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Law Incorporation [45]
3 years ago
8

What is the sum of -7 and its additive inverse?

Mathematics
2 answers:
mote1985 [20]3 years ago
8 0

Answer:

0

Step-by-step explanation:

An additive inverse is any number that adds to a certain number to make the value 0. For example, 6 has an additive inverse of -6. Therefore, -7 has an additive inverse of 7 because 7-7 (or -7+7)=0

FinnZ [79.3K]3 years ago
8 0

Answer:

0

Step-by-step explanation:

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Hey sisters!

Step-by-step explanation:

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3 years ago
Lucy's savings account has 35% more money than her sister Edy's. Together, the girls have saved a total of $206.80. How much mon
Ber [7]
X=Lucy´s money
y=Edy´s money
we can suggest this system of equations:
x=y+(35/100)y    ⇒x=135y/100
x+y=206.8

solve by substitution method. 
(135y/100)+y=206.8
Least common multiple=100
135y+100y=20680
235y=20680
y=20680/235=88

then:
x=135y/100=135(88)/100=118.8

Answer:
Lucy´s money=$118.8
Edy´s money=$88

To check:
Together, the girls have   saved a total of $118.8+$88=$206.8
Lucy´s savings account has: $88+(35/100)$88=$118.8, 35% more monty than Edy´s. account.     .                                                                                                                            
7 0
3 years ago
audrey has 32 dimes and quarters in her piggy bank with a total value of $6.50. how many of the coins are dimes and how many are
AfilCa [17]
22 quarters= $5.50
10 dimes= $1.00

$5.50 + $1.00 = $6.50
I just did trial and error. I started with 20 quarters and made changes until it worked.

4 0
3 years ago
Find the slope.<br> Find the slope
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Answer:

The slope is 1

Step-by-step explanation:

for every 1 unit crossed in the X value, 1 is crossed the Y value, which is

1/1 or 1

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2 years ago
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