MATHEMATICS HIGH SCHOOL

Which polynomial does the model represent? A: -x^3 + 2x^2 - 3x + 4
B: x^2 + x -2
C: -x^2 - x + 2
D: -x^2 + x - 2
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Answers

Answer 1
Answer: The model is an algebra tile model.

1st big tile is x², however, it is in black thus it's a negative sign. -x²
2 white tiles represent 2x
3 black tiles represent -3x
3 white small tiles represent + 3
1 black small tile represent -1

-x² + 2x - 3x + 3 - 1 ⇒ -x² - x + 2  Choice C.

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If $396 is invested at an interest rate of 13% per year and is compounded continuously, how much will the investment be worth in 3 years?

Answers

Answer:

\$584.88  

Step-by-step explanation:

we know that

The formula to calculate continuously compounded interest  is equal to

A=P(e)^(rt)  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal


t is Number of Time Periods  

e is the mathematical constant number

we have  

t=3\ years\n P=\$396\n r=0.13  

substitute in the formula above  

A=\$396(e)^(0.13*3)=\$584.88  
so
396*0.13=51.48
51.48*3=154.44x100
154.44 divided by 100 100% because % so u need to put100%
154.44/100=1.5444
so the answer is 1.5444


                     hope it's the best answer

P(x) x^3+x^2-x-1

Find all zeros of p (x)

Answers

x^3+x^2-x-1=0\nx^2(x+1)-1(x+1)=0\n(x^2-1)(x+1)=0\n(x-1)(x+1)(x+1)=0\n(x-1)(x+1)=0\nx=1 \vee x=-1

Question 12 of 22What is sin 60°?
O A.
OB.
O C. 1
O D.
2
1
-
√2
OE 1/1/20
OF. √3

Answers