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ElenaW [278]
3 years ago
6

Evaluate the expression -10 - -5

Mathematics
1 answer:
EastWind [94]3 years ago
3 0

Answer:

-5

Step-by-step explanation:

a - and - is + -10+5 is -5

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3) A Jewelry artist charges $7.00 for each pair of earrings she sells. in 3 hours, she sells 15 pairs of
Alex787 [66]

Answer: $175

Step-by-step explanation:

$7.00 x 15 = $105.00

$105.00 / 3 hours = $35/hr.

$35 x 5 = $175

6 0
2 years ago
What is the sum of 2x+1 and its opposite?
Masja [62]

Answer:

Zero. The sum of anything and it's opposite is zero, that's how an opposite is defined . In this case, the opposite of 2x+1 is -(2x+1)=-2x-1 by the distributive property . Adding like terms, 2x+-2x+1+-1=0+0=0.

6 0
3 years ago
Read 2 more answers
Solve this quadratic equation using the quadratic formula.<br><br> x2 + 8x - 5 = 0
jasenka [17]
X^2 + 8x - 5 = 0
a = 1, b = 8, c = -5
x = ( - 8 + - sqrt(64 - 4*1*-5))/2
x = ( -8 + - sqrt(64+20))/2
x = ( -8 + - sqrt (84))/2
x = ( - 8 + - 2sqrt21))/2
x = -4 + - sqrt21
7 0
3 years ago
PLEASE ANYONE HELP!!!!
meriva
The output is 1
How I helped :D
3 0
3 years ago
You plant a tree that is 36 inches tall. After one year, the tree is 4343 inches tall. Which expression describes the percent of
Lera25 [3.4K]
Let x represent the percent of increase in the tree's height and let n represent the number of years.

x= n (36/4343)

Hope this helps!
3 0
3 years ago
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