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Licemer1 [7]
3 years ago
9

Describe a situation with an output of area in square feet that can be modeled using the function f(x) = (x)(2x + 5).

Mathematics
2 answers:
Lesechka [4]3 years ago
4 0
The area of a rectangular garden can be represented by the function
f(x) = x(2x + 5)
Find the area if the length, x, is 3 feet.
BARSIC [14]3 years ago
4 0
The area is length times width
width=x and length is z

if the length is 5 more than twice the width, express the area in terms of the width

so then
f(x)=xz
z=5+2x or 2x+5
f(x)=(x)(2x+5)
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The volume of the rectangular prism is 648 feet. The rectangular base is 6 feet by 9 feet. What is the height of the prism?
IrinaK [193]

Answer:

h=12ft

Step-by-step explanation:

The formula one would use for finding the volume of a rectangular prism is as follows:

  • Volume = length × width × height , V=l*w*h

With this in mind, let's plug in the given variables in the question for this formula.

V=648ft^3

l=6ft

w=9ft

h= ?

  • We don't know the height, but that's just fine. We will plug in all our values and isolate h.

V=lwh\\648ft^3=(6ft)(9ft)h

  • I'm leaving in units just because I want to show that units aren't just for show. They can be used when in doubt of how to go about your math.

648ft^3=(6ft)(9ft)h\\648ft^3=(54ft^2)h\\\frac{648ft^3}{54ft^2}=\frac{(54ft^2)h}{54ft^2}

  • Notice, that the units on the left side cancel out, leaving only the unit ft left next to the solution. In the same way, the units on the right side cancel out too, leaving only h, height.

\frac{648ft^3}{54ft^2}=\frac{(54ft^2)h}{54ft^2}\\12ft=h

If involving units only confuses you, like it does for me, you can remove them like so, you just need to know what units your solution uses instead of being able to come to the proper units by using math.

V=lwh\\648=(6)(9)h\\648=54h\\\frac{648}{54}=\frac{54h}{54}\\12ft=h

5 0
3 years ago
Please HELP ASAP! I attached everything to make it easy for u to understand. Please help quickly. Please be sure about your answ
Assoli18 [71]

Answer: 1, 3, 4, and 5 but stick with 1, 3, and 4

Step-by-step explanation:

just use a calculator to find 3, 4 is easy because red normally has more, and one is just an estimate

6 0
3 years ago
Parker High School's homecoming dance tickets cost $12 for seniors and $15 for everyone else. A total of 165 students attended t
Zina [86]

Answer:

eee

Step-by-step explanation:

ee

4 0
3 years ago
A cylindrical tank with a radius of 12 inches and a height of 20 inches is full of water. does the tank have enough water to fil
Murrr4er [49]

Answer:

yes It has

Step-by-step explanation:

v of the tank

v= \pir^2  h

v=3.14*144*20

v=9034

the v of each ballon :

V = 4/3 \pir^3

v=4/3 * 3.14 .8

v= 33.5

all the ballons v is 250 * 33.5 = 8373

9034-8373 = 661 v of the water in the tank would be left

4 0
3 years ago
Write an equation to represent the following statement.<br> The sum of j and 47 is 55.
Akimi4 [234]

Answer:

J plus 47 = 55

If you need to find J

The value of J is

J=55-47

J=8

Step-by-step explanation

7 0
3 years ago
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