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Varvara68 [4.7K]
2 years ago
15

The sum of Eric’s and Bob’s weights is 9 times the difference of their weights. The positive difference of their weights is also

240 pounds less than the sum. If Eric weighs less than Bob, find Bob’s weight.
Can you use the elimination method please? Thx
Mathematics
1 answer:
Pie2 years ago
6 0

Answer:

<u>150</u>

Step-by-step explanation:

So I will shorten Eric, and Bob's names as E, and B.

So the equations are this

B-E = B+E - 240, E as Eric, and B as Bob, and this E+B=9(E-B)

Move the variables and you get

-2E =- 240

Just divide them both by -2

and E=120

So when we know the value of E we can just plug it into the 1st question

120+B=9B+1080

Moves the Variables and numbers to the other side

8B=1200

1200/8= 150

B=150

There is Bob's weight

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The recycling plant processes 480 tons of glass per day.

Step-by-step explanation:

Quantity of glass recycled each minute = \frac{1}{3}\ tons

We know that;

1 hour = 60 minutes

Therefore;

Quantity of glass recycled in one hour = \frac{1}{3}*60=20\ tons

1 day = 24 hours

Quantity of glass recycled in 24 hours = 24*20 = 480 tons

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Keywords: multiplication, fraction

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3 years ago
Jennie has 7 tickets for carnival rides. The Ferris wheel costs 4 tickets, The roller coaster costs 6 tickets. the merry-go-roun
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6 0
3 years ago
At your school, the building is 20 feet tall, a tree's height is 252 inches, and the flagpole is 6 yards high. Which of the thre
timurjin [86]
First, all the heights have to be converted to similar units, say feet.

Therefore,
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Please help with math
Andru [333]

Answer:

Scale factor  = 3

Step-by-step explanation:

Using similar triangles

AT/AG = AB/AC

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Cross multiply

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Expand

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x = 120/24

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For the larger triangle;

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AC = 3(5)-10

AC =15-10

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AB = x+10

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For the scale factor;

Since AT/AG = AB/AC

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Answer:

<AED

Step-by-step explanation:

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