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Scrat [10]
3 years ago
15

Two worded maths questions. Even if you know one answer it would help! Please also give working out if possible.

Mathematics
1 answer:
Fiesta28 [93]3 years ago
3 0

Answer:

  1. 675 litres
  2. 80 mL

Step-by-step explanation:

1. The total amount of oil in the two tanks at the start is ...

  total oil = n + (n +150) + 0 = 2n+150 . . . . litres

The amount of oil in tank C at the end is 1/3 this amount, or

  oil in tank C = (total oil)/3 = (2n+150)/3 . . . . litres

The amount pumped into tank C was 500 litres, so we have ...

  (2n +150)/3 = 500

  2n +150 = 1500 . . . . . . multiply by 3

  2n = 1350 . . . . . . . . . . . subtract 150

  1350/2 = n = 675 . . . . . divide by the coefficient of n

___

2. Let x represent the amount remaining in container A. Then 4x is the amount in tank B. Before the transfer, the amount in each container was the same, so ...

  x +120 = 4x -120 . . . . . A had 120 more than remains; B had 120 less

  240 = 3x . . . . . . . . add 120-x

  240/3 = x = 80 . . . divide by the coefficient of x

The amount of liquid left in container A is 80 mL.

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Alicia shoots A basketball at a hoop hundred times. She hits the backboard and Misses with 2/5 of her shots, hit the rim and mis
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Answer:

28 baskets

Step-by-step explanation:

Total Shots = 100

Backboard and miss = 2/5 of total

That is:

\frac{2}{5}*100=40

Rim and miss = 32% of total

That is:

32% = 32/100 = 0.32

0.32 * 100 = 32 shots

So, miss = 40 + 32 = 72

The rest, she makes, so left:

100 - 72 = 28 shots

Alicia makes 28 baskets (from 100)

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3 years ago
HELP PLS Describe two real-life situations that could be represented by the graph below
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the amount you walk by the hour?

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4 0
3 years ago
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Water has a density of 1.00g/cm^3 per cubic centimeter. What is the mass of half a liter of water?
anygoal [31]

Answer:

The mass of half a liter of water is 500g, that is, 0.5kg.

Step-by-step explanation:

Density is mass divided by the volume, that is:

d = \frac{m}{v}

Here, we have to be careful. Since the density is in grams per cm³, m has to be in grams and v in cm³.

We have that:

d = 1

What is the mass of half a liter of water?

One liter is 1000 cm³.

So half a liter is 1000/2 = 500 cm³, which means that v = 500

Then

d = \frac{m}{v}

1 = \frac{m}{500}

m = 500

The mass of half a liter of water is 500g, that is, 0.5kg.

7 0
3 years ago
Amelia needs to buy some cat food. At the nearest​ store, 2 bags of cat food cost $4.50. How much would Amelia spend on 6 bags o
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Answer:

$13.50

Step-by-step explanation:

<u><em>2 bags of cat food = $4.50</em></u>

<u><em>1 bag of cat food = 2/4.50</em></u>

<u><em>= 2.25</em></u>

<u><em>6 bags of cat food = 2.25*6</em></u>

<u><em>=13.50</em></u>

7 0
3 years ago
Read 2 more answers
Instructions
Nat2105 [25]
541/2 square in I hope this helps
3 0
3 years ago
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