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Sergio [31]
3 years ago
9

How to find the correct unit of measurement? I am struggling with this. What is the difference between ft³, ft and ft²? Example:

 
the length of a rectangular play area is 40 ft. The width of the play area is 20 ft. 

Which is the correct unit of measurement to use when figuring out how much fence is needed to surround the play area?

A.
ft³

B.
ft

C.
ft²
Mathematics
2 answers:
Yuki888 [10]3 years ago
8 0
Feet cubed is used when finding volume, feet squared is used when finding area, and feet is used when finding length, so in this case you would use feet
arlik [135]3 years ago
4 0
<span> </span> <span>if you want to determine the perimeter / length, use a normal measure - ft.
The area is ft^{2}
<span>and the volume</span></span> ft^{3}
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olga55 [171]

Answer:

324

Step-by-step explanation:

4 0
3 years ago
What is the range of the function below in set builder notation? y=|x-3|
Kisachek [45]

Answer:  \{y | \ y \in \mathbb{R}, \ y \ge 0\}

This translates to "y is any real number such that it is 0 or larger".

The reasoning is that the result of any absolute value function is either 0 or positive. In other words, we'll never get a negative result of an absolute value function. This is due to how absolute value represents distance. Negative distance does not make sense.

So if y = |x-3| then y = 0 is the smallest output possible. We could have any positive output we want.

In terms of a graph (see below), the V shape is at the lowest point (3,0). The y coordinate is all we care about in terms of finding the range. So we see the lowest y value is y = 0.

4 0
3 years ago
Find the coordinate that divides the directed line segment from A(-2,-4) to B(8,1) in the ratio of 2 to 3
zalisa [80]
We have that
A(-2,-4)  B(8,1) <span>

let
M-------> </span><span>the coordinate that divides the directed line segment from A to B in the ratio of 2 to 3

we know that

A--------------M----------------------B
        2                     3
distance AM is equal to (2/5) AB
</span>distance MB is equal to (3/5) AB
<span>so

step 1
find the x coordinate of point M
Mx=Ax+(2/5)*dABx
where
Mx is the x coordinate of point M
Ax is the x coordinate of point A
dABx is the distance AB in the x coordinate
Ax=-2
dABx=(8+2)=10
</span>Mx=-2+(2/5)*10-----> Mx=2

step 2
find the y coordinate of point M
My=Ay+(2/5)*dABy
where
My is the y coordinate of point M
Ay is the y coordinate of point A
dABy is the distance AB in the y coordinate
Ay=-4
dABy=(1+4)=5
Mx=-4+(2/5)*5-----> My=-2

the coordinates of point M is (2,-2)

see the attached figure

7 0
3 years ago
Sovle the inequality r - 7 ≤ 2​
yawa3891 [41]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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Answer all questions CORRECTLY BIG POINTS!
hammer [34]
  • y^2+9y+20
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  • y^2+2y+3
  • Step-by-step explanation:
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  3. (y+3)(y-1)

=y(y-1)+3(y-1)

=y^2-y+3y-3

= y^2+2y+3

5 0
3 years ago
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