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Mkey [24]
3 years ago
5

Solve the following equation by completing the square: 2x^2 – 2x – 4 = 0

Mathematics
1 answer:
Rus_ich [418]3 years ago
6 0

Answer:

the answer is B

Step-by-step explanation:

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Which set of side lengths can be used to form a right triangle
leva [86]

Answer:

14, 48, 50

Step-by-step explanation:

To check which set of side length can be used to form a right triangle we use pythagorean theorem

c^2 = a^2 + b^2

biggest side (hypotenuse is c^2)

(a) 14, 48, 50

50^2 = 14^2 + 48^2

2500= 196+2304

2500= 2500 that is  true

(b) 30, 40, 60

60^2 = 30^2 + 40^2

3600= 900+ 1600

3600= 2500  that is false

(c) 14, 50, 60

60^2 = 14^2 + 50^2

3600= 196+2500

2500= 2196    that is false

(d)  10, 24,28

28^2 = 10^2 + 24^2

784=100+576

784=676    that is false

4 0
3 years ago
Write the equation of the line that passes through the points (4,9) and (9,1). Put
Sonbull [250]

Answer:

y=-8/5x+77/5

Step-by-step explanation:

The equation of line that passes through the points (4, 9) and (9, 1) is y=-8/5x+77/5. Hope it helps!

7 0
3 years ago
Another quadratic formula and the discriminant problem that I am stuck on. the answer is {2, 1/2}
Alina [70]

Answer:

See explanation

Step-by-step explanation:

2b^2-5b+2=0

b=\dfrac{5\pm\sqrt{25-16}}{4}=\dfrac{5\pm3}{4}=\dfrac{8}{4}, \dfrac{2}{4}=2,1/2

Hope this helps!

7 0
3 years ago
Lana wants to buy a hamster. The hamster is on sale for 19% off. Lana has a coupon as well. The coupon is for 15% off. What is t
son4ous [18]

Answer:

$42 - 19 = 23 - 15 = $8

Step-by-step explanation:

6 0
2 years ago
((5 - -5) x (9 + 3) /4)-10=<br><br> enter your answer in the box<br><br><br> 66 points pls help
Sergio039 [100]

Answer:

uhtvdbwiethweieigwhijgiwhgjwogw

Step-by-step explanation:

wdgqgsggdggd

7 0
2 years ago
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