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pychu [463]
4 years ago
5

Evaluate f(x)=1/4x for x=-5 A. 20 B. -1/20 C. -1 1/4 D. -4/5

Mathematics
2 answers:
NeX [460]4 years ago
6 0

f(-5)=(1/4)(-5)=-1.25 or -1 1/4

hope this helps you out! good luck!


zhannawk [14.2K]4 years ago
5 0

The answer is c. plug in 5 for x


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What are the solutions of x^2 = -5x + 8?
inna [77]

Answer: x=-5-√57/2, -5+√57/2

5 0
3 years ago
Read 2 more answers
X^(2)+17x+72<br> im confused on how to factor this?
polet [3.4K]

Answer:

  (x +9)(x +8)

Step-by-step explanation:

In a quadratic with leading coefficient 1, the coefficient of the linear term (17) is the sum of factors of the constant term (72). If you know your times tables, you know that 8×9 = 72, and you also know that 8+9 = 17.

With these facts, you can write the factorization as ...

  (x +8)(x +9)

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If you need to see the working out, rather than jumping to the end, you can use the sum information to rewrite the linear term:

  x^2 +(8x +9x) +72

Now factor pairs of terms:

  (x^2 +8x) + (9x +72) = x(x +8) +9(x +8) = (x +9)(x +8)

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It also helps to be familiar with the product of binomials:

  (x +a)(x +b) = x^2 +(a+b)x +ab

4 0
3 years ago
Please help!!! It's about the types of quantities if they are proportional or not if there is a constant number.
alekssr [168]
1. Yes, because y=kx. “Y” is equal to 4 × “x”, on every problem. y=4x
2. No, because on the first set of numbers 3 and 15 the equation is Y=5x. Then on the second set of numbers 4 and 17 the equation is Y=4.25x.
3. Yes, because Y=1.5x.
7 0
4 years ago
PLEASE HELPPPPP!!!!
ololo11 [35]
It would take him 7.5 hours to do it himself
3 0
3 years ago
The base of a triangle is 5 45 cm and the height is 3 88 cm. What is the area of the triangle? Recall: A= 1 2 bh
galina1969 [7]

Answer:

i got 21.146

Step-by-step explanation:

multiply 5.45 x 3.88 and thats the answer. it may need to be rounded.

21.10?

3 0
3 years ago
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