3 years ago

Brock and Buzz have 10 friends. Buzz has 2 fewer fiends than Brock. How many friends does Brock have?

Mathematics

2 answers:

Anuta_ua [19.1K]3 years ago

6 0

Buzz has 4 friends and Brock has 6.

The reason being is that Buzz has to have two less friend than Brock has, and yet still both have to add up to ten.

Oksana_A [137]3 years ago

6 0

Brock has 6 amd Buzz has 4. Brock cant have 8 because 8 + 6= 14, 7+5=12, 10+8=18, and so on, but 6+4=10 and they have 10 friemds between them.

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A customer pumps $35.40 total in gas and pays with a $50 bill. What is the amount of change the customer should receive?

djverab [1.8K]

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3 years ago

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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 $n_1,n_2$ :

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

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

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387
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So the least possible value of $a+b$ is 117.

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3 years ago

Armon added 1/10 and 8/100 whats the sum helpppp

DochEvi [55]

Answer:

18/100

Step-by-step explanation:

1/10 = 10/100

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3 years ago

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