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3 years ago

Given that n(A) = 12, n(B) = 7 and n(AUB) = 10 Find n(AnB) Pls show working

Mathematics

2 answers:

Ber [7]3 years ago

5 0

Step-by-step explanation:

n(A)=12

n(B)=7

n(AUB)=10

n(AnB)=?

let,n(AnB) be x

We know that,

or, n(AUB) = n(A)+n(B)-n(AUB)

or, 10 =12+7+x

or, 10 =19+x

or, 10-19=x

or,9=x

so, the value of x is 9

then (AnB)=9

ValentinkaMS [17]3 years ago

3 0

Answer:

n(A) + n(B) - n(AnB) = n(AUB)

12 + 7 - n(AnB) = 10

19 - n(AnB) = 10

19 - 10 = n(AnB)

n(AnB) = 9

Step-by-step explanation:

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If you know the area and the base of a triangle, how can you find the height? Use the drop?down menus to explain your answer.

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4 years ago

If ∠G measures 45°, ∠F measures 82°, and f is 7 feet, then find g using the Law of Sines. Round your answer to the nearest foot.

DIA [1.3K]

The value of g across from angle G is 5feet

According to sine rule

$\frac{e}{sinE}=\frac{f}{sinF}=\frac{g}{sinG}$

Given the following

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Required

side g

Substitute the given values into the formula

$\frac{f}{sinF}=\frac{g}{sinG}\\ \frac{7}{sin82}=\frac{g}{sin45}\\\frac{7}{0.9903}=\frac{g}{0.7071}\\7.0686=\frac{g}{0.7071}\\g=7.0686*0.7071\\g=4.998\\g\approx5ft$

Hence the value of g across from angle G is 5feet

Learn more here: brainly.com/question/15018190

8 0

3 years ago

Read 2 more answers

GUYS PLEASE HELP ME PLEASE HELP HELP PLEASE HELP ASAP GUYS HELP!!!!!

slega [8]

Answer:

$SA=5\ yd^2$

Step-by-step explanation:

we know that

The surface area of the square pyramid is equal to the area of the square base plus the area of its four triangular faces

$SA=b^2+4[\frac{1}{2}(b)(h)]$

we have

$b=1\ yd\\h=2\ yd$

substitute

$SA=1^2+4[\frac{1}{2}(1)(2)]$

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3 years ago

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Ne4ueva [31]

Answer:

$y = \sqrt{85}$

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(11)²=(6)²+ (y)²

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y² =121 –36

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3 years ago