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3 years ago

8

The area of a right triangle is 25 square

2 answers:

Ray Of Light [21]3 years ago

8 0

Answer:

Step-by-step explanation:

Remember, double the area and then divide by the known side length. To calculate the area of a triangle, we multiply the base times the height and divide by 2. If you are given the area, follow the steps backwards. You will multiply by 2 and divide by the given length.

mixer [17]3 years ago

5 0

Answer: They are all wrong

Step-by-step explanation: it’s C

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20 people applied for a job. Everyone either has a school certificate or diploma or even both. If 14 have school certificates an

STatiana [176]

Given:

Either has a school certificate or diploma or even both = 20 people

Having school certificates = 14

Having diplomas = 11

To find:

The number of people who have a school certificate only.

Solution:

Let A be the set of people who have school certificates and B be the set of people who have diplomas.

According to the given information, we have

$n(A)=14$

$n(B)=11$

$n(A\cup B)=20$

We know that,

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

$20=14+11-n(A\cap B)$

$20=25-n(A\cap B)$

Subtract both sides by 25.

$20-25=-n(A\cap B)$

$-5=-n(A\cap B)$

$5=n(A\cap B)$

We need to find the number of people who have a school certificate only, i.e. $n(A\cap B')$ .

$n(A\cap B')=n(A)-n(A\cap B)$

$n(A\cap B')=14-5$

$n(A\cap B')=9$

Therefore, 9 people have a school certificate only.

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3 years ago

Write the equation of a line in slope intercept form that passes through the point ( -8, 2) and is parallel to the line y=1/4x−3

mel-nik [20]

Y-2=1/4(x+8) is your answer
Explanation
Desmos

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jeyben [28]

8.213, 8.214 just add 1 hundred to the end

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Firlakuza [10]

Answer:

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Step-by-step explanation:

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Vadim26 [7]

Answer:

4

Step-by-step explanation:

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These are ± 1 and ± 7

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