3 years ago

#7 please I don’t get how to do this

Mathematics

1 answer:

motikmotik3 years ago

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The gcf of two numbers less than or equal to 12 is 2. Their LCM is 20.What are the numbers?

bixtya [17]

We know:

$LCM(a,\ b)=\dfrac{ab}{GCF(a,\ b)}$

We have

$GCF(a,\ b)=2,\ LCM(a,\ b)=20,\ a\leq12,\ b\leq12$

Substitute:

$20=\dfrac{ab}{2}\qquad|\cdot2\\\\ab=40$

$40=1\cdot40=2\cdot20=4\cdot10=5\cdot8$

Only 4 and 10 meet the requirements of the question.

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40 and 1 NOT, because 40 > 12

20 and 2 NOT, because 20 > 12

5 and 8 NOT because GCF(5, 8) = 1

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3 years ago

19. What is the equation of the line in slope-intercept form that passes through the point (24,9) and 1/8

Y_Kistochka [10]

Answer:

y=1/8x+6

Step-by-step explanation:

y-y1=m(x-x1)

y-9=1/8(x-24)

y=1/8x-24/8+9

y=1/8x-3+9

y=1/8x+6

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3 years ago

8n^2-17<br><br><br> I NEED AN ANSWER

love history [14]

Answer: 37

Step-by-step explanation:

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3 years ago

The TSA and slanted height of cone are 374cm2 and 10cm respectively. Find radius

Afina-wow [57]

Answer:

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1 year ago

The ratio of boys and girls in a 4:3.If there are 20 boys, find the number of girls.

Elina [12.6K]

Answer:

There are 15 girls.

Step-by-step explanation:

The ratio is 4:3, meaning there are 7 parts.

4 parts= 20 (Boys)

This means 1 part is 20 divided by 4.

1 part= 5

3 parts= Amount of girls.

3 x 5 = 15.

There are 15 girls.

6 0

3 years ago

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