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nata0808 [166]
3 years ago
6

Which equation can be used to solve by completing the square?

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
3 0

Answer:

C

Step-by-step explanation:

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Chen's report will take 8 1/3 hours to complete. He has worked 3/5 of that time doing research. How long has he worked?
Sergeu [11.5K]
He has worked for 5 hours. 8 and 1/3 is equal to 24/3. Multiply that by 3/5 to get 75/15 which simplifies to 5.
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Anna11 [10]

Answer:

first one 5 - 30

second one 21 : 7

third one 16 : 32

Step-by-step explanation:

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4 years ago
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1. A hammock is suspended between two trees. The curve the hammock makes can be modelled by the equation, y = 0.2x2 – 0.4x – 0.6
Rina8888 [55]

Answer:

Step-by-step explanation:

Given that:

The modeled equation y = 0.2x² - 0.4x - 0.6

To find x- intercepts

y = 0.2x² - 0.4x - 0.6

y = 0.2(x² - 2x - 3)

y = 0.2(x - 3)(x + 1)

Suppose the upward parabola cuts x axis at x = 3 and x = - 1

Then, the length of the intercepts will be = 3 -(-1)

=4

We can say that the trees will be 4 unit apart.

To find y-intercepts;

y = 0.2(0)² - 0.4(0) -0.6

y = -0.6 meters

8 0
3 years ago
A classroom has a length of 20ft. And width of 30ft. The flooring Is to be replaced by tiles. If each tile has a length of 24in.
umka21 [38]
Area of the floor is 60ft^2. (20x30=60ft)
Each tile is 6ft^2 in area.
24in = 2ft
36in = 3ft

60/6= 10 tiles 
3 0
4 years ago
CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM​
Zielflug [23.3K]

Answer:

consistent

Step-by-step explanation:

The two equations have different slopes, so they intersect at one point. That point is the solution. That makes this system of equations consistent.

4 0
4 years ago
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