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nataly862011 [7]
3 years ago
15

To use the Pythagorean theorem, we need

Mathematics
2 answers:
Ad libitum [116K]3 years ago
5 0

Answer:

sfygyisfislsiyitiyjhjs hjgks6skyk

Step-by-step explanation:

  1. jzsisfyisyistoisisooots
Lerok [7]3 years ago
4 0
I say its the letter c
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Solutions for 2x^2+18x=20, worth a TON, please only 100% answers ! Thank u !
victus00 [196]

Answer:

The solution of the given quadratic equation is 1 and (-10).

Step-by-step explanation:

2x^2+18x=20

x^2+9x=\frac{20}{2}

x^2+9x-10=0

ax^2+bx+c=0

Solving equation by quadratic formula:

Here , a = 1,b = 9, c = (-10)

D=b^2-4ac=(9)^2-4(1)(-10)=121

x=\frac{-b+{\sqrt{D}}}{2a}=\frac{(-9)+\sqrt{121}}{2(1)}=1

x=\frac{-b-{\sqrt{D}}}{2a}=\frac{(-9)-\sqrt{121}}{2(1)}=(-10)

The solution of the given quadratic equation is 1 and (-10).

5 0
3 years ago
A phone is 35 percent off which is now worth 78 pounds what was the original price
Black_prince [1.1K]

Answer:

120 pounds

Step-by-step explanation:

65% of y= 78 pounds

\frac{65}{100} × y = 78 pounds

65y = 78  × 100=7800

y= 7800/65= 120 pounds

7 0
3 years ago
The square on the right is a scaled copy of the square on the left. Identify the scale factor. Express your answer as a whole nu
NeX [460]
Answer: 3x or 300%

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8 0
2 years ago
Y=6mx-2b what is y equal to ?
Maksim231197 [3]
Hello there.

<span>Y=6mx-2b what is y equal to

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3 years ago
The base of a cube is parallel to the horizon. If the cube is cut by a plane to form a cross section, under what circumstance ca
Nikolay [14]
Based on the given question above, the correct answer would be the fourth option. The <span>circumstance that the cross section can be a non-rectangular parallelogram is that, </span><span>when the plane makes an acute angle to the base and intersects three vertical faces. Hope this answers the question. </span>
7 0
3 years ago
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