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3 years ago

A pile of sand weights 90kg Ratio 2 : 3 : 7

1 answer:

6 0

Total ratio
2+3+7=12
Now find the weight of sand in each bag

Small bag
90×(2÷12)
=15 kg
Medium bag
90×(3÷12)
=22.5
Large bag
90×(7÷12)
=52.5

Hope it helps
rate me at brainly if i got it right

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yulyashka [42]

The value of x=20

Step-by-step explanation:

We need to find the value of x

We are given a right angle which is equal to 90°

So, all three angles must sum to 90°

Our equation will be:

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Solving and finding value of x

$x+2x+x+10=90\\4x=90-10\\4x=80\\x=80/4\\x=20$

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2 years ago

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murzikaleks [220]

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3 years ago

Some conference-goers saunter over to the Healthy Snack Box Machine, where they each choose one of ﬁve kinds of fruit, one of th

nalin [4]

Answer: There are 90 snack boxes.

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3 years ago

I don’t know how to graph two equations that 2w+2l=228 and l=w+42 and calculate the w and l.

Reika [66]

Solve for w and l by using the system of equations.

2l=-2w+228

l=w+42

Substitute w+42 for l in the first equation.

2(w+42)=-2w+228

2w+84=-2w+228

4w=144

w=36

Now substitute 36 for w in any equation to get l=78.

To graph the equations, first make them equal l.

l=-w+114 and l=w+42 are your equations. You ca plug in values for w to plot points on the graph.

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3 years ago