MATHEMATICS
MIDDLE SCHOOL

Answer: 90.

142 - 38 = 104

104 ÷ 2 = 52

52 = lowest grade

90 = highest grade

This is correct because 90 is 38 higher than 52, and the sum of 90 + 52 = 142.

142 - 38 = 104

104 ÷ 2 = 52

52 = lowest grade

90 = highest grade

This is correct because 90 is 38 higher than 52, and the sum of 90 + 52 = 142.

MIDDLE SCHOOL

What’s the difference between 91/16 and 91/4

Answer:

91/4 is a bigger fraction then 91/16

Step-by-step explanation:

91/4=20 11/4 when 91/16= 5 11/16

MIDDLE SCHOOL

I need the answer to finding the reciprocal of -72÷(-9)

First lets do the math...

-72 / -9 = 8

the reciprocal of a number is just flipping the number.

example : the reciprocal of 2/3 = 3/2.....the reciprocal of 6/7 = 7/6...and when u have a whole number, put it over 1...

so the reciprocal of 8, or 8/1 is gonna be 1/8

-72 / -9 = 8

the reciprocal of a number is just flipping the number.

example : the reciprocal of 2/3 = 3/2.....the reciprocal of 6/7 = 7/6...and when u have a whole number, put it over 1...

so the reciprocal of 8, or 8/1 is gonna be 1/8

MIDDLE SCHOOL

True or False: The dependent variable is normally found on the horizontal axis of line graphs, bar graphs, and pictographs. True False

Answer:

False.

Step-by-step explanation:

That is false. For y = x^2 the dependent variable is y. The vertical axis is used for the dependent variable.

MIDDLE SCHOOL

the distance traveled by a swinging pendulum decreases after each swing. The first wings distance was 625 mm, The second was 500 mm the third, 400. What was the swing distance be for the seventh swing?

Answer:

The swing distances form a geometric sequence with first term 625 and common ratio 500/625 = 0.8. The formula for the general term of such a sequence is ...

an = a1×r^(n-1)

Then the 7th term of the sequence will be ...

a7 = 625×0.8^(7-1) ≈ 163.84 . . . mm

Step-by-step explanation:

Answer:

163.84 mm

Step-by-step explanation:

The swing distances form a geometric sequence with first term 625 and common ratio 500/625 = 0.8. The formula for the general term of such a sequence is ...

an = a1×r^(n-1)

Then the 7th term of the sequence will be ...

a7 = 625×0.8^(7-1) ≈ 163.84 . . . mm