Question

/250ਵਰਗ ਮੀ - 300 ਵਰਗ ਮੀ ਨਾਲੋਂ 150 ਵਰਗ ਮੀ - 200 ਵਰਗ ਮੀ ਖੇਤਰਫਲ ਦੇ ਵਿਚਕਾਰ ਕਿੰਨੇ ਘਰਾਂ ਦਾ ਅੰਤਰ ਹੈ?

Answer 1

Answer:

plzz hindi me likha karo yrr esa kuch aata nhi....

Answer 2

Complete question :- ਹੇਠ ਲਿਖਿਆਂ ਵਿੱਚੋਂ ਕਿਹੜਾ ਵਿਅੰਜਕ ਪ੍ਰਮੇਯ

ਸੰਖਿਆਵਾਂ ਦੇ ਗੁਣਾ ਦੇ ਸਹਿਚਾਰਤਾ ਗੁਣ ਨੂੰ ਦਰਸਾਉਂਦਾ ? Which of the following expressions shows that rational numbers are associative under multiplication. निम्नलिखित में से ऐसे कौन

सा व्यंजक यह दर्शाता है कि परिमेय संख्याओं का गुणन सहचारी है ?

(Refer to image also for options.)

Solution :-

As we know that,

Rational numbers follow the associative property for addition and multiplication.

Suppose x, y and z are rational numbers , then :

• for addition : x + (y + z)=(x + y) + z
• for multiplication : x(y * z) =(x *y)z.

checking Options one by one now, we get,

Option 1) :- (2/3)(-6/7 * 3/5) = (2/3 * -6/7) * 3/5

as we can see,

• a(b * c) = (a * b) * c

Therefore, Option (1) shows associative property under multiplication.

Option 2) :- (2/3)(5/4 + 6/3) = (2/3 * 5/4) + (2/3 * 6/3)

as we can see,

• a*(b+c) = (a*b) + (a*c)

Therefore, Option (2) shows Distributive Property under multiplication.

Option 3) :- 4/5 * 5/7 = 5/7* 4/5

as we can see,

• a * b = b * a

Therefore, Option (3) shows Commutative Property under multiplication.

Option 4) :- 2/4 + (-2/4) = 0

as we can See,

• a * (-a) = 0

Therefore, Option (4) shows Inverse Property uinder addition .

Hence Option (1) shows associative Property under multiplication and is correct answer.

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if a^2+ab+b^2=25

b^2+bc+c^2=49

c^2+ca+a^2=64

Then, find the value of

(a+b+c)² - 100 = ...

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