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RoseWind [281]
2 years ago
15

QUICK PLS HELP

Mathematics
1 answer:
Lilit [14]2 years ago
5 0

Answer:

Step-by-step explanation:

60% = 7.2/12

83% = 10/12

He improved by a supposed 23%

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Two equations are given below: a – 3b = 9 a = b – 3 What is the solution to the set of equations in the form (a, b)?
Vilka [71]
A-3b=9
a=b-3

b-3-3b=9
-2b-3=9
-2b=12
2b=-12
b=-6

a=-6-3
a=-9

Solution: (-9,-6)
----
Check: 
-9=-6-3
-9=-9
TRUE


7 0
3 years ago
Read 2 more answers
Simplify these expressions.<br> a. 4x + 7x + (–x)<br> b. –5yz + yz + 2yz
salantis [7]

Answer:A. 10x. B. -2yz

Step-by-step explanation:

A. 4x+7x=11x

11x+(-x) = 11x-1x=10x

B. -5yz+yz=-4yz

-4yz+2yz=-2yz

4 0
3 years ago
So I have zero over five and we are doing something or some form in class and I have no idea what the answer will be
faltersainse [42]

Answer:

0

Step-by-step explanation:

0/5 is 0

Anything divided by zero is zero.

8 0
2 years ago
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ASAP PLS HELP ILL GIVE U A COOKIE
Dvinal [7]

Answer:

x = 11

Step-by-step explanation:

7 0
3 years ago
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What is the average rate of change for the function over the interval (-6,-4)
kozerog [31]

Answer:

i believe it is -4 1/3 i may be wrong

Step-by-step explanation:

difficult, let me see....

1st slope:-4

2nd slope:4/6

3rd slope:-3

-2+4/7-3=-5+4/6=-4 2/6=

-4 1/3

5 0
2 years ago
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