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oee [108]
3 years ago
15

Anybody good at math?

Mathematics
1 answer:
Lerok [7]3 years ago
8 0
Yup! We're all pretty good here. :)
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Helpp plzz will mark brainleast
vladimir1956 [14]

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can we see the text and part a

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2 years ago
Someone plz help me lol
riadik2000 [5.3K]

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3 years ago
The GCD(a, b) = 9, the LCM(a, b)=378. Find the least possible value of a+b.
denis-greek [22]
\mathrm{gcd}(a,b)=9\implies9\mid a\text{ and }9\mid b\implies9\mid a+b

which means there is some integer k for which a+b=9k.


Because 9\mid a and 9\mid b, there are integers n_1,n_2 such that a=9n_1 and b=9n_2, and


\mathrm{lcm}(a,b)=\mathrm{lcm}(9n_1,9n_2)=9\mathrm{lcm}(n_1,n_2)=378\implies\mathrm{lcm}(n_1,n_2)=42

We have 42=2\cdot3\cdot7, which means there are four possible choices of n_1,n_2:

1, 42
2, 21
3, 14
6, 7

which is to say there are also four corresponding choices for a,b:

9, 378
18, 189
27, 126
54, 63

whose sums are:

387
207
153
117

So the least possible value of a+b is 117.
6 0
3 years ago
8y 2 + 17y + 2<br> What’s the answer for this question
Novosadov [1.4K]
So you first need to calculate 8y 2 which is basically 8x2 which equals 16 then add 16y + 17y which is 33 so your answer is 33y+2
3 0
3 years ago
Please help asap!! Is this correct? If not can I please have some help.
Leona [35]

Answer:

Yes, that is correct.

Step-by-step explanation:

3 0
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