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Greeley [361]
3 years ago
10

Please help me with this

Mathematics
1 answer:
luda_lava [24]3 years ago
8 0
Distributive property!

2 * 4x = 8x
2 * 9 = 18

8x - 9

3 * 7 = 21
3 * x = 3x

8x - 9 + 21 - 3x

5x + 12

I hope this helped! So sorry if it’s incorrect
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What is the surface area of the regular pyramid given below?
yuradex [85]

For this case we have by definition, that the total surface area of a regular pyramid with a square base is given by:

SA = \frac {1} {2} p * S + A_ {b}

Where:

p: It is the perimeter of the base

S: It's the inclination

A_ {b}: It is the area of the base

Substituting:

A_ {b} = 7 ^ 2 = 49units ^ 2\\p = 7 + 7 + 7 + 7 = 28units\\S = 10units\\SA = \frac {1} {2} 28 * 10 + 49\\SA = 140 + 49\\SA = 189 \ units ^ 2

ANswer:

Option B

3 0
4 years ago
A pile of newspaper was 17 3/4 inches high. Each consecutive week for the next 5 weeks the height of pile increase by 8 7/12 inc
Murljashka [212]

Answer: the height in inches, of the pile after 3 weeks is 34 11/12 inches

Step-by-step explanation:

Each consecutive week for the next 5 weeks the height of pile increase by 8 7/12 inches. Converting 8 7/12 inches to improper fraction, it becomes 103/12 inches. The height is increasing in an arithmetic progression. The formula for determining the nth term of an arithmetic sequence is expressed as

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Where

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n represents the number of terms in the sequence.

From the information given,

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7 0
3 years ago
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Bezzdna [24]

Answer:

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Step-by-step explanation:

So here are two examples

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<em>Example 2</em>

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Here to write this in scientific notation you move the decimal place to the right.

You would move it 6 digits to the right so the exponent would be -6

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lapo4ka [179]

Answer:

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Dafna11 [192]
Well first of this makes sense because you need to make sure your rug will fit.  So anyways, first lay your rug out on a flat surface, grab your yardstick, lay it on the rug to find the length and then the width.  you then know the size of your rug(assuming its square).  You can do the same thing in the room you want it in.  
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