All categories

3 years ago

Ms. Johnson’s class running a food drive . The 20 students collected 180 cans .

Mathematics

1 answer:

Ivan3 years ago

5 0

Each student collected 9 cans each. Just divide 180 by 20. :))

You might be interested in

13. Solve the equation: y = 4x + ax + 6 for a.

I am Lyosha [343]

Answer:

a= (y-4x-6)/X

Step-by-step explanation:

Make ax the subject of the formulae

-ax=4x+6-y

Multiply both sides by minus (-)

ax= y-4x-6

Divide both sides by x

a= (y-4x-6)/x

4 0

3 years ago

A race car can complete 8 laps in 1/3 hour. At this rate, how many hours will it take the race car to complete 1 lap? 1/240 1/24

Marrrta [24]

Answer:

Step-by-step explanation:

The race car is doing 8 laps in 1/3 hour, in one hour the car is doing:

8laps * (1/3) hour) = 8*3 laps / 1hour = 24 laps/hour.

Now, to complete one lap, the car will it take:

1 lap * (1 hour / 24 laps) = 1/24 hours the race car requires to complete 1 lap. Right answer is:

8 0

3 years ago

The midpoint of AB is M (6,1). If the coordinates of A are (4, 8), what are the coordinates of B?

geniusboy [140]

Answer:

$B = (8,-6)$

Step-by-step explanation:

Given

$A = (4,8)$

$M = (6,1)$ -- Midpoint

Required

Find B

This question will be solved using midpoint formula;

$M(x,y) = (\frac{x_1 + x_2}{2},\frac{y_1 + y_2}{2})$

Where

$A(x_1,y_1) = (4,8)$

$M(x,y) = (6,1)$

Substitute these values in the midpoint formula;

$(6,1) = (\frac{4 + x_2}{2},\frac{8+y_2}{2})$

By comparison; we have:

$\frac{4 + x_2}{2} = 6$ -- (1)

$\frac{8 + y_2}{2} = 1$ -- (2)

Solving (1)

$\frac{4 + x_2}{2} = 6$

Multiply both sides by 2

$4 + x_2 = 12$

Subtract 4 from both sides

$x_2 = 8$

Solving (2)

$\frac{8 + y_2}{2} = 1$

Multiply both sides by 2

$8 + y_2 = 2$

Subtract 8 from both sides

$y_2 = -6$

Hence:

$B = (8,-6)$

3 0

3 years ago

Adding (4-7i)+(-11+9i)

Fofino [41]

your answer is -7+16i, because 4-11=-7 and 7i+9i is 16i

5 0

3 years ago

How do you solve this and what is the answer?

Pachacha [2.7K]

Answer:

Step-by-step explanation:

∠ABC = 1/2 ∠AOC

since we know ABC = 30° we can solve for AOC with a bit of Algebra

30 = 1/2 AOC

60 ° = AOC

:) does it make sense?

the formula about is for inscribed angles , that is an angle that touches the outside of the circle and then goes through the other side. :) Like ∠ABC

4 0

3 years ago