Answer:
<h2>4</h2>
Step-by-step explanation:
A complex number in its rectangular form is expressed as x+iy where x is the real part of the complex number and y is the imaginary because it is attached to the imaginary number i.
Given the complex number 4-5i, comparing the complex number with x+iy
4 = x and iy = -5i
Hence x = 4 and y = -5.
Since x is the real part of the complex number x+iy,<em> hence 4 will be the real part of the complex number 4-5i based on comparison. </em>
Answer : 2880.68274 miles/hour
1 foot = 0.000189394 miles
4225 feet = 0.000189394* 4225 miles
distance traveled in 1 second = 0.000189394* 4225 miles
distance traveled in 1/3600 hours = 0.000189394* 4225 miles
distance traveled in 1 hour = 0.000189394* 4225 * 3600 miles
Speed is = 2880.68274 miles/hour
Since these are similar triangles you can use any two corresponding sides to figure out the scale factor.
Use the bottom side. Going from the first triangle to the second the scale factor is:
15/9 = 5/3
-10-a/-4-(-2) = 8
-10-a / -2 = 8
-10 - a = -16
-a = -6
a=6
Answer:
Correct option is
B
(1−3a−3b)(1+a+b)
1−2a−2b−3(a+b)
2
=−3(a+b)
2
−2(a+b)+1
=−3(a+b)
2
−3(a+b)+(a+b)+1
=−3(a+b)((a+b)+1)+((a+b)+1)
=((a+b)+1)(1−3(a+b))
=(a+b+1)(1−3a−3b)
