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kow [346]
3 years ago
8

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

Mathematics
2 answers:
Maru [420]3 years ago
8 0

Answer:

there are 0 real solutions so the answer is number 1

Step-by-step explanation:

kozerog [31]3 years ago
5 0

Answer:

0

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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Julio is paid 1.4 times his normal hourly rate for each hour he works over 31 hours in a week. Last week he
dalvyx [7]
Ahaha hahahahasbebejdsuddjd
5 0
3 years ago
What is the quotient of (x3 3x2 5x 3) Ă· (x 1)? x2 4x 9 x2 2x x2 2x 3 x2 3x 8.
Rina8888 [55]

The quotient of expression is \rm x^2+2x+3.

Given that,

Expression; \rm\dfrac{ (x^3 + 3x^2 + 5x + 3) }{ (x + 1)}

We have to determine,

The quotient of expression?

According to the question,

To determine the quotient of expression following all the steps given below.

Simplify the expression,

\rm =\dfrac{ (x^3 + 3x^2 + 5x + 3) }{ (x + 1)}\\\\= \dfrac{ (x^3 + 2x^2 + 3x + x^2+2x+ 3) }{ (x + 1)}\\\\ = \dfrac{ x(x^2+ 2x+ 3) + 1(x^2+2x+ 3) }{ (x + 1)}\\=  \dfrac{ (x^2+ 2x+ 3) (x+1) }{ (x + 1)}\\\\= x^2+2x+3

Hence, The required quotient of expression is \rm x^2+2x+3.

For more details refer to the link given below.

brainly.com/question/12895249

4 0
2 years ago
Suppose 300 nursing students took a certification test that is worth 100 points.
Alja [10]

Answer:

225 students scored 65 or better and 75 students scored 88 or better.

Step-by-step explanation:

We are given that The five-number summary for the scores of 300 nursing students are given :

Minimum = 40

Q_1 = 65

Median = 82

Q_3 = 88

Maximum = 100

Q_1 is the first quartile and is the median of the lower half of the data set. 25% of the numbers in the data set lie below Q_1 and about 75% lie above Q_1 .

Q_3 is the third quartile and is the median of the upper half of the data set. 75% of the numbers in the data set lie belowQ_3 and about 25% lie above Q_3

i) .About how many students scored 65 or better?

Q_1 = 65

Since we know that 75% lie above Q_1 .

So, Number of students  scored 65 or better = 75\% \times 300 = \frac{75}{100} \times 300 =225

ii)About how many students scored 88 or better?

Q_3 = 88

Since we know that 25% lie above Q_3

So, Number of students scored 88 or better = 25\% \times 300 = \frac{25}{100} \times 300 =75

Hence 225 students scored 65 or better and 75 students scored 88 or better.

7 0
4 years ago
Can anyone help me answer this?!?!
Rainbow [258]

angle BCA should be the same as angle CAD -> 20°

5 0
3 years ago
Y = 3x + 10<br>Y = 2x - 8<br>find the substitution <br>Show your work please ill give brainlyest ​
Nina [5.8K]

Answer:

x = -18, Y = -44

Step-by-step explanation:

Since Y = 2x - 8, we can substitute that into the first equation:

2x - 8 = 3x + 10

3x - 2x = -8 - 10

x = -18

Now we plug x = -18 back into the second equation:

Y = 2(-18) - 8

Y = -36 - 8

Y = -44

7 0
2 years ago
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