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Rufina [12.5K]
3 years ago
10

What is (2k+3)(2ksquared -4k-3)

Mathematics
1 answer:
saul85 [17]3 years ago
5 0
(2k + 3)(2k² - 4k - 3)
4k³ - 8k² - 6k + 6k² - 12k - 9
4k³ - 8k² + 6k² - 6k - 12k - 9
4k³ - 2k² - 18k - 9
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I just need the answers for questions 9 and 10
OverLord2011 [107]

Hello. To answer this questions, we need to remember some properties about fractions and equivalences.

Starting by the question 9:

Call the population 5 years ago by P. If the population has decreased 12000 in these 5 years and this represents a decrease of 3%, so it means the new population is 0.97P.

With this, we can make the following equation:

P - 12000 = 0.97P

Subtract 0.97P and sum 12000 in both sides of the equation

0.03P = 12000

Divide both sides of the equation by a factor of 0.03

P = 3600000

6 0
2 years ago
Plz help this is so hard
JulsSmile [24]
1/3x7/8 is the answer give me a thank plz
5 0
3 years ago
Read 2 more answers
Please help I need help with #17, 19, and 21
viktelen [127]

Answer:

Step-by-step explanation:

All the angles in a triangle have to add up to 180 degrees.

#17.)

45+50=95

180-95=85

x=85

#18.)

This one is a little different. The furthest two angles are complimentary which means that they add up to 180 degrees (a straight line.) Once you find the missing angle to that one, you can do the same thing as you did in #17.

180-118=62.

25+62=87

180-87=93

x=93

#21.)

For this one a slightly larger equation is needed. Since we don't have a definite number for the bottom left angle, we have to use x+2 as our number. We first have to find the bottom right angle though.

180-108=72

x+x+2+72=180

2x+74=180

2x=106

x=53

3 0
3 years ago
Read 2 more answers
Help me please show your work
Elenna [48]
C = 1.1b


constant = 1.1

hope it helps


7 0
3 years ago
Find the approximate area (in square inches) of a regular pentagon whose apothem measures 9 in.
ch4aika [34]
The answer is 21.6 hope this helps
5 0
3 years ago
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