A human factor expert recommends that there be at least 9 square feet of floor space in a college classroom for every student in the class. find the minimum floor space that 49 students require.The minimum floor space required is__ft^2

Answers

Answer 1

Answer: Answer is very straightforward:
If you got 49 students and require at least 9 square feet of floor space for each of them, the total minimum floor space you need would be: 49 x 9 = 441 square ft.

Hope it helps!

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Ted needs an average of at least 70 on his three history test he has scored already 85 and 60 on two test what is the minimum grade ted need on his third test?

Answers

so average=(total of scores)/(number of tests)
needs at least average of 70
at least is represented as greater than or equal to or the sign (>)
70>(total)/(number oftests)

since we have 3 tests, we have to have 3 scores so
70>(x+y+z)/3
he scored 85 and 60
70>(x+85+60)/3 (doesn't matter which to subsitute)
70>(x+145)/3
multiply obht sides by 3
210>x+145
subtract 145 from both sides
65>x
he needs to get at leas 65 on his third test

4. The shortest distance from a point to a straight line is A. a parallel through the point to the line.

B. the perpendicular bisector of the line.

C. a vertical line through the point.

D. the perpendicular from the line to the point.

Answers

D because it is the shortest distance from a point to a straight line

Answer:

D. the perpendicular from the line to the point.

Explanation:

Bc it is the shortest distance

Dimitri determined that the ordered pair (2, –2) is a solution to the system of linear equations 7x + 9y = –4 and 5x – 2y = 6 as shown.He mixed up the coordinates of the ordered pair when substituting it into the equations 7x + 9y = –4 and 5x – 2y = 6.

He checked the equation 7x + 9y = –4 first when he should have checked first.

He made a mistake in his calculations when substituting the ordered pair into the equation 7x + 9y = –4 and simplifying.

He made a mistake in his calculations when substituting the ordered pair into the equation 5x – 2y = 6 and simplifying.