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nata0808 [166]
2 years ago
8

Rick surveyed 50 students at his school to see how many have after-school jobs and how many are getting the new video game conso

le that is coming out next month. From his data, 30% of the students are getting the new console. Also, of the 20 students who have after-school jobs, 45% are getting the new console. Using this information, complete the following table with the relative frequency of the columns. 0.30 0.70 1.00 0.20 0.80 0.45 0.55 Mathematics
Mathematics
1 answer:
Alina [70]2 years ago
7 0
Im pretty sure it was d when i took the test hopefully im corecct sorry if im not 
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The percentage that the store has taken off would be 30%.

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Round 5370288 to the nearest 100,000
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5400000 because 7 is after three so it turns to 4
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The graph shows the influence of the temperature T on the maximum sustainable swimming speed S of Coho salmon. (b) Estimate the
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The top of a ladder is 4m up a vertical wall.The bottom is 2m from the wall.The coordinate axes are the wall and the horizontal
mash [69]

Answer:

Part a) y=-2x+4

Part b) The coordinates of the point are (\frac{4}{3},\frac{4}{3})

Step-by-step explanation:

Part a) Find the equation representing the ladder

we have the ordered pairs

(0,4) and (2,0)

Find the slope

m=(0-4)/(2-0)=-2

Find the equation of the line in slope intercept form

y=mx+b

we have

m=-2\\b=4

substitute

y=-2x+4

Part b) A square box just fits under the ladder.Find the coordinates of the point where the box touches the ladder.

If the box is a square

the x-coordinate of the point where the box touches the ladder must be equal to the y-coordinate

x=y

y=-2x+4

substitute

x=-2x+4\\3x=4\\x=\frac{4}{3}

y=x=\frac{4}{3}

therefore

The coordinates of the point are (\frac{4}{3},\frac{4}{3})

6 0
2 years ago
Mick completes a total of 5 assessments for his course. He gets these marks 56,42,47,59,48. Mike needs an average mark of 50 or
Mars2501 [29]
To find the average assessment, add the 5 grades together, then divide by the quantity of grades added together (in this case 5).

=56 + 42 + 47 + 59 + 48
=252

=252 ÷ 5
=50.4 average

ANSWER: Yes, he passes his course with an average grade of 50.4.

Hope this helps! :)
4 0
2 years ago
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