Answer:
draw an arrow from the four
Step-by-step explanation:
make an open circle
then draw to the right like this
<------0
For the first question the answer is B
Infinite solutions for this
Answer:
B
Step-by-step explanation:
You can see from the sequence 26, 44, 62, 80,.... that each term after the first is 18 larger than the previous term.
<u>The first 4 seconds' distance is given</u>, so
- 5th second distance is 80+18=98
- 6th second distance is 98+18=116
- 7th second distance is 116+18=134
To find total distance for 7 seconds, we add up all the individual distances:
26+44+62+80+98+116+134=560
Answer choice B is right.
Answer:
the modulus of a complex number z = a + bi is:
Izl= √(a²+b²)
The fact that n is complex does not mean that n doesn't has a real part, so we must write our numbers as:
m = 2 + 6i
n = a + bi
Im + nl = 3√10
√(a² + b²+ 2²+ 6²)= 3√10
√(a^2 + b^2 + 40) = 3√10
squaring both side
a²+b²+40 = 3^2*10 = 9*10 =90
a²+b²= 90 - 40
a²+b²=50
So,
|n|=√(a^2 + b^2) = √50
The modulus of n must be equal to the square root of 50.
now
values a and b such
a^2 + b^2 = 50.
for example, a = 5 and b = 5
5²+5²=25+25= 50
Then a possible value for n is:
n = 5+5i
