3 years ago

Discriminant of 2x2 - 4x + 7 = 0

Mathematics

1 answer:

nika2105 [10]3 years ago

3 0

Answer:

Step-by-step explanation:

The discriminant of the quadratic equation 2x2+4x-7=0 is 1

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Help with this one? Please

netineya [11]

Answer:

x = 40

Step-by-step explanation:

The figure shows two similar triangles. Thus, the side lengths of similar triangles are proportional to each other. Therefore:

$\frac{24}{24 - 15} = \frac{x}{x - 25}$

$\frac{24}{9} = \frac{x}{x - 25}$

Cross multiply

$24(x - 25) = 9(x)$

$24x - 600 = 9x$

Subtract 24x from each side

$- 600 = 9x - 24x$

$- 600 = -15x$

Divide both sides by -15

$40 = x$

x = 40

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3 years ago

60-points,5-star ratting,A thanks and MARKED AS BRANLIEST!

vitfil [10]

Answer:

Step-by-step explanation:

31. D 6.5+8 = 14.5 > 12

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3 years ago

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Determine between which two integers the following irrational number lie square root 4 square root 21

Taya2010 [7]

Answer:

Step-by-step explanation:

that what i got

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3 years ago

Malia runs 5 miles in 1 hour. How many miles does she run in half an hour? In 2 1/2 hours?

Olegator [25]

1/2 hr* (5 miles/ 1 hr)= 2.5 miles.

2 1/2 hrs* (5 miles/ 1 hr)= 12.5 miles.

Malia runs 2.5 miles and 12.5 miles in 1/2 hr and 2 1/2 hrs respectively.

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3 years ago

1=5. 2=10 3=15. 4=10 5=x. what does x equally

SCORPION-xisa [38]

The answer for this question would be and is 20.

8 0

4 years ago