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AlekseyPX
3 years ago
7

The function f (x) =3x^2-2x-4 opens which way?

Mathematics
2 answers:
lina2011 [118]3 years ago
7 0
Upwards. Positive quadratic functions open upward, while negative quadratic functions open downwards.

:)
NikAS [45]3 years ago
6 0
Y=3x^2-2x-4

dy/dx=6x-2

d2y/dx2=6

Since acceleration is always positive, the function opens upwards....
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Evaluate each expression using the values m = 7, r = 8, and t = 2.
user100 [1]

So I'll walk through the first 2. Then please try the other ones and let me know if you run into more problems.

5m-6

If m is equal to 7, then replace m with 7.

5(7)-6

5x7=35 so the expression is now 35-6. Solve.

35-6=29

So that was the first one.

4m+t

We just do what we do with the first problem.

4(7)+(2)

4x7=28 so the expression is 28+2.

28+2=28

---

hope it helps

p.s. When there is subtraction, add. When there is division, multiply to cancel that out. When there is multiplication, divide to cancel. etc.

6 0
3 years ago
Read 2 more answers
Select the correct answer.
lorasvet [3.4K]

Answer:

A. 5x^2 - 2x - 12 = 0

Step-by-step explanation:

The base is x feet.

The height is 2 less that 5 times the base.

The height is 5x - 2.

The area is 12.

The area is base * height / 2.

area = bh/2

area = x * (5x - 2) = 12

5x^2 - 2x = 12

5x^2 - 2x - 12 = 0

8 0
3 years ago
Read 2 more answers
Select the correct answer from each drop-down menu.<br> what is 1 plus 1
babunello [35]
One plus one equals 2 let me know if you need more help
4 0
2 years ago
John needs 7 gallon bottles of water to fill 90water balloons how many gallon bottles of water does John need to purchase to fil
Allushta [10]

Answer:

11 bottles

Step-by-step explanation:

make a proportion because if you're using the same rate proportions can show that it's equal

\frac{7}{90} = \frac{x}{140}

cross multiply

7 *140= 980

divide the answer by 90 to find x

980/90= 10.8

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8 0
3 years ago
Enter an inequality that represents the phrase "the sum of 5 and y is less than 7."
strojnjashka [21]

Answer:

Kobe

Step-by-step explanation:

got yeeted

yeet XD

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3 years ago
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