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Sever21 [200]
3 years ago
10

Factor (16a2 - 49) completely

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
5 0

Answer:

(4a+7)(4a-7)

Step-by-step explanation:

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2 years ago
HELP ASAP! The number of entertainment websites in 1995 wass 54. By 2004 there were 793 entertainment website..
AleksandrR [38]
<h3>Answer: Choice A. 82 websites per year</h3>

=============================================================

How I got that answer:

We have gone from 54 websites to 793 websites. This is a change of 793-54 = 739 new websites. This is over a timespan of 2004-1995 = 9 years.

Since we have 739 new websites over the course of 9 years, this means the rate of change is 739/9 = 82.1111... where the '1's go on forever. Rounding to the nearest whole number gets us roughly 82 websites a year.

----------

You could use the slope formula to get the job done. This is because the slope represents the rise over run

slope = rise/run

The rise is how much the number of websites have gone up or down. The run is the amount of time that has passed by. So slope = rise/run = 739/9 = 82.111...

In a more written out way, the steps would be

slope = rise/run

slope = (y2-y1)/(x2-x1)

slope = (793 - 54)/(2004 - 1995)

slope = 739/9

slope = 82.111....

3 0
3 years ago
Use 4's and any of the operations: +, -, × and ÷ to write number sentences.
Furkat [3]

Answer:

Step-by-step explanation:

(4x4)÷(4+4) = 2

(4x4)÷ (4 +4) - 4= 4

(4+4)+(4÷ 4)-  4= 5

(4+4)- (4÷4) - 4= 3

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It is. Only you dont get a whole number.

Step-by-step explanation:

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If the mass of a proton is 2.34 × 10–14 grams, what is the mass of 1,000 protons?
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