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3 years ago

Complete the table of values for the function f(x)=-x^2+8x-2

Mathematics

1 answer:

Kipish [7]3 years ago

6 0

Answer:

f(1) = 7

f(2) = 18

f(3) = 31

f(4) = 46

f(5) = 63

f(6) = 82

f(7) = 103

f(8) = 126

f(9) = 151

f(10) = 178

Step-by-step explanation:

f(1) = (-1)^2+8(1)-2 = 7

Continue plugging in values...

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Solve for x. -2(x-7)=16

solniwko [45]

Answer:

-1

Step-by-step explanation:

-2(x-7)=16

-2x +14=16 You distribute

-14 -14

-2x = 2

-2 -2 you divide

and get -1 as your answer.

Hope my answer has helped you!

5 0

3 years ago

Find two consecutive even integers such that the lesser added to three times the greater gives a sum of 46.

kvv77 [185]

N; n + 2 - the two consecutive even integers

n + 3(n + 2) = 46
n + 3n + 6 = 46 |subtract 6 from both sides
4n = 40 |divide both sides by 4
n = 10

n + 2 = 10 + 2 = 12

Answer: 10 and 12.

5 0

3 years ago

The length of a rectangle is 9 centimeters more than half

Sedaia [141]

Answer:

l = 16 cm

Step-by-step explanation:

Let's set the width of the rectangle as "w" and the length of the rectangle as "w/2 + 9".

The perimeter of a rectangle is calculated by adding up the value of all of its side lengths. Therefore, we can find the perimeter using 2l + 2w = P.

We can substitute 60 for P and w/2 + 9 for l.

2(w/2 + 9) + 2w = 60
2w/2 + 18 + 2w = 60
w + 18 + 2w = 60
3w + 18 = 60
3w = 42
w = 14

Substitute w = 14 into the equation for length l.

l = w/2 + 9
l = 14/2 + 9
l = 16

The length of the rectangle is 16 cm.

4 0

3 years ago

HELP URGENT STEP FUNCTIONS!!!!!!! Used books cost $2.25 each. Which expression represents the total number of books that can be

irinina [24]

Answer:

A. $\left \lfloor \frac{10}{2.25} \right \rfloor$

Step-by-step explanation:

We are given,

The cost of one book = $2.25

Since, it takes $2.25 to buy 1 book.

The, for $10, we can get $\frac{1}{2.25}\times 10$ i.e. $\frac{10}{2.25}$ = 4.44

Since, number of books cannot be in decimals.

So, the closest integer to 4.44 is 4.

Hence, we can buy 4 books from $10.

Now, according to the options:

A. $\left \lfloor \frac{10}{2.25} \right \rfloor = \left \lfloor 4.44\right \rfloor = 4$

B. $\left \lceil \frac{10}{2.25} \right \rceil = \left \lceil 4.44 \right \rceil=5$

C. $\frac{10}{\left \lceil 2.25\right \rceil} =\frac{10}{3} =0.33$

D. $\frac{10}{\left \lfloor 2.25\right \rfloor} = \frac{10}{2} = 5$

Hence, we see that from the options, A is correct.

3 0

3 years ago

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Alex originally paid $5200 for her car 1 year ago. The value of her car would is $4,420. What is the percent of decrease in the

horsena [70]

See the picture for the answer.

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3 years ago