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lawyer [7]
3 years ago
13

How do u fully factor 3(x+5)^2 + 27(x-5)-66

Mathematics
1 answer:
diamong [38]3 years ago
7 0

First simplify the equation by distibuting

3(x+5)(x+5) + 27(x-5)-66 becomes

3x^2 + 30x + 75 + 27x - 135 - 66

simplify

3x^2 + 57x - 126

factor out a gcf

3(x^2 + 19x - 42)

then factor once more to recieve

3(x + 2)(x -21)

Did you write the problem incorrectly?

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2. The 2002 Denali earthquake in Alaska had a Richter scale magnitude of 6.7. The 2003 Rat Islands earthquake in Alaska had a Ri
HACTEHA [7]

Answer:

the building strong enough to withstand the denali quake

Step-by-step explanation:

denali quake 6.7  x 70 = 469

the building in denali should be strong enough to withstand an earthquake of that magnitude  

rat island quake 7.8 x 30 = 234

the building in the rat islands  should be strong enough to withstand an earthquake of that magnitude  

3 0
4 years ago
Nico wants to use a horizontal number line to compare 1 3/4
e-lub [12.9K]

Answer:

1 3/4 is greater than 1.5.

Step-by-step explanation:

1. To make a line that measures 1 3/4, make 2 regular lines.

2. Divide one of the lines into 4 equal sections and erase the one section and leaving you with 1 3/4.

To make the 1.5:

1. Make a line and make another line but that is half of the length of the previous line.

6 0
4 years ago
Read 2 more answers
Using only the values given in the table for the function f(x) = x^3 - 3x - 2 what is the interval of x-values over which the fu
Nataly [62]

Answer:

3 = 3(x² - 1) We know, any Function f(x) decrease s in interval [a, b] when f'(x) < 0 ... -1 < x < 1. Hence, function f(x) = x³ - 3x - 2 , is decreased in (-1, 1).

4 0
3 years ago
Find the average distance each data value in the set is from the mean. Round
lara [203]

Answer:

the average distance from the mean is:

                       $ 7.2

step-by-step explanation:

we are given data points as:

$7, $20 , $9 , $35 , $12 , $15 , $7 , $10 , $20 , $25 , $7 , $20 , $9 , $35 , $12 , $15 , $7 , $10 , $20 , $25

the mean of the data set is:

now we are asked to find the average distance from the mean or mad of the data.

the absolute difference of each data point from mean is calculated as follows:

|7-16|=9

|20-16|=4

|9-16|=7

|35-16|=19

|12-16|=4

|15-16|=1

|7-16|=9

|10-16|=6

|20-16|=4

|25-16|=9

|7-16|=9

|20-16|=4

|9-16|=7

|35-16|=19

|12-16|=4

|15-16|=1

|7-16|=9

|10-16|=6

|20-16|=4

|25-16|=9

the answer is: $ 7.2

3 0
3 years ago
HELP I NEED THIS ANSWER ASAP
tester [92]

Answer:

10.4% or 13/125

Step-by-step explanation:

5 perfect squares in the set of numbers

13 odd numbers

(5/25) x (13/25) = 0.104

0.104 x 100 = 10.4%

i hope its right

4 0
2 years ago
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