Answer:
Simplified: 10x-55
Step-by-step explanation:
Distribute the five into the parenthesis..
(5)2x- (5)11
Then, multiply.
10x-55
10x-55 is the simplified version by the distributive property.
Answer:
10x - 55
Step-by-step explanation:
5(2x-11)
5*2x=10x
5*11
10x-55
Answer:
Step-by-step explanation:
6000-1800 = 4200 divided by 1/4 = 1050
6,000 - 1,800 = 4,200
4,200 / 1/4 (or 25)
she donated 168.0% of her money.
F(x)=2x^4 +5x^3 - x^2 +6x-1
Answer:
Two complex roots.
Step-by-step explanation:
F(x)=2x^4 +5x^3 - x^2 +6x-1
is a polynomial in x of degree 4.
Hence F(x) has 4 roots. There can be 0 or 2 or 4 complex roots to this polynomial since complex roots occur in conjugate pairs.
Use remainder theorem to find the roots of the polynomial.
F(0) = -1 and F(1) = 2+5-1+6-1 = 11>0
There is a change of sign in F from 0 to 1
Thus there is a real root between 0 and 1.
Similarly by trial and error let us find other real root.
F(-3) = -1 and F(-4) = 94
SInce there is a change of sign, from -4 to -3 there exists a real root between -3 and -4.
Other two roots are complex roots since no other place F changes its sign
Answer: 1
Step-by-step explanation:
The formula for calculating the sum of a Geometric series if the common ratio is greater than 1 is given as :
=
Where is the sum of terms , a is the first term , r is the common ratio and n is the number of terms.
From the question:
= 3280
a = ?
r = 3
n = 8
Substituting this into the formula , we have
3280 =
3280 =
Multiply through by 2 , we have
6560 = a ( 6560)
divide through by 6560, we have
6560/6560 = a(6560)/6560
Therefore : a = 1
The first term of the series is thus 1
Answer:
1
Step-by-step explanation: