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REY [17]
3 years ago
9

Factor 4x 2 + 12x + 5 . (2x + 5)(2x + 1)

Mathematics
1 answer:
swat323 years ago
8 0
4x^2 + 12x + 5=4x^2+2x+10x+5 \\  \\ =2x(2x+1)+5(2x+1)=(2x+5)(2x+1) \\  \\ \therefore4x^2+12x+5=(2x+5)(2x+1)
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What are positivly charged particles in an atoms nucleus called
gladu [14]

Answer:

proton is the word you're looking for.

7 0
2 years ago
Evelyn took a job that paid $100 the first week. She was guaranteed a raise of 2% each week. How much money will she make in all
Zanzabum
This is a growth exponential equation. 
It can be solved 2 ways, but one of them is long and cumbersome and not worth the effort. You could take 2% of the base number and keep doing it 8 times. 

The other way is to realize that 100$ + 2% of 100 dollars can be written as 2% = 2/100 = 0.02 and that can be written as
100( 1 + 0.02 ) = 100(1.02) Now if you want this to be raised 8 times, it will look like this
y = 100(1.02)^(n - 1) for any number of weeks
y(8) = 100(1.02)^7 = 114.87
So at week 1 she has 100 dollars and at week 8 she has 114.87 dollars.

Comment
Realize that if her boss does not want to give her compounded interest that she could still make
Ln = L_{8} = 100 + (n - 1)*0.02*100
L_{8} = 100 + 7*0.02*100 = 100 + 14. = 114
By compounding she makes a whole 0.87$ more. 


6 0
2 years ago
In need of help please
Alisiya [41]

Answer:

Step-by-step explanation:

1-4

1

n=30/1

so it would be (t,n) instead of (x,y) respectively

so the first would be (1,30)

2. n=30/2

second would be (2,15)

3. n=30/3

third would be (3,10)

4.

n=30/4

fourth would be (4,7.5)

7 0
3 years ago
Graph the line that passes through the points (-1,-4) and (-2,-1) and
Oksanka [162]
Im dislexic im sorry
7 0
3 years ago
If necessary, combine like terms. (x-10)(x-10)
NeTakaya

Answer:

x^2 − 20x + 100

Step-by-step explanation:

7 0
3 years ago
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