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3 years ago

Cara measured 8 2/3 yards of cloth she the cut it into 4 equal pieces. what was the length of each piece of cloth?

Mathematics

1 answer:

Katyanochek1 [597]3 years ago

3 0

Answer:

2.16

Step-by-step explanation:

8 2/3 / 4 or 8.166/4

= 2.16 (don't round up because they all have to be equal)

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A student’s construction of the perpendicular bisector of is shown below. What is the student’s error?

Elena-2011 [213]

The student did not make the opening of each arc drawn from S and T greater than half the length of the line ST. When drawing a perpendicular bisector, the arcs should go past the center of the line segment.

4 0

3 years ago

Let f(x)=⌊x/2⌋. We learned that the floor and the ceiling functions are NOT invertible, but we also learned about the set of pre

romanna [79]

Answer:

Value of $f^{-1}(\{4\})$ is 8.

Step-by-step explanation:

Given function,

$f(x)=\big[\frac{x}{2}\big]$

we have to find : $f^{-1}(\{4\})$

It is known that,

$[x]$ =the greatest integer <=x

Then,

$f(x)=\big[\frac{x}{2}\big]$

$\implies x=f^{-1}(\big[\frac{x}{2}\big])$

Taking x=8 we get,

$f^{-1}(\big[\frac{x}{2}\big])=x$

$\implies f^{-1}(\big[\frac{8}{2}\big])=8$

$\implies f^{-1}([4])=8$

$\implies f^{-1}(\{4\})=8$ ( Since [4]=4 )

Hence the value of $f^{-1}(\{4\})$ is 8.

7 0

3 years ago

Help desprate here.....

rjkz [21]

Answer:

B. 3

It says the answer is too short so im just typing random stuff

6 0

3 years ago

Read 2 more answers

What is 9$ discounted to 4$ in percent form?

faust18 [17]

9 dollars is 4 dollars.
Let's find the percent form of the discount
=> 4 dollars / 9 dollars = 0.44
Now, let's convert it to percentage
=> 0.44 * 100% = 44%
Thus the discount is 44%

4 0

3 years ago

An air conditioner is turned on at 1:00 pm. By 3:30 pm the room temperature had dropped from 82F to 72F. Find the average rate o

Sladkaya [172]

Given:

From 1:00 pm to 3:30 pm the room temperature had dropped from 82F to 72F.

To find:

The average rate of change of temperature in this room over the period.

Solution:

Time between 1:00 pm to 3:30 pm is 2 hr 30 minutes, i.e., 2.5 hours.

So, change in time is 2.5 hours.

Room temperature had dropped from 82F to 72F.

Change in temperature = 72 F - 82 F

= -10 F

We know that, average rate of change of temperature in this room over the period is

$m=\dfrac{\text{Change in temperature}}{\text{Change in time}}$

$m=\dfrac{-10}{2.5}$

$m=-4$

Therefore, the average rate of change of temperature in this room over the period is -4. It means the temperature is decreasing 4 F per hour.

7 0

3 years ago