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1 year ago

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A business is planning to make a new kind of speaker. The cost to produce x speakers is C=72,000+18x. Meanwhile, the revenue ear

ned by selling x speakers is given by R=27x. If R

1 answer:

Sophie [7]1 year ago

7 0

[tex]\begin{gathered} C=\text{ 72000 + 18x} \\ R=\text{ 27x } \\ \\ R\text{ }Therefore, the company loses money if it sells less than 8000.

The answer is D.

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Given diameters EB and FC, find the measure of arc EF. *

Dafna1 [17]

Answer:

Correct option: first one -> 45°

Step-by-step explanation:

FC is a diameter, so the arc FBC measures 180°.

If we have that FBC = FB + BC, then we can find the value of BC:

FB + BC = 180

135 + BC = 180

BC = 45°

If we call the center of the circle 'O, we have that the central angle EOF and the central angle BOC are vertically opposite angles, so EOF = BOC.

The central angles have the same measure that the arcs they are related, so we have that:

angle BOC = arc BC = 45°

angle BOC = angle EOF

angle EOF = arc EF = 45°

Correct option: first one

4 0

3 years ago

it took a toy car 1 minute to roll 180 ft. what was this cars average rate of speed, in ft per second?

Korvikt [17]

3 feet per second (ignore this)

7 0

3 years ago

I’ve been stuck on this for 3 hours and got 4 different answers...

mestny [16]

Answer:

$14x-8$

Step-by-step explanation:

The sides for the square are equal to 2x-5 because that is the square root of the area. The length of the rectangle is 3x+6 and the width is 3x-6 because that is what you get when you factor the equation.

Now, you have add them up.

$4(2x-5)+2(3x-6)+2(3x+6)\\$

To take out the line in the middle of the shape we will subtract $2(3x-6)$ because we are assuming that this equation is equal to the shorter side. This makes the equation

$4(2x-5)+2(3x-6)\\14x-8$

If you are looking for a numerical answer, I can't say I know how to get it.

Hope this helps! <3

6 0

3 years ago

There is a mistake in this problem find the mistake

fiasKO [112]

Answer:

The mistake is the problem itself. It should be

5x=100

x=100÷5

x=20

Step-by-step explanation:

The mistake is the problem itself. It should be

5x=100

x=100÷5

x=20

8 0

3 years ago

Martin earned the following scores on his last five tests.

egoroff_w [7]

<span>98, 78 , 84, 75, 91
</span>

The interquartile range formula is the first <span>quartile </span>subtracted from the third quartile:

<span>IQR = Q3 – Q1.</span>

<span><span>****************************************************
Step 1: Put the numbers in order.
75, 78, 84, 91, 98

</span><span><span>Step 2: </span><span>Find the median</span>.
</span></span>75, 78, 84, 91, 98
<span>
<span><span>Step 3: </span><span>Place parentheses around the numbers above and below the median. </span>
Not necessary statistically, but it makes Q1 and Q3 easier to spot.
</span></span>(75, 78), 84, (91, 98)
<span>
<span><span>Step 4: </span>Find Q1 and Q3
Think of Q1 as a median in the lower half of the data and think of Q3 as a median for the upper half of data.
</span></span>(75, 78), 84, (91, 98)

<span>*(75, 78) ---> (75 + 78) </span>÷ 2 = 76.5
<span>*(91, 98) ---> (91 + 98) </span>÷ 2 = 94.5
<span>
<span><span>Step 5: </span>Subtract Q1 from Q3 to find the interquartile range.
94.5 – 76.5 = 18

IQR = 18</span></span>

7 0

3 years ago

Read 2 more answers