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nignag [31]
2 years ago
9

2/3 of it is 30 What’s the number?

Mathematics
1 answer:
larisa [96]2 years ago
7 0

Answer:

The number is 45.

Step-by-step explanation:

2/3x=30

x=30/(2/3)

x=(30/1)(3/2)

x=90/2

x=45

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7 0
2 years ago
Q
Luda [366]

Answer:

x = 10

Step-by-step explanation:

Q  is the midpoint of PR: PQ = QR

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2x = 20

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3 0
2 years ago
Joe is recording the percentages he earned on each quiz In his math class. Here are his results for the last 7 quizzes. 72, 82,
Ivenika [448]
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8 0
3 years ago
Need help solving algebraically!
alekssr [168]
We need to account for both x values on either side of the length, and width.
Thus, the length becomes 10 + x + x = 10 + 2x
and the width becomes 5 + x + x = 5 + 2x

For the second question, I'm assuming we don't account for the area that is covered by the garden.
Then we can say that the path is measured by: (5 + 2x)(10 + 2x) - 50, which is the area of the garden itself.

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Expanding the brackets:
50 + 10x + 20x + 4x^{2} - 50 = 54
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2x^{2} + 15x - 27 = 0
2x^{2} - 3x + 18x - 27 = 0
x(2x - 3) + 9(2x - 3) = 0

(x + 9)(2x - 3) = 0
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Since x > 0, then x ≠ -9
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6 0
3 years ago
Suppose y varies directly with x, and y = 8 when x = –6. What direct variation equation relates x and y? What is the value of y
Agata [3.3K]
Given:
y varies directly with x
y = 8 when x = -6

what is the value of y when x = -2?

y = kx

we need to get the constant of variation.
8 = k(-6)
8/-6 = k
4/-3 = k or - 1 1/3

y = -4/3 (-2)
y = (-4*-2) / 3
y = 8 / 3
y = 2 2/3 OR 2.67

The correct answer is Choice B. y = -1.33x ; 2.67
4 0
3 years ago
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