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rjkz [21]
3 years ago
8

3. A positive number is 56 less than its square. Find the number.

Mathematics
1 answer:
raketka [301]3 years ago
4 0

Answer:8

Step-by-step explanation:

X+56=x^2

X^2-x-56=0

X^2-8x+7x-56=0

X(x-8)+7(x-8)=0

(X+7)(x-8)=0

X+7=0 or x-8=0

X=-7 or x=8

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iren [92.7K]

Hello here would be your answers:

mean: 13.6  

mediun: 15.5  

mode: 16

remember it like this

Mean is the average

Mode is the most often number

Range is when you subtract the smallest number from the largest number

Medium is the middle number when you line it up from the greatest to the least.

hope this helps!

7 0
2 years ago
What is the equation of the line that passes through the point -3/5 and has a slope of -2
Gemiola [76]

Answer:

y = -2x - 1

Step-by-step explanation:

y = mx + b

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8 0
3 years ago
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sertanlavr [38]

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Step-by-step explanation:

(2t-7)²-(5t-4)²

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To find the opposite of 25t^2

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Combine 4t^2  and −25t^2  to get −21t^2.

−21t^2−28t+49+40t−16

Combine −28t and 40t to get 12t.

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5 0
3 years ago
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morpeh [17]

Answer:

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Step-by-step explanation:

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3 years ago
Triangle S R Q is shown. Angle S R Q is a right angle. An altitude is drawn from point R to point T on side S Q to form a right
lorasvet [3.4K]

Answer:

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Step-by-step explanation:

7 0
2 years ago
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