The teacher kept track of how long it took students to finish a test. After 20 minutes, 3 students had finished the test. How long did it take until 8 students were finished?

A.
10 minutes

B.
50 minutes

C.
60 minutes

D.
80 minutes

Answers

Answer 1

Answer: so if they all took the same rate then
20 minutes=3 students
divideb y 3
6 1/6 min=1 student
multply by 8
48 and 8/6=8 student=49 and 2/6=49 and 1/3 min=49 min and 20 seconds

the answer is B 50 minutes

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Michael's mom paid $2.40 for a 3/4 pound box of cereal.How much is that per pound?

Answers

Take $2.40 and divide by 3/4. That gives you $3.20 per pound.

First you would change 3/4 to a decimal number 0.75 Then divide 2.40 by 0.75 which gives you 3.2
Hope this will help you

Luis has a cooler filled with cans of soda. For every 5 cans of coke, there are 3 cans of sprite. If there are 25 cans of coke , how many cans of sprite are there?

Answers

For 25 cans of coke, there will be 15 cans of sprite.

What is Unitary Method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given is a cooler filled with cans of soda such that for every 5 cans of coke, there are 3 cans of sprite.

For every 5 cans of coke there are 3 cans of sprite.

Then, for every 1 can of coke there will be 3/5 cans of sprite.

Hence, for 25 cans of coke, there will be (3/5 x 25) = 15 cans of sprite.

Therefore, for 25 cans of coke, there will be 15 cans of sprite.

To solve more questions on Unitary method, visit the link below-

brainly.com/question/9486971

#SPJ5

So you're trying figure out what you multiply 5 by to get 25, so that you can multiply that same number by 3 to figure out how much sprite there is.
5x=25
X=5

So multiply 3 by 5(the answer you just got), which is 15. 15 sprites.

ABC has vertices A(-1,6), B(2,10) and C(7,-2). Find the measure of each angle of the triangle. Round decimal to the nearest tenth

Answers

Answer:

Angle A = 98.1°

Angle B = 59.5°

Angle C = 22.4°

Step-by-step explanation:

When given vertices (x1,y1) ,(x2,y2), we would be using the formula:

√(x2 - x1)² + (y2 - y1)²

ABC has vertices A(-1,6), B(2,10) and C(7,-2)

Side AB = A(-1,6), B(2,10)

√(x2 - x1)² + (y2 - y1)²

= √(2-(-1))² + (10 - 6)²

= √(3² + 4²)

= √9+16

= √25

= 5

Side BC = B(2,10), C(7,-2)

√(x2 - x1)² + (y2 - y1)²

√(7-2)² + (-2 - 10)²

= √5² +(-12)²

= √(25 + 144)

= √169

= 13

Side AC = A(-1,6), C(7,-2)

√(x2 - x1)² + (y2 - y1)²

√(7-(-1))² + (-2 - 6)²

= √6² +(-8)²

= √(64 + 64)

= √128

= 11.314

To find the measure of each angle we would be using the cosine rule

Where

a² = b² + c² - 2bc × Cos A

b² = a² + c² - 2ac × Cos B

c² = a² + b² - 2ab × Cos C

Sketching a triangle we find out that

Side AB = c = 5

Side AC = b = 11.314

Side BC = a = 13

Hence

1) for Side BC = a

a² = b² + c² - 2bc × Cos A

Cos A = b² + c² - a²/ 2bc

Cos A = 11.314² + 5² -13²/(2 × 11.313 × 5)

A = arc cos[(11.314² + 5² -13²)/(2 × 11.313 × 5)]

A = 98.13°

To the nearest tenth = 98.1°

2) for Side AC = b

b² = a² + c² - 2ac × Cos B

Cos B = a² + c² - b²/ 2ac

Cos B = 13² + 5² - 11.314/2 × 13 × 5

B = arc cos[ (13² + 5² - 11.314)/(2 × 13 × 5)]

B = 59.49°

To the nearest tenth = 59.5°

3) for Side AB = c

c² = a² + b² - 2ab × Cos C

Cos C = a² + b² - c²/ 2ab

Cos C = 13² + 11.314² - 5²/ 2 × 13 × 11.314

C = arc cos[(13² + 11.314² - 5²)/ (2 × 13 × 11.314)]

C = 22.38°

To the nearest tenth = 22.4°

Renee, susan, and Martha share the cost to rent a vacation house for a week renee will pay 40 percent
susan will pay 0.35 of the cost
Martha will pay the rest
she thinks she will pay 1/3 of the cost is she correct ?