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Nata [24]
3 years ago
8

How many questions need to be answered correctly to receive a score of 80%?dhow your work

Mathematics
1 answer:
dangina [55]3 years ago
6 0
It depends on how many questions there are
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Suppose you want to solve the equation 2a + 2b= 2a, where a and b are nonzero real numbers. Describe the solution to this equati
Anna11 [10]
This equation has no solution where 'a' and 'b'
are both non-zero real numbers.

You said                                 2a + 2b = 2a

Subtract 2a from each side:         2b = 0

'b' must be zero.

And it doesn't matter what the value of 'a' is.
As long as b=0, 'a' can be any number.
5 0
3 years ago
You are having a pizza-making party. You will need 6 ounces of dough and 4 ounces of sauce for each person at the party (includi
Len [333]

Answer:

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7 0
3 years ago
Which equation does NOT belong with the other 3? Explain your reasoning.
zysi [14]
X-9=-13 because the 9 doesn't do with any of the others after the variable
8 0
3 years ago
Read 2 more answers
What is the answer 5i/(2+3i)^2
Nataly_w [17]
Simplify the following:5 i/(3 i + 2)^2
(3 i + 2)^2 = 4 + 6 i + 6 i - 9 = -5 + 12 i:(5 i)/12 i - 5
Multiply numerator and denominator of (5 i)/(12 i - 5) by 5 + 12 i:(5 i (12 i + 5))/((12 i - 5) (12 i + 5))
(12 i - 5) (12 i + 5) = -5×5 - 5×12 i + 12 i×5 + 12 i×12 i = -25 - 60 i + 60 i - 144 = -169:(5 i (12 i + 5))/-169
i (12 i + 5) = -12 + 5 i:(5 5 i - 12)/(-169)
Multiply numerator and denominator of (5 (5 i - 12))/(-169) by -1:Answer: (-5 (5 i - 12))/169
3 0
3 years ago
Can someone help pls?
Fynjy0 [20]
(-5,-7) you always have to start with the x axis which will give you the x coordinate. The y axis gives you -7 the x gives -5. (x,y)
6 0
3 years ago
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