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34kurt
3 years ago
14

Which of the following expressions is equivalent to -2-5?

Mathematics
2 answers:
Vanyuwa [196]3 years ago
6 0
-7 Hope this helps. :)
ch4aika [34]3 years ago
6 0
-2+(-5) is the answer :)
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Riley and Erik have earned a total of 135 tokens to buy items in the school store. The ratio of the number of tokens that Riley
lisabon 2012 [21]

Answer:

<em>Riley has 72 tokens</em>

Step-by-step explanation:

<u>System of Equations </u>

We have two conditions for the tokens Riley and Erik have earned. Let's call x and y to the number of tokens of Riley and Erik respectively. The first condition states that

x+y=135

Solving for y

y=135-x

The second condition is that the ratio of the number of tokens that Riley had to the number of tokens that Erik has is 8 to 7. It's written as

\displaystyle \frac{x}{y}=\frac{8}{7}

Or equivalently

7x=8y

Replacing y from the first equation

7x=8(135-x)

Operating

7x=1080-8x

Simplifying

15x=1080

\boxed{x=72}

Riley has 72 tokens

3 0
3 years ago
Marilyn purchased a book that had a regular price of $19. She used a coupon that reduced the regular price by 15%. Sales tax for
Alika [10]

Answer:

2.80

Step-by-step explanation:

The discount is the regular price times the discount

discount = 19 *15%

discount = 2.85

The new price is the regular price minus the discount

new price = 19-2.85

                 =16.15

Now she has to pay the sales tax

tax = new price * tax rate

tax= 16.15 * 6.5%

     = 16.15 *.065

       =1.05

We add the tax to the new price to get the final price

final price = new price+tax

                = 16.15 +1.05

                =17.20

She pays with a 20 dollar bill

Change = payment - final price

              =20.00 - 17.20

              = 2.80

4 0
3 years ago
SOMEONE ANSWER ASAP PLS PLS TYYY!!
Vladimir79 [104]

Answer:

a b

Step-by-step explanation:

I think it is a and b if am not wrong good luck

4 0
3 years ago
A
LekaFEV [45]

Answer: 31.5 in.

Answer:

the answer is 13 cm

Step-by-step explanation:

3 0
2 years ago
What’s the answer to this equation<br> 4x7=(__x5)+(4x2)
motikmotik

Answer:

4

Step-by-step explanation:

4X7 =28

4X2 =8

28-8 =20/5

=4

5 0
3 years ago
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