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3 years ago

If n(A)=40,N(B)=60AND N(AUB=80

Mathematics

1 answer:

Scrat [10]3 years ago

5 0

Answer:

What exactly is your questio

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Elimination_4x_2y=14 _10x+7y=_24

Gnesinka [82]

Answer:

The answer is $x=-\frac{50}{8}$ and $y=\frac{11}{2}.$

Step-by-step explanation:

Given:

-4x-2y=14

-10x+7y=-24

Now, to solve it by elimination:

$-4x-2y=14$ ......(1)

$-10x+7y=-24$ ......(2)

So, we multiply the equation (1) by 7 we get:

$-28x-14y=98$

And, we multiply the equation (2) by 2 we get:

$-20x+14y=-48$

Now, adding both the new equations:

$-28x-14y+(-20x+14y)=98+(-48)$

$-28x-14y-20x+14y=98-48$

$-28x-20x-14y+14y=50$

$-8x=50$

Dividing both the sides by -8 we get:

$x=-\frac{50}{8}$

Now, putting the value of $x$ in equation (1):

$-4x-2y=14$

$-4(-\frac{50}{8})-2y=14$

$\frac{200}{8} -2y=14$

$25-2y=14$

Subtracting both sides by 25 we get:

$-2y=-11$

Dividing both sides by -2 we get:

$y=\frac{11}{2}$

Therefore, the answer is $x=-\frac{50}{8}$ and $y=\frac{11}{2}.$

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3 years ago

Find an equation for the nth Term of a geometric sequence where the second and fifth terms or -8 and 512, respectively

zhenek [66]

Answer:

Step-by-step explanation:

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3 years ago

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Some one please help me on this I am very much dum

AURORKA [14]

I don’t know this one either bro

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3 years ago

Solve the linear system by substitution 3c-2y=16 5x+y=18

andrew11 [14]

It's x or c?
...
...
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6 0

3 years ago

What is the answer and how do I solve?

8_murik_8 [283]

Because it is a 90° angle and the legs are congruent, the legs intersect with the hypotenuse at the same angle, so the other, unnamed angle at the bottom left is equal to x.

Now we can state that:

2x + 90 = 180
2x = 90
x = 45

4 0

3 years ago

If n(A)=40,N(B)=60AND N(AUB=80​

If n(A)=40,N(B)=60AND N(AUB=80