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3 years ago

Alex runs 3 laps around a course that is 1 3/4 miles long how far did he run?

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

6 0

That would be 5.25 miles

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Tuesday’s attendance was 70% of Monday’s attendance, 50. What was Tuesday’s attendance?

lara [203]

Answer:

Step-by-step explanation:

100 / 50 = 2

70 / 2 = 35

3 0

3 years ago

What is 8.6x+2.2(2x-5)=54

Alex787 [66]

$8.6x+2.2(2x-5)=54\\\\8.6x+(2.2*2x)+[2.2*(-5)]=54\\\\8.6x+4.4x-11=54\\\\13x-11=54\\\\13x=65\\\\\\x=5$

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3 years ago

Eva has £6.05 in her moneybox.

PIT_PIT [208]

Answer:

11 of 20p, 22 of 10p and 33 of 5p

Step-by-step explanation:

Eva has 20p, 10p and 5p coins, total of £6.05 = 605p

Let 20p=x, 10p=y, 5p=z

Then:

20x + 10y + 5z = 605
y : x = 2 : 1 ⇒ x= y/2
y : z = 2 : 3 ⇒ z= 3y/2

Rewriting the first equation considering next two:

10y + 10y + 7.5y = 605
27.5y = 605
y= 605/27.5
y= 22
x= y/2 = 22/2 = 11
z = 3y/2 = 3*11 = 33

Answer: 11 of 20p coins, 22 of 10p coins and 33 of 5p coins

3 0

3 years ago

Amanda spent a total of 70 minutes competing her chores this week. Write and solve an equation to represent the number of minute

gtnhenbr [62]

Answer:

28 minutes spent in washing the dishes.

Step-by-step explanation:

Given the table

Chore time in minutes

Sweeping 42

Dishes ?

Amanda spent a total of 70 minutes competing her chores this week

Total of 70 minutes spent

42 minutes spent in sweeping . to find the number of minutes Amanda spent in washing the dishes , subtract 42 minutes from the total time spent

let x be the number of minutes spent washing the dishes

$42+x=70$

To solve for x , subtract 42 from both sides

$42+x=70\\x= 70-42\\x=28$

28 minutes spent in washing the dishes.

4 0

3 years ago

Find the volume of the solid to the nearest unit.

kondaur [170]

Area of the cross section (Trapezium) :

1/2 (6 + 11) x 3 = 25.5 cm²

Volume = area x height = 25.5 x 3 = 76.5 cm³

6 0

3 years ago