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Firdavs [7]
3 years ago
8

Factor x2 − 7x + 8. (x + 8)(x − 1) Prime (x − 8)(x − 1) (x + 8)(x + 1)

Mathematics
2 answers:
evablogger [386]3 years ago
5 0

Answer:

Prime

Step-by-step explanation:

The roots are irrational. (If they were rational, they would be factors of 8.) As a consequence, the expression has no factoring in integers, making it prime.

_____

Roots are (7±√(7²-32))/2 = 3.5±√4.25.

skad [1K]3 years ago
3 0

Answer:

Prime

Step-by-step explanation:

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Dawn has to pay 10,990 for her college dorm room and tuition each year. About how much money does dawn spend the first 2 years o
IceJOKER [234]

Dawn has to pay 10,990 for her college dorm room and tuition each year. About how much money does dawn spend the first 2 years of college

Answer: The amount of money Dawn has to pay for 1 year = 10,990

Therefore, the amount of money Dawn has to pay for first 2 years of college is:

2 \times 10,990 = 21,980


8 0
3 years ago
Gianna earned $466.90 at her job when she worked for 23 hours. How much money did she earn each hour?
Galina-37 [17]

Answer:

About $20.30

Step-by-step explanation:

$466.90 divided by 23.

5 0
3 years ago
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If the measure of one interior angle of a regular polygon is 144 degrees, find
Dmitrij [34]

There are 10 sides becuase the equation set up is \frac{180(n-2)}{n} and equal it to 144.

Solve for n and get 10


6 0
3 years ago
The school that Kathryn goes to is selling tickets to the annual talent show. On the first day of ticket sales the school sold 1
Kobotan [32]

Answer:

Step-by-step explanation:

a+s=14

a=14-s

a+8s=56, using a from above in this equation gives

14-s+8s=56

14+7s=56

7s=42

s=6

a=14-s

a=14-6=8

So student tickets cost $6 and adult tickets cost $8.

5 0
3 years ago
What is the greatest common factor (GCF) of the numerator and denominator
ad-work [718]

Answer:

C

Step-by-step explanation:

x²+2x-15 = x²-3x+5x-15 = x(x-3)+5(x-3)=(x+5)(x-3)

or delta:

∆=2²-4*1*(-15)=4+60=64

√∆=8

x1 = (-2+8)/2 = 3

x2=(-2-8)/2=-5

and 4x+20 = 4(x+5)

The same is (x+5), so it is GCF. answer C

4 0
3 years ago
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