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3 years ago

An item on sale costs 85% of the original price. The original price was $55.

Mathematics

1 answer:

son4ous [18]3 years ago

7 0

Answer:

$46.75

Step-by-step explanation:

The amount the sale item costs now is 0.85($55) = $46.75.

That 85% is equivalent to 0.85.

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out of some students appeared in an examination 80% passed in mathematics 75% passed in english and 5% failed in both subjects i

Advocard [28]

Answer:

5000 students appeared in the examination.

Step-by-step explanation:

We solve this question using Venn probabilities.

I am going to say that:

Event A: Passed in Mathematics

Event B: Passed in English.

5% failed in both subjects

This means that 100 - 5 = 95% pass in at least one, which means that $P(A \cup B) = 0.95$

80% passed in mathematics 75% passed in english

This means that $P(A) = 0.8, P(B) = 0.75$

Proportion who passed in both:

$P(A \cap B) = P(A) + P(B) - P(A \cup B)$

Considering the values we have for this problem

$P(A \cap B) = P(A) + P(B) - P(A \cup B) = 0.8 + 0.75 - 0.95 = 0.6$

3000 of them were passed both subjects how many students appeared in the examination?

3000 is 60% of the total t. So

$0.6t = 3000$

$t = \frac{3000}{0.6}$

$t = 5000$

5000 students appeared in the examination.

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3 years ago

The Bigtown football team outscored its opponents 5:2 last season. If their opponents scored 38 points, how many points did Bigt

mariarad [96]

The answer would be 114. I did 3 times 38 and thats what i got. I hope it helps:D This is from your friendly Tolkien fan.

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3 years ago

Read 2 more answers

How do I do problems 4-6

maria [59]

#4 is actually f(x) + 18. #5 is f(x) + 201, #5 is f(x) + 316.

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3 years ago

If AC = 36 and BC = 18, find AD. Round to the nearest tenth, if necessary.

KengaRu [80]

Using: a^2 + b^2 = c^2 (pythagoras theorem)
where 'a' and 'b' are the legs of a right triangle, c is the hypotenuse
compare the triangle I just drew to the triangle you have for your problem
you'll see that a = unknown b = 18 c = 36
a=18sqrt3
=31.2

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3 years ago

What is the value of -16 +9?

ki77a [65]

Answer

the answer is -7

Step-by-step explanation: −(16−9) =-7

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3 years ago