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kondor19780726 [428]
4 years ago
11

Jill got an 85% on a math test if there were 40 questions in total,how many did she get wrong?

Mathematics
2 answers:
KengaRu [80]4 years ago
5 0
Yeah she got 6 questions wrong

GrogVix [38]4 years ago
3 0
You can solve this by setting up a proportion. You can put the number of items correct over the total number. and substitute the unknown number with x.

\frac{85}{100} = \frac{x}{40}   Cross-multiply
3400 = 100x   Divide both sides by 100
34 = x

40 - 34 = 6

So, Jill got 6 questions wrong.
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Berta is planning a party for her friends. The room rental cost is $50 plus an additional $3 per person to cover food costs. Ber
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Answer:

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Step-by-step explanation:

If x represents the number of people at Berta's party, then the cost of food is 3x. Added to the $50 cost of room rental, the total charge Berta must pay will be ...

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She wants this to be at most $100, so her inequality is ...

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Berta can solve this by subtracting 50, then dividing by 3.

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Since x represents a number of <em>people</em>, and it is not possible (or desirable) to have 2/3 of a person show up, the maximum number of people that can attend Berta's party is 16.

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Fynjy0 [20]

Answer:

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