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Tom [10]
3 years ago
15

Seven-year-old students at an elementary school were given a 10-yard head start in a race. The graph shows how far the average s

tudent ran in 30 seconds. A line graph with Distance, in yards, on the x axis and Age of Runner on the y axis. The x axis has a scale from 0 to 80 in increments of 10. The y axis has a scale of 0 to 8 in increments of 2. A straight line connecting 10, 7 and 60, 7 is drawn. Which statement best describes the domain of the function represented in the graph? 10 ≤ x ≤ 60, or x is from 10 to 60 7 ≤ x ≤ 60, or x is from 7 to 60 7 ≤ x ≤ 10, or x is from 7 to 10 0 ≤ x ≤ 10, or x is from 0 to 10

Mathematics
2 answers:
blagie [28]3 years ago
7 0

Answer:

a

Step-by-step explanation:

tiny-mole [99]3 years ago
3 0

Answer:

A: 10 ≤ x ≤ 60, or x is from 10 to 60

Step-by-step explanation:

The <em>domain of the function</em> is, by definition, the values in the x-axis where the function exists, or in other words, has a corresponding value in the y-axis.

The only defined values for x in this problem are from 10 to 60, which have a value of 7 constant in the y-axis.

Please find attached a graph for the function described.

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A company makes electronic gadgets. One out of every 50 gadgets is faulty, but the company doesn't know which ones are faulty un
Talja [164]

Answer:

Yes, the company can expect a profit in the long term

Step-by-step explanation:

In this question, we are to project if a company is expected to make a profit or loss given the information in the question.

Let’s use the scenario of 50 gadgets produced.

1 is expected to be faulty, while 49 is thus expected to work perfectly.

Now, on this 49 sold, there is an expectancy of $3 profit. Hence, this means that for a batch of 50 gadgets produced, the amount of expected profit will be 49 * 3 = $147

The amount that would be used to repair the faulty unit is $80. If we subtract this from the total expected profit, we have $147-$80 = $67

Hence, per 50 gadgets sold, a total of $67 in profit is to be expected

This means profit is expected in the long tey

6 0
3 years ago
Hellllllllllllllllllllllllllp me plzzzzz
anzhelika [568]

D. 7 miles

Step-by-step explanation:

26.5/4 =6.62

So the best estimate is 7 miles

4 0
3 years ago
Factor the expression 8x^3y-8x^2y-30xy
miv72 [106K]

Find the Greatest Common Factor (GCF)

GCF = 2xy

Factor out the GCF. (Write the GCF first. Then, in parentheses, divide each term by the GCF.)

2xy(8x^3y/2xy + -8x^2y/2xy + -30xy/2xy)

Simplify each term in parenthesis

2xy(4x^2 - 4x - 15)

Split the second term in 4x^2 - 4x - 15 into two terms

2xy(4x^2 + 6x - 10x - 15)

Factor out common terms in the first two terms, then in the last two terms;

2xy(2x(2x + 3) -5(2x + 3))

Factor out the common term 2x + 3

<u>= 2xy(2x + 3)(2x - 5)</u>

4 0
4 years ago
Find the mean for the following group of data items. 4.1, 8.9, 3.2, 1.9, 7.3, 6.3, 6.7, 8.6, 3.2, 2.3, 5.9 (Round to 3 decimal p
Alex787 [66]

Answer:

The mean is 5.309.

Step-by-step explanation:

Given group of data,

4.1, 8.9, 3.2, 1.9, 7.3, 6.3, 6.7, 8.6, 3.2, 2.3, 5.9,

Sum = 4.1+ 8.9 + 3.2 + 1.9 + 7.3 + 6.3 + 6.7 + 8.6 + 3.2 + 2.3 + 5.9 = 58.4,

Also, number of observations in the data = 11,

We know that,

Mean=\frac{\text{Sum of all observation}}{\text{Total observations}}

Hence, the mean of given data = \frac{58.4}{11}=5.30909\approx 5.309

4 0
3 years ago
Find the area of a circle with a radius of 8ft<br><br> i need help
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Answer:

Area - 201.062ft

Step-by-step explanation:

3 0
4 years ago
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