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marissa [1.9K]
3 years ago
15

Quadratic Functions in Standard Form

Mathematics
1 answer:
Stels [109]3 years ago
5 0

Answer:

You just need to put the given value of x-input in function f(x)=2x²+6x-8 to get y-output

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A rectangle has a length of 2 6√<br> and width of 6√<br> . Find the perimeter of the rectangle.
Angelina_Jolie [31]
  • L=2root6
  • B=root6

\\ \rm\Rrightarrow Perimeter=2(L+B)

\\ \rm\Rrightarrow Perimeter=2(2\sqrt{6}+\sqrt{6})

\\ \rm\Rrightarrow Perimeter=2(3\sqrt{6})

\\ \rm\Rrightarrow Perimeter=6\sqrt{6}

8 0
3 years ago
Read 2 more answers
Some people advise that in very cold​ weather, you should keep the gas tank in your car more than half full. Irene​'s car had 6.
artcher [175]

Answer:

Irene spent $33.82 on gas to fill her tank.

I don’t know if im correct

7 0
3 years ago
21. When Brooke buys lunch at the cafeteria,
ikadub [295]

Answer:

The amount in Brooke's lunch account change by the end  of that week is $-20 or $20 decrease.

Step-by-step explanation:

Consider the provided information.

Each day Brooke buys lunch and withdrawn the same amount i.e $4.

The number of days are 5.

To calculate the change by the end  of that week, find the total amount withdrawn in 5 days.

To represent withdrawn use a negative sign.

5(-4)

The product of the numbers will be a negative number as they have opposite sign.

5(-4)=-20

Hence, the amount in Brooke's lunch account change by the end  of that week is $-20 or $20 decrease.

7 0
4 years ago
Read 2 more answers
A livestock pen is built in the shape of a rectangle that is 2 times as long as it is wide. The perimeter is 30 feet. If the mat
shutvik [7]

Answer:

$57.5 is the total cost to build the pen.

Step-by-step explanation:

We are given the following in the question:

A livestock pen is built in the shape of a rectangle.

The length of rectangle is two times the width.

Let l be the length of rectangle and w be the width of rectangle. Thus, we can write

l = 2w

Perimeter = 30 feet

\text{Perimeter of rectangle} = 30\\2\times (l\times w) = 30

Putting values,

2(2w + w) = 30\\6w = 30\\w = 5\\l = 2w = 10

The length of rectangle is 10 feet and width of rectangle is 5 feet.

If the material used to build the pen is $ 1.75 per foot for the longer sides and $ 2.25 per foot for the shorter sides

Cost of building =

=2\times(\text{Cost of length}\times \text{Length} + \text{Cost of width}\times \text{Width})\\=2\times(1.75\times 10 + 2.25\times 5)\\=57.5

Thus, $57.5 is the total cost to build the pen.

7 0
3 years ago
Which equation represents an exponential function that passes through the point (2, 80)?
Fudgin [204]

The function f(x) = 5(x)⁴, and f(x) = 5(4)ˣ represents the function that passes through the point (2, 80) option second and fourth are correct.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have; an exponential function that passes through the point (2, 80).

f(x) = 4(x)⁵

Plug (2, 80) in the abovew function:

f(2) = 4(2)⁵ = 128 (false)

f(x) = 5(x)⁴

Plug (2, 80) in the abovew function:

f(2) = 5(2)⁴ = 80 (true)

f(x) = 4(5)ˣ

f(2) = 4(5)² = 100 (false)

f(x) = 5(4)ˣ

f(2) = 5(4)² = 80 (true)

Thus, the function f(x) = 5(x)⁴, and f(x) = 5(4)ˣ represents the function that passes through the point (2, 80) option second and fourth are correct.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

3 0
3 years ago
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