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8090 [49]
3 years ago
7

What is the solution of the equation x^2 + 2x -7=0

Mathematics
1 answer:
frosja888 [35]3 years ago
5 0

Answer:

x = -1 + 2 sqr2

or

x = -1 -2 sqr2

Step-by-step explanation:

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Help plz!! 100 points
Fynjy0 [20]

Answer:

t = 0, 1, 4, 8

h = 0, 12, 0 , 18

Step-by-step explanation:

t = 0 + 1 + 3 + 4

/ x1 - 5 (2) x + 4x + 9

h = 0, 12, 0, 18

After 18 seconds the ball attains...

x/3 = 1/4 - 4x 2(7) = 9/2 - 2 / 4 (0)

6 0
2 years ago
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PLZ hurry, 20 points for simple Q: Solve 5x + 1 = 2x2 + 9x.
iragen [17]
The answer is:
 
a: 1 = 2(x^2<span> + 2</span>x<span>) 
b:</span>1 = 2x^2 + 4<span>x
d:</span>3 = 2(x + 1)^2

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8 0
3 years ago
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What is the product of (a+b) (a-b)
VashaNatasha [74]

Answer:

a^{2}+b^{2}

Step-by-step explanation:

(a+b)(a-b)

a^{2}-ab+ab-b^{2}

a^{2} + b^{2}

5 0
3 years ago
A group of friends was working on a student film. They spent $330 on costumes, which was 55% of their total budget. What was the
wariber [46]

Answer:

$600

Step-by-step explanation:

Let "x" represent their total budget for the film.

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Percent spent on costumes = 55%

Therefore:

55% of x = $330

55/100 × x = 330

55x/100 = 330

Cross multiply

55x = 100 × 330

55x = 33,000

Divide both sides by 55

x = 33,000/55

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7 0
2 years ago
What is the coefficient of the xy term in the expression below? <br> 2x + 3y - 4xy - 10
alukav5142 [94]

For this case we have the following expression:

2x + 3y-4xy-10

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3x + 5

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-4 is the term that accompanies the variables xy.

Answer:

-4

3 0
3 years ago
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