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1 year ago

PLEASE HELP ME!! please

Mathematics

1 answer:

spin [16.1K]1 year ago

3 0

Answer:

(c). 3

Step-by-step explanation:

Table # 3 represent a function

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2 years ago

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.

4 0

2 years ago

Eliminate the parameter. x = 5t, y = t + 8 (2 points)

maxonik [38]

Answer: y = $\frac{1}{5}$ x + 8

Step-by-step explanation:

This is asking us to remove the parameter. In other words, we want an equation with only the relation between x and y, so we need to remove the t. There are a few ways to do this, but I am going to set one equation equal to t and then plug it into the next one.

Given:

x = 5t

Divide both sides of the equation by 5:

t = $\frac{1}{5}$ x

Given:

y = t + 8

Plug in:

y = ( $\frac{1}{5}$ x) + 8

Answer:

y = $\frac{1}{5}$ x + 8

8 0

1 year ago