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2 years ago

How many real solutions does x^2+8x+20=0 have? 1. 0 2. 1 3. 2

Mathematics

2 answers:

Maru [420]2 years ago

8 0

Answer:

there are 0 real solutions so the answer is number 1

Step-by-step explanation:

kozerog [31]2 years ago

5 0

Answer:

Step-by-step explanation:

I tried solving it

x^2+8x+20=0

1x^2+8x+20=0

I used the quadratic formula, I can't type it here but trust me!

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Simplifying rational expressions

Sonbull [250]

1. $\frac{(c + 8)(c - 8)}{(c - 8)(c + 3)}_,_$
   $\frac{c + 8}{c + 3}_,_$

2. $\frac{n^{2} + 4n - 12}{n^{2} + 2n - 8}_,_$
   $\frac{n^{2} + 6n - 2n - 12}{n^{2} + 4n - 2n - 8}_,_$
   $\frac{n(n) + n(6) - 2(n) - 2(6)}{n(n) + n(4) - 2(n) - 2(4)}_,_$
   $\frac{n(n + 6) - 2(n + 6)}{n(n + 4) - 2(n + 4)}_,_$
   $\frac{(n - 2)(n + 6)}{(n - 2)(n + 4)}_,_$
   $\frac{n + 6}{n + 4}_,_$

3. $\frac{42x^{2}y^{3}}{28x^{3}y}_,_$
   $\frac{3y^{2}}{2x}_,_$

4. $\frac{m^{2} - 3m - 10}{m - 5}_,_$
   $\frac{m^{2} - 5m + 2m - 10}{m - 5}_,_$
   $\frac{m(m) - m(5) + 2(m) - 2(5)}{m - 5}_,_$
   $\frac{m(m - 5) + 2(m - 5)}{m - 5}_,_$
   $\frac{(m + 2)(m - 5)}{m - 5}_,_$
   $m + 2_,_$

3 0

3 years ago

AleksAgata [21]

Answer: 3 • ? = -6

Reasoning: -6/ 3 = -2
3 • -2 = -6

8 0

2 years ago

Find the missing side length to the nearest tenth of a millimeter.

Zarrin [17]

Answer:

A = 4.7

Step-by-step explanation:

To find the missing leg, use this formula:

$a = \sqrt{c^2 - b^2}$

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Have a good day :)

5 0

3 years ago

What is the solution to the inequality 10x + 18 < -2

solong [7]

<h3>Answer: x < -2, choice B</h3>

===========================================

Work Shown:

10x + 18 < -2

10x + 18-18 < -2-18 ... subtract 18 from both sides

10x < -20

10x/10 < -20/10 ... divide both sides by 10

x < -2

3 0

3 years ago

Suppose a normal distribution has a mean of 62 and a standard deviation of

lutik1710 [3]

Answer:

62.5%

Step-by-step explanation:

(56 - 62) / 4 = -1.5 z score = 0.0668

(64 - 62) / 4 = 0.5 z score = 0.6915

0.6915 - 0.0668 = 0.6247

Rounded this becomes 62.5%

7 0

2 years ago