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4 years ago

If set A has 4 elements and B has 3 elements then set n(AXB) is a) 12 b) 14 c) 24 d) 7

Mathematics

1 answer:

Karo-lina-s [1.5K]4 years ago

8 0

Answer:

The correct option is a.

Step-by-step explanation:

Given information:

Number of elements in set A = 4

Number of elements in set B = 3

We need to find n(A × B). It means we have to find the number of elements in set A × B.

If P and Q are two sets with elements m and n respectively, then the number of element in the set P × Q is m × n.

$n(A\times B)=n(A)\times n(B)$

$n(A\times B)=4\times 3$

$n(A\times B)=12$

The value of n(A × B) is 12. Therefore the correct option is a.

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Find the value of x.

castortr0y [4]

Answer: x= 19

Step-by-step explanation:

RS =~ ST presumably reads segment RS is congruent to segment ST, i.e. the same length.

Then the triangle is isosceles, and angle SRT = angle STR. Angle STU = 180-angle STR.

SRT = 3x - 48, STU = 9x, so STR = 180-9x

SRT = STR

3x - 48 = 180 - 9x

3x + 9x = 180 + 48

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4 years ago

Find a2 and a3 for the geometric sequence 4, a2, a3, 108.

LekaFEV [45]

9514 1404 393

Answer:

a2 = 12

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Step-by-step explanation:

Terms of a geometric sequence have a common ratio. If we call that ratio r, then we have ...

a2 = 4r

a3 = (a2)r = 4r^2

108 = (a3)r = 4r^3

27 = r^3 . . . . . . . . . . . divide by 4

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3 0

3 years ago

What fraction is greater than 1/2 but less than 3/4

aliya0001 [1]

1/2 = 50%

3/4 = 75%

So something in between that could be 2/3 (which equals 66.67% )

A few others could be: 3/5 ( equals to 60% ) , 7/10 ( equals 70%)

Hope that helps :)

5 0

3 years ago

Read 2 more answers

Without completing decide whether the value of each expression is on is much smaller than 1 close to 1 or much greater than 1

xxMikexx [17]

Answer:

Step-by-step explanation:

1) Larger

2) Less/Close

3) Less

4) Less

5)Less

6) Close

here is a tip if you need help with a question use

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3 years ago

Examine the diagram and information to answer the question.

Morgarella [4.7K]

Answer:

23.4 units

Step-by-step explanation:

Given the point of the vertices of triangle ABC as A(−5,1), B(2,1), and C(6,4).

The distance (d) between two points X (x₁ , y₁) and Y(x₂, y₂) is given as:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ . We can use this to calculate the length of the sides of the triangle. Therefore:

$AB=\sqrt{(2-(-5))^2+(1-1)^2}=\sqrt{7^2}=7\\ AC=\sqrt{(6-(-5))^2+(4-1)^2}=\sqrt{11^2+3^2}=11.4\\\\BC=\sqrt{(6-(2))^2+(4-1)^2}=\sqrt{4^2+3^2}=5\\$

The perimeter of the triangle ABC = AB + AC + BC = 7 + 11.4 + 5 = 23.4 units

4 0

3 years ago