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3 years ago

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:

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%

Explanation: Divide 54 by 18 to get 3.

8 0

2 years ago

Y=6mx-2b what is y equal to ?

Maksim231197 [3]

Hello there.

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

y=6mx−2b

7 0

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 circumstance that the cross section can be a non-rectangular parallelogram is that, when the plane makes an acute angle to the base and intersects three vertical faces. Hope this answers the question.

7 0

3 years ago

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