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elena55 [62]
3 years ago
15

Evaluate the function for the given value: f(x)=2x (to the power of 2) -5x-17, find f(-3)

Mathematics
2 answers:
lions [1.4K]3 years ago
7 0

Answer:

f(-3) = 16

Step-by-step explanation:

You substitute -3 to x.

f(-3) = 2(-3)² - 5(-3) - 17

f(-3) = 16.

As for the coordinates, the coordinates plotted in the graph above are (1,-1) and (2,-2).

Colt1911 [192]3 years ago
7 0

Answer:

16

Step-by-step explanation:

2x² - 5x - 17

Put x as -3 and solve.

2(-3)² - 5(-3) - 17

2(9) - (-15) - 17

18 + 15 - 17

= 16

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To prepare for the town's race, Andrew runs around a rectangular field. The dimensions of the field are 450 feet
Ket [755]

Answer:

46.9 times

Step-by-step explanation:

First, we can calculate how many feet it takes to run around the field. To find the perimeter of a rectangle, we can use the formula

2* length + 2 * width. With the length being 450 and the width being 225 here, we can say that

2*450 + 2 * 225 = 1350 feet

Therefore, Andrew runs 1350 feet each time he runs around the field. Next, we need to figure out how much 1350 feet goes into 12 miles as we want to find how many times Andrew runs around the field to get to 12 miles. This can be represented by

12 miles/1350 feet

One thing that we can do here is multiply the fraction by 1 to keep it the same. Because 1 mile = 5280 feet, we can say that

1 mile/5280 feet = 1 = 5280 feet/1 mile. Therefore, it would be safe to multiply

12 miles/1350 feet by 1 = 5280 feet/1 mile. Note that feet is on the bottom in the first fraction (12 miles/1350 feet) and on the top in the second (5280 feet/1 mile) so they will cancel out. Similarly, miles are on top in the first and bottom in the second. We then have

12 miles/1350 feet * 5280 feet/1 mile =63360/1350 ≈ 46.9

4 0
3 years ago
Now answer the question:
Viktor [21]
X=3
Y=5
0.30 x 5 = 1.5
1.50 x 3 = 4.5
1.5 + 4.5 = 6
5 0
2 years ago
Are 4(5+x) and (5+4)+x equal
SSSSS [86.1K]

Answer:

No, they are not equal

Step-by-step explanation:

If x = 1

4(5+x) = 4(5+1) = 4 x 6 = 24

(5+4) + x  = 9 +1 = 10

24\neq10

3 0
3 years ago
I have to explain the meaning of zero?<br> Please help, ill give brainly!
Klio2033 [76]

Answer:

0 ( zero) is a number, and the numerical digit used to represent that number in numerals. It fulfills a central role in mathematics as the additive identity of the integers, real numbers, and many other algebraic structures. As a digit, 0 is used as a placeholder in place value systems.

8 0
3 years ago
What additional information is required in order to know
Allushta [10]

Answer:

TU=JU

Step-by-step explanation:

you know a side. they share a side. so you need one more for SSS

3 0
4 years ago
Read 2 more answers
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