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IrinaVladis [17]
3 years ago
14

The sum of a student's three score is 246. if the first is 14 points more than the second, and the sum of the first two is 6 mor

e than twice the third, what was the first score?
Mathematics
1 answer:
mr_godi [17]3 years ago
7 0
Let the second score = x
⇒ second score = x

<span>the first is 14 points more than the second
</span>⇒ first score = x + 14

<span>the sum of the first two is 6 more than twice the third
</span>⇒ third score = 1/2 (x + x + 14 - 6) = x + 4

<span>The sum of a student's three score is 246
</span>⇒ x + (x + 14) + (x + 4) = 246
<span>
Solve x:
</span>x + x + 14 + x + 4 = 246
3x + 18 = 246
3x = 228
x = 76

second score = x = 76
first score = x + 14 = 76 + 14 = 90

Answer: 90
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At the start of a tennis match Ivan had 28/32 quart of water in his water bottle. He drank water from the bottle during the matc
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One out of 3 gym members say they spent 5 hours per week at the gym. If there are 150 people working out at the gym, how many wi
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8 0
3 years ago
Hamburger sells 3 pounds for six dollars if Samantha 510 pounds of hamburger how much will she pay
Lina20 [59]
I believe you meant to say that if Samantha bought 510 pounds of hamburger, how much will she pay?
 
Now from the information we already have, we know that 3 pounds of hamburger will cost 6 dollars. 

The next thing we need to know is how much one pound of hamburger will cost. This will help us calculate  how much the rest will cost.

we now form an equation to assist us.
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(where x represents the unknown price of one pound of hamburger)

Now we must cross-multiply:

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Therefore  Samantha will pay 1, 020 dollars for 510 pounds of hamburger.






5 0
3 years ago
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