3 years ago

If two rays share a common endpoint, then they will always form a line

Mathematics

1 answer:

Monica [59]3 years ago

4 0

Unless they are opposite rays, then yes, they will always form a line.

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Scores are 78,81,83, and 76 what must she earn on the fifth test to earn an average test score of 81

iogann1982 [59]

The average value of a data set is equal to the sum of each entry divided by the number of entries. In this case, we have 5 scores, so we can find set up the following equation where x is the fifth score:

$\dfrac{78+81+83+76+x}{5} = 81$

Now solve for x:

$78 + 81 + 83 + 76 + x = 81(5)$

$318 + x = 405$

$x = 87$

The fifth score must be 87.

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3 years ago

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Helena had a balance of $14.48 left on a gift card. She bought a muffin each for her, and five of her friends. The cost of each

Ivenika [448]

She spent $6.12 on the muffins for her and her friends, and she has $8.36 left on her gift card. By multiplying 6 by $1.02, you get the amount she spent, and by subtracting $14.48 by $6.12, I find how much she has left on her gift card.

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3 years ago

PLEASE ANSWER ASASSP!!!!!!!!!!!!!!!!!!!!<br> Sovle the equation<br> 6 (y + 1.5) = -18<br> What is y?

Ede4ka [16]

Answer:

6(y+1.5)=-18

6y+9=-18 -9

6y=-27 ÷6

y=-4.5

Step-by-step explanation:

prove me wrong

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