3 years ago

Which of the following is a factor of x2 − 8x + 15?

Mathematics

2 answers:

IrinaVladis [17]3 years ago

5 0

Answer:

x+5

Step-by-step explanation:

edge

brilliants [131]3 years ago

3 0

Answer:

(x−3)(x−5)

Step-by-step explanation:

Let's factor x2−8x+15

x2−8x+15

The middle number is -8 and the last number is 15.

Factoring means we want something like

(x+_)(x+_)

Which numbers go in the blanks?

We need two numbers that...

Add together to get -8

Multiply together to get 15

Can you think of the two numbers?

Try -3 and -5:

-3+-5 = -8

-3*-5 = 15

Fill in the blanks in

(x+_)(x+_)

with -3 and -5 to get...

(x-3)(x-5)

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What is the solution of the system? Use either the substitution method or the elimination method. 4x + 2y = 104x + 2y = 10 x − y

bixtya [17]

4x+2y=10 Equation 1
x-y=13 Equation 2
Solving by substitution method.
Isolate x from equation 2.
x=y+13
Substitute value of x in equation 1
4(y+13)+2y=10
4y+52+2y=10
6y+52=10
6y=-42
y=-7
Now substitute value of y in x=y+13
x=-7+13
x=6

Answer: (6,-7)

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3 years ago

Answer right and I will mark brainiest and give 50 points...

Korolek [52]

Answer:

1.08T/ (1+8/100)T

Step-by-step explanation:

There is an easier way instead of doing 0.08 of t and then adding. You can do 108% of t which immediately gives the answer.

Hope this helps:)

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