3 years ago

What is a acute angle?

Mathematics

1 answer:

JulijaS [17]3 years ago

6 0

An angle between (not equal to) 0 and 90 degrees

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Hannah can paint a room in 20 hours. Destiny can paint the same room in 12 hours. How long does it take for both Hannah and Dest

KonstantinChe [14]

Hello!

I believe the answer is they can, together, paint the room in 8.9hrs.

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goldenfox [79]

I’m pretty sure the second questions answer is y=3x+2

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the sum of two numbers is 9. if one number is subtracted from the other, the result is 3. find the numbers

irakobra [83]

X, y - the numbers

The sum of the two numbers is 9.
$x+y=9$

If one number is subtracted from the other, the result is 3.
$x-y=3$

Solve the system of equations:
$x+y=9 \\
\underline{x-y=3} \\
x+x=9+3 \\
2x=12 \ \ \ |\div 2 \\
x=6 \\ \\
x+y=9 \\
6+y=9 \ \ \ |-6 \\
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The numbers are 6 and 3.

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3 years ago

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The equation of a parabola is y=x^2–4x+13. Write the equation in vertex form.

Korolek [52]

Answer:

y = (x - 2)² + 9

Step-by-step explanation:

To obtain the equation in vertex form use the method of completing the square.

Add/ subtract ( half the coefficient of the x- term)² to x² - 4x

y = x² + 2(- 2)x + 4 - 4 + 13

= (x - 2)² + 9 ← in vertex form

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Which graph decreases, crosses the y-axis at (0,-7), and then remains constant?

sergey [27]

Answer:

A.Graph B

Step-by-step explanation:

it decreases to a y of (0,-7) and then stays constant at -7

Hope this was helpful

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