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2 years ago

Two hundred percent more than 50 is? a).100 b).150 c).175 d).200 e).250

Mathematics

2 answers:

LenaWriter [7]2 years ago

6 0

150 is the answer I think :)

ivann1987 [24]2 years ago

3 0

$50+2\cdot50=50+100=150$

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2 years ago

Use an algebraic approach to solve the problem.

qaws [65]

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Her first exam score was a 78, her second exam score was a 89, and his third exam score was a 94.

Step-by-step explanation:

Use the formula for the mean: sum of elements / number of elements

Let x represent her first exam score.

Her second exam score can be represented by x + 11, since it was 11 points better than her first.

Her third exam score can be represented by (x + 11) + 5, since it was 5 points better than her second.

Plug in all of these expressions into the mean formula. Plug in 87 as the mean, and plug in 3 as the number of elements (since there are 3 scores):

mean = sum of elements / number of elements

87 = ( (x) + (x + 11) + (x + 11) + 5 ) / 3

Add like terms and solve for x:

87 = (3x + 27) / 3

261 = 3x + 27

234 = 3x

78 = x

So, her first score was a 78.

Find her second score by adding 11 to this:

78 + 11 = 89

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2 years ago

1. what are the domain and range of the function?

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1) domain of the first is ( R ) because of its root(3) and its range is (R) because of its root again

2)and domain of the last , is [0,+infinity)

and for its range , you can draw it such as picture and will be [0,- infinity)

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2 years ago

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