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aleksandrvk [35]
3 years ago
15

2 x + y equals negative 9

Mathematics
1 answer:
Vilka [71]3 years ago
6 0

Answer:

The given equation which is in two variable is

 ⇒2 x + y =9

As we know that to get a unique solution you need two intersecting lines.

But here only one line is given.

On a single line there lie infinite number of points.

So, for different values of x we get different values of y or different values of y we get different values of x.

So , we can write the above equation as

either ⇒y=9-2 x Or x=9-2 y

I have drawn graph for you.

Thus , there are infinite number of solution of this equation. Like (0,9),(1,7),(2,5),(-2,13),(-1,11),(-3,15)......




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Evaluate (98 x 102) by using suitable identities.
GREYUIT [131]

Answer:

The answer is 9996

Step-by-step explanation:

Using the identity (x+a)(x+b) = x  ^2  +(a+b)x+ab

Writing 102 as 100+2 and 98 as 100−2

Hence (100+2)(100−2) = 100  ^2  +[2+(−2)]100+(2)(−2)

= 10000+(0)100−4

= 9996

The answer is 9996

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2 years ago
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I am a multiple of 3 and 5. the sum of my digits is 9. what number am I?
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Answer:

The answer is 45.

Step-by-step explanation:

This number is a multiple of 3 and 5, since it is divisible by both of these numbers.

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cricket20 [7]

Answer:

18

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To calculate the perimeter of the triangle we add all side lengths up

4 + 6 + 8 = 18

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The distance between the point (-3,4) and the point of origin
pickupchik [31]

Answer:

5

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2 years ago
Evaluate 3 to the power of 3+1⋅9+12<br><br> A.24<br> B.30<br> C.48<br> D.264
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24..... hope I helped
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