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2 years ago

What does the digit 2 represent in 701,280

Mathematics

1 answer:

dlinn [17]2 years ago

3 0

Step-by-step explanation:

hundreds

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Let A = {x : 2x² + 3x - 2 = 0} and B = {x : x² + 3x - 4 = 0 } find (A U B) × (A Π B)

ivann1987 [24]

Given :

A = {x: 2x² + 3x - 2 = 0 }
B = {x : x² + 3x - 4 = 0 }

To find :

(A U B ) × (A Π B )

Solution :-

The first set is ,

A ={x : 2x² + 3x - 2 = 0}

Solving the Quadratic equation ,

2x² + 3x - 2 = 0
2x² + 4x - x - 2 = 0
2x( x + 2) -1( x + 2 ) = 0
(2x -1) ( x + 2) = 0
x = 0.5 , -2

Hence ,

A ={0.5, -2}

The second set is ,

B ={ x :x² + 3x - 4 = 0 }

Solving the Quadratic equation ,

x² + 3x - 4 = 0
x² + 4x - x - 4 = 0
x( x + 4)-1 ( x +4) = 0
(x + 4) ( x -1) = 0
x = 1 , -4

Hence ,

B ={1,4}

Now ,

A U B = { 0.5 , 1 , 4 , -2}
A Π B = {∅ }

Since AΠ B is a null set , hence ,

A × B = {∅}

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2 years ago

What is the substitution for 3x+4y^2 if x= -2 and y=3?

solniwko [45]

Answer:

Step-by-step explanation:

$3x+4y^2\\\\\text{Substitute the value of x = -2 and y = 3 to the expression:}\\\\3(-2)+4(3^2)\qquad\text{use PEMDAS}\\\\=-6+4(9)=-6+36=30$

5 0

3 years ago

What is 6/1 divided by 3/4 if i put it in the wrong way.. then SORRY

Pani-rosa [81]

The answer is 8

Step by step:

6x4/1x3 =

24/3

(24/3)/(3/3) = 8

5 0

2 years ago

Read 2 more answers

What is (0,-2) a solution of 2x-4y=-8

Paladinen [302]

Answer:

Step-by-step explanation:

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2 years ago

Ben says the angle is an acute angle. Jeff says the angle is less than a straight angle. Explain whether their statements are co

Dahasolnce [82]

Answer:

sometimes, if their average angle is over 45 degrees

never are 2 obtuse angles summing to 180 degrees

always. two 90 degree angles always sum to 180 which is a straight line

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2 years ago