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lara [203]
3 years ago
8

Can someone please solve 2/8 = n/20

Mathematics
2 answers:
Lina20 [59]3 years ago
6 0

Answer:

n=5

Step-by-step explanation:

2/8 = n/20

Using cross products

2 * 20 = 8*n

40 = 8n

Divide each side by 8

40/8 = 8n/8

5 =n

ladessa [460]3 years ago
3 0

Answer:

n=5

Step-by-step explanation:

We have the following expression \frac{2}{8} = \frac{n}{20} and we must solve for variable n.

To solve the equation multiply by 20 on both sides of the equality and you will get the following

20*\frac{2}{8} = 20*\frac{n}{20}

\frac{20*2}{8} = \frac{20n}{20}

\frac{40}{8} = n

n= \frac{40}{8}

Finally we have that:

n=5

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3 years ago
Determine whether the lines x+ 7y= −3 and y = 7x + 25 are parallel, perpendicular, or neither. Justify your answer by showing al
Zielflug [23.3K]

Answer:

perpendicular

Step-by-step explanation:

Rewrite the equations

y = (-1/7)x - 3/7 -- L1

y = 7x + 25 -- L2

Slope of L1 x Slope of L2 = -1/7 x 7 = -1

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3 years ago
Jude says that the volume of a square pyramid with base edges of 7 in and a height of 7 in is equal to the volume of a cylinder
irakobra [83]

Answer:

Jude is not correct

Step-by-step explanation:

The volume of a square pyramid is given as:

V = a^2\frac{h}{3}

where a = base edge and h = height

Hence, the volume of the square pyramid with base edge of 7 in and height  of 7 in is:

V = 7^2*\frac{7}{3}

V = 114.3 in^3 ≅ 114 in^3

The volume of a cylinder is given as:

V = \pi r^2h

where r = radius and h = height

Hence, the volume of a cylinder with radius of 7 in and height of 7 in is:

V = \pi *7^2*7

V = 1077.57 in^3 ≅ 1078 in^3

Since their volumes are not equal, Jude is not correct.

8 0
4 years ago
Write the nth term of the following sequence in terms of the first term of the sequence.. 1, 8, 15, 22, . . .
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4 years ago
Read 2 more answers
NEED HELP ASAP! 15 points!
sertanlavr [38]

Step-by-step help:

399 - 75 = 324.

Now that we have the bonus out of the equation, the fraction is approximately

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Divide by 2 again,

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81 divided by 3 is 27.

So,

The answer is exactly 27.

Hope that helped!

I think maybe the first or second number line.

8 0
3 years ago
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