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3 years ago

I NEED HELP ASAP!!!!!!

Mathematics

1 answer:

miskamm [114]3 years ago

4 0

Answer:

y = 20/3 * x + 125/3

Question 4 : 3 hours study for score 55 (?)

Step-by-step explanation:

2 points (2, 55) (5,75) were chosen to plot the line of best fit, cuz 5 on the above and 5 below it.

y = mx + b

m = (75 - 55) / (5 - 2) = 20/3

b = y - mx = 55 - (20/3) * 2 = 125/3

Equation: y = 20/3 x + 125/3

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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 $n_1,n_2$ :

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.

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3 years ago

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alexgriva [62]

Answer:

Step-by-step explanation:

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1 year ago

Simplify quantity 10 x squared minus 32 end quantity over 4 quantity 5 x squared minus 32 end quantity over 2, quantity 5 x squa

irina1246 [14]

Answer:

Option B.

Step-by-step explanation:

The given expression is

$\dfrac{10x^2-32}{4}$

We need to find the simplified form of given expression.

Taking out GCF from the numerator.

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Cancel out common factors.

$\dfrac{5x^2-16}{2}$

The expression $\dfrac{5x^2-16}{2}$ is the simplified form of given expression.

Therefore, the correct option is B.

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Answer:-10

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Find the values of

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Slope:

−

y-intercept:

−

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3 years ago

Read 2 more answers

Como lo hago ?<br> ayúdenme por favor

34kurt

la respuesta para la ecuación es -5

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