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Nimfa-mama [501]
2 years ago
8

Chad was asked whether the following equation is an identity:

Mathematics
2 answers:
Goryan [66]2 years ago
7 0

Answer:

The equation is not an identity, because the term 12xy is missing

Step-by-step explanation:

Starting with the expression on the left of the identity, we operate to get an equivalent expression, as follows:

(3x + 2y)² =

= 9x² + 12xy + 4y² =

= 9x² + 12xy + 4y² - 4y² + 4y² =

= 9x² - 4y² + 12xy + 8y² =

= (3x - 2y)(3x + 2y) + 12xy + 2(2y)²

Mumz [18]2 years ago
5 0

Answer: He made a mistake in step 1

Step-by-step explanation:

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Anuta_ua [19.1K]

I end up with 625pi(27^2-14^2)

=635pi(504)

=315000pi lb-ft


3 0
2 years ago
Nick is 30 years less than 3 times Rays age. If the sum of their ages is 74,how old are each of the men? Solve and write an equa
zaharov [31]
Nick = n
Ray = r

n=3r-30
n+r=74

3r-30+r=74
4r-30=74
4r=104
r=26
n=26*3-30
n=78-30
n=48
Nick is 48 years old and Ray is 26 years old
Hope this helps.
5 0
2 years ago
What the number is 1/10 the value of 237
Troyanec [42]
1/10 the value of 237 means we must multiply 1/10 by 237

1/10 * 237 = 23.7

Hope this helps!
4 0
2 years ago
Which is the smallest 0.37 0.194 0.6 0.473 0.29
wolverine [178]

0.37

0.194

0.6

0.473

0.29

the smallest digit at tenth place is 1 in 0.194, so 0.194 is the smallest here

4 0
2 years ago
Read 2 more answers
Find the hcf of 144 and 180. if it is expressed in the form 13m-3, find the value of m​
BaLLatris [955]

Answer:

Step-by-step explanation:

To find the HCF of 144 and 180

By using product of prime method

Firstly express 144 as a product of it prime and express 180 as a product of it prime

140=2×2×2×2×3×3

180=2×2×3×3×5

Common factor =2×2×3×3

36

in term of m

m=36

13m-3

To find m

Substitute for m when m=36

13(36)-3=

465

8 0
2 years ago
Read 2 more answers
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