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tiny-mole [99]
3 years ago
7

Use the quadratic formula to solve x2 + 8x + 9 = 0. Estimate irrational solutions to the nearest tenth.

Mathematics
2 answers:
Bess [88]3 years ago
7 0
I'm Pretty Sure It Would Be Answer A. {-6.6, -1.4}
vovangra [49]3 years ago
5 0
Dianna67 is right. The answer is (-6.6, -1.4). If you use the quadratic formula, you will get two solutions:

-4 - sqrt of 7 & sqrt of 7 - 4


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Which fraction belongs in the box to make the expression true? 1/4 < ___< 7/8. A. 1/5. B. 8/9. C. 2/10. D. 10/20
Yuri [45]
The answer is D.

In the expression, the fraction must be larger than 1/4, yet smaller than 7/8.

It can't be A because 1/5 is smaller than 1/4. See below.

1/5 = 4/20

1/4 = 5/20

It also can't be B because 8/9 is larger than 7/8. See below.

8/9 = 64/72

7/8 = 63/72

Lastly, the answer cannot be C because 2/10 is smaller than 1/4.

1/4 = 5/20

2/10 = 4/20

Answer D works because:

10/20 = 2/4 > 1/4

10/20 = 80/160 < 140/160



7 0
3 years ago
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const2013 [10]

Answer:

3x-1

Step-by-step explanation:

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6 0
3 years ago
Which represents the equation 6x+3y = 12 when solved for y?
ra1l [238]

Answer:

Y = -2x + 4

Step-by-step explanation:

6x + 3y = 12

3y = -6x + 12

When dividing both sides of the addition problem get divided by 3, so

y = -2x + 4

4 0
3 years ago
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What is the equation of the circle center (0, 3) and radius 4?
Sunny_sXe [5.5K]

Answer:

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3 0
3 years ago
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Elza [17]
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