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iVinArrow [24]
3 years ago
9

a) Does the Range Rule of Thumb estimate more often underestimate or overestimate the actual standard deviation?

Mathematics
1 answer:
qwelly [4]3 years ago
8 0
Yes it dose hope this helped :)
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To make a profit, a company’s revenue must be greater than its operating costs. The company’s revenue is modeled by the expressi
valina [46]
Revenue = 7.5x - 100
Operation Costs = 5.8x + 79.86

To break even, operation cost = Revenue
⇒ 7.5x - 100 = 5.8x + 79.86
7.5x = 5.8x + 179.86 (Add 100 to both sides)

7.5x - 5.8x = 179.86
1.7x = 179.86
x = 105.8

This implies that the company will need to sell at least 106 items to make a profit.

The inequality that will determine the number of items at need to be sold to make a profit is x ≥ 106

The solution to the inequality is as follows

Revenue = 7.5x - 100
if x =106
Revenue = 7.5(106) - 100
Revenue = 695

Operational Cost = 5.8x + 79.86
if x = 106
Operational Cost = 5.8(106) + 79.86
Operational Cost = 694.66

Profit ≥ (695 - 694.66)
Profit ≥ 0.34

The company must sell at least 106 items to make a profit.
8 0
3 years ago
Read 2 more answers
Which word could describe the relationship of the lines containing the points (1, 6) and (1, 3)?
Elan Coil [88]

Answer:

Coincidental

Step-by-step explanation:

<em>If the two lines have the same two points, they must also have the same slope </em><em>and</em><em> the same y intercept. From this we can deduct that they are actually the same line. Two lines that are directly on top of each other are considered coincidental lines.</em>

3 0
3 years ago
We define a bow-tie quadrilateral as a quadrilateral where two sides cross each other. An example of a bow-tie quadrilateral is
aleksandrvk [35]

Answer:

70/5985

Step-by-step explanation:

We know that a quadrilateral needs to have four vertices (or points on the circle). There are always two ways to link the cross — horizontally or vertically. Using my limited knowledge of combinations, we know that choosing four points out of seven equals 35. Multiplying the two ways to connect those lines (again, horizontally and vertically) makes 35*2 = 70 "bow-tie quadrilaterals" that can be formed on the circle using four points. There are 5985 ways four chords can be chosen out of twenty-five chords because C(25,4) equals 5985, so the probability is 70/5985... and then we just need to simplify that fraction.

3 0
3 years ago
____probability is the predicted ratio of favorable outcomes to the total number of outcomes.
LiRa [457]

Answer:

yes

Step-by-step explanation:

5 0
4 years ago
Can Anyone Please Do This It’s Math
Galina-37 [17]

number one  is (0.2, 0.2) and then number two is the answer roses.

4 0
3 years ago
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