10.5 -10.5

2.1x = -3.5

To get the x alone, we must divide both sides by 2.1, therefore removing the 2.1 from the x.

2.1x = -3.5
/2.1 /2.1

x = 1.66666666667

Hope this helped!

- Kat

5 0

3 years ago

Read 2 more answers

Suppose that E and F are two events and that N (E and F) = 260 and N(E) = 630. What is P(F|E)?

Sveta_85 [38]

Answer: 0.4127

Step-by-step explanation:

The probability formula to find p(F/E):

p(F/E)= N(E n F) / N(E)

p(F/E)= 260 / 630

p(F/E) = 0.4127

5 0