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rosijanka [135]
3 years ago
6

F(x)=x^2-8x+7 in factored form​

Mathematics
1 answer:
Karolina [17]3 years ago
7 0

Answer:

(x-1)(x-7)

Step-by-step explanation:

To factor the equation, find two binomials which multiply to a quadratic. The quadratic's factors are found by finding two numbers that multiply to 7 and add to -8.

-1 and -7 multiply to 7 and add to -8.

(x-1)(x-7)

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If 8x−4y=20 and 4x−8y=4, what is the value of x−y?
____ [38]

Answer:

Step-by-step explanation:

Solve the system:

8x−4y=20

4x−8y=4

Reduce the first equation by dividing every term by -2:

-4x + 2y = -10

and then combine this result with the second equation:

4x−8y=4

-4x + 2y = -10

--------------------

      -6y = -6, and so y = 1.  

According to the first equation, if y = 1, then 4x - 8 = 4, or x = 3.

Then x = 3 and y = 1.

So, finally, x - y = 3 - 1 = 2

5 0
3 years ago
The measure of an angle is 68°. what is the measure of a supplementary angle?
sleet_krkn [62]
Two supplementary angles are angles that add up to 180°, so just subtract 68 from 180 (it would give you 112°)
5 0
3 years ago
What are the zeros of x(x + 2)(x - 7)
Dmitrij [34]
X = 0
X = -2
X = 7

Hope that helped;)
6 0
3 years ago
Solve the system (picture) by substitution
Westkost [7]
Try out all of your options by filling the the x and y values from each option. You can use either of the two equations to solve

1) 2(2)+3(3) does not equal 5
2) 2(3)+3(2) does not equal 5
3) 2(3)+3(-2) does not equal 5
4) 2(-2)+3(3) equals 5
4.5) Double check your answer by doing the same thing for the second equation // 3(-2)+2(3) does equal zero.

D
6 0
3 years ago
A weather station in a major city in the Northwest kept data about the weather conditions over the past year. The probabilities
Black_prince [1.1K]
It is important to note that all the information's required are already given in the question

Probability that a day will be hot = 0.15 + 0.10
                                                   = 0.25
Probability that a day will be sunny = 0.15 + 0.30 + 0.10
                                                        = 0.55
Adding the above two probabilities, we get = 0.25 + 0.55
                                                                     = 0.80
Now
Probability that a day will be both hot and sunny = 0.15
So
Probability that a day was hot or sunny = 0.80 - 0.15
                                                               = 0.65
I hope the procedure is clear enough for you to understand.
3 0
3 years ago
Read 2 more answers
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