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3 years ago

NEED HELP ASAP PLSSSSS

Mathematics

1 answer:

Stolb23 [73]3 years ago

6 0

-6: -8
-3: -7
0: -6
3: -5
6: -4
9: -3
if your solving for y these are it ! hope this helps!

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Find the product.<br> (2a^2+b) (3a-3b)<br> Enter the correct answer.

Leona [35]

<h3>Answer: 6a^3-6a^2b+3ab-3b^2</h3>

=============================================

Work Shown:

(2a^2+b)(3a-3b)

c(3a-3b) ..... let c = 2a^2+b

3ac-3bc .... distribute

3a(c)-3b(c)

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You could also use the FOIL rule to get the same result. The box method is a visual way to keep track of the terms.

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All the fourth-graders in a certain elementary school took a standardized test. A total of 81% of the students were found to be

Dvinal [7]

Answer:

The probability that a student is proficient in mathematics, but not in reading is, 0.10.

The probability that a student is proficient in reading, but not in mathematics is, 0.17

Step-by-step explanation:

Let's define the events:

L: The student is proficient in reading

M: The student is proficient in math

The probabilities are given by:

$P (L) = 0.81\\P (M) = 0.74\\P (L\bigcap M) = 0.64$

$P (M\bigcap L^c) = P (M) - P (M\bigcap L) = 0.74 - 0.64 = 0.1\\P (M^c\bigcap L) = P (L) - P (M\bigcap L) = 0.81 - 0.64 = 0.17$

The probability that a student is proficient in mathematics, but not in reading is, 0.10.

The probability that a student is proficient in reading, but not in mathematics is, 0.17

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