5*6-2 represents a number that is 5 times the difference of 6 and 2.
Hope it will help you...
Answer:
A 1/3 * -2/5 = -2/15
Step-by-step explanation:
1/3 * 2/5 = 2/15
A positive times a negative is a negative
B negative times a positive is a negative
C negative times a negative is a positive
D 1/3 *2/3 = 2/9
Answer:
26x + 15y + 35*z = -25
Step-by-step explanation:
Given the planes:
5x + 3y -5z = 0
-5x + 4y + 2z = 9
First we have to find the cross product of the normal vectors of these planes:
<5, 3, -5> x <-5, 4, 2> = <3*2 - 4*(-5), -[5*2 - (-5)*(-5)], 5*4 - (-5)*3> =
<26, 15, 35>
Then substitute these and the point (0, -4, 1) into the standard plane equation:
ax + by + cz = d
26*0 + 15*(-4) + 35*1 = d
-25 = d
Step-by-step explanation:
=> x + 80 + 20 = 180
=> x + 100 = 180
=> x = 180 - 100
=> x = 80°
