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mario62 [17]
3 years ago
12

I need this question for unit test

Mathematics
1 answer:
krek1111 [17]3 years ago
3 0
The answer is this:
A. (6,3)
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Simplify 3(x+2)-9x+5
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It would be...
-6x+11
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Given: Triangles ABC and DBC are isosceles, m∠BDC = 30°, and m∠ABD = 155°. Find m∠ABC, m∠BAC, and m∠DBC.
just olya [345]
∠BDC=30, so ∠CBD + ∠BCD=180-30=150
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ΔABC is isosceles, so ∠ABC=∠ACB=80
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7 0
3 years ago
The oven tray is 600mm by 500mm. A cake tin is 25cm in diameter. How many cake tins can jenny fit on the oven tray at one time?
MAXImum [283]
We have to convert the measurements
the tray is 60 cm by 50 cm

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5 0
3 years ago
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Find the product <br>(2x+y) (3x-7)​
steposvetlana [31]

Now,

(2x + y) (3x - 7)

2x (3x - 7y) + y (3x - 7)

6x^2 - 14xy + 3xy - 7y

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8 0
3 years ago
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A picture that measures 7 inches
Kipish [7]

Answer:

The width of the frame is 2 inches

Step-by-step explanation:

The given dimensions of the picture = 7 inches by 7 inches

The area of the picture, A₁ = 7 in. × 7 in. = 49 in.²

The area of the given picture and the frame, A₂ = 81 square inches

Let 'w' represent the width of the frame and whereby the picture is a square, we have;

The area of the picture with the frame, A₂ = 81 in.² = (7 + w) × (7 + w)

A₂ = 81 = (7 + w) × (7 + w) = 49 + 14·w + w²

49 + 14·w + w² - 81 = 0

w² + 14·w - 32 = 0

(x + 16)·(x - 2) = 0

∴ x = -16 or x = 2

Given that 'x' is a natural number, we have;

The width of the frame, x = 2 inches.

3 0
2 years ago
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