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alexandr1967 [171]
3 years ago
11

21 is what percentage of 30?

Mathematics
2 answers:
I am Lyosha [343]3 years ago
7 0

Answer:

.7

Step-by-step explanation:

21/30=.7

Trava [24]3 years ago
6 0

Answer:

.7

Step-by-step explanation:

30/.7 is 21

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3 years ago
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raketka [301]

Step-by-step explanation:

cannot be written as a fraction so its irrational

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Find the solution to the system of equations-2 + 2y = -4 3x + 3y = -18
AfilCa [17]

Answer:

\boxed{x = -2~~and~~ y = -4}

Step-by-step explanation:

-2x + 2y = -4 (times 3) -6x + 6y = -12

3x + 3y = -18 (times 2) 6x + 6y = -36

.

-6x + 6y = -12

<u>6x + 6y = -36 </u>+

12y = -48

y = \frac{-48}{12}

y = -4

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Substitute the value of y to the one of equations

-2x + 2(-4) = -4

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4 0
3 years ago
Read 2 more answers
-2.3 + 1.6y = 6.1 solve for y please help fast!!
Elan Coil [88]

Answer:

The answer is y = 5.25

Step-by-step explanation:

-2.3 + 1.6y = 6.1

1.6y = 6.1 + 2.3

1.6y = 8.4

y = 8.4/1.6

y = 5.25

8 0
3 years ago
Let f(x) = -2x -2. The graph of g(x) = f(x) + k is shown below. Identify the value of k.
AveGali [126]

k should be 1, Check by calculating the x values for f(x) and confronting them with g(x)

7 0
3 years ago
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