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Mashcka [7]
3 years ago
9

Alecia earned 48 points on the first quiz and 45 points on the second quiz. What's the percent decrease in her quiz score ?

Mathematics
2 answers:
elixir [45]3 years ago
7 0

Answer:

is the 48 and 45 points out of 100?

dimulka [17.4K]3 years ago
6 0

Answer:

93%is the answer to this question its 93% percent (tell me if its wrong)

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Solve the equation for the specified variable.<br> T= BA-9, for B<br> What does b=
NARA [144]

9514 1404 393

Answer:

  B=\dfrac{T+9}{A}

Step-by-step explanation:

Add 9 to both sides of the equation, and divide by the coefficient of B.

  T = BA -9

  T +9 = BA

  (T +9)/A = B

We can rewrite that with B on the left:

  B = (T +9)/A

4 0
3 years ago
Shen needs to memorize words on a vocabulary list for german class. he has memorized 12 of the words, which is two-thirds of the
katrin [286]
2/3 of the list = 12

2/3x = 12
x = 12 / (2/3)
x = 12 * 3/2
x = 36/2
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3 years ago
Michael sold 23 of his CDs and purchased 16 more.
aleksley [76]
25-16=9
9+23=32
He had 32 CDs to begin with
6 0
3 years ago
A line contains the points (−26, −37)(−26, −37) and (−32, −61)(−32, −61) . What is the slope of the line in simplified form?
Rus_ich [418]
Slope = (y2 - y1)/(x2 - x1) = (-61 - (-37))/(-32 - (-26)) = (-61 + 37)/(-32 + 26) = -24/-6 = 4

Therefore, slope = 4
3 0
3 years ago
Determine the number of solutions for each quadratic.
DiKsa [7]

Answer:

1. Technically 2, but might be 0 in your teacher's opinion.

2. 1

Step-by-step explanation:

Solving problem one.

So I don't know if you have learned about imaginary numbers, but if you have, then you would end up with two answers if you plugged in the quadratic formula.

If you haven't learned about imaginary numbers, then I would say your best option would be to write 'No real solution' since there are technically 2 solutions.

Solving problem two.

Turns out this quadratic has a special property and it's actually a square of one equation. You can find out by just factoring the equation.

It's (3x-2)^2.  Since it's squared, that means that only 2/3 would work as x in this equation.

4 0
3 years ago
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