Recall that given vectors a and b, they are perpendicular if and only if $a\cdot b$ =0. If $a=(a_1,a_2),b=(b_1,b_2)$ . Then $a\cdot b = a_1b1_+a_2b_2$ .

IN our case a=(5,-1,2) and b) (1,-3,-4). So,

$a\cdot b = 5\cdot 1 + (-1)\cdot(-3) + 2\cdot(-4) = 5+3-8 =0$

So both gears are perpendicular.

3 0

4 years ago

Since y’all wanna give me the wrong fkn answers

madam [21]

Answer:

ggre

Step-by-step explanation:

erwg

rwg

gre

6 0

3 years ago

Which is greater a bottle containing 64 fluid ounces or bottle containing two liters of water

suter [353]

Answer:

2 liters, 64 fl. ounces would be converted to liter by 1.8927059 Liters

Step-by-step explanation:

7 0

3 years ago

Line A has a slope of 4. Line B has a slope of 1/4.

schepotkina [342]

The correct answer is actually (a) because rate of change is x/y (or that's how I learned it) then the more big the slope the bigger the rate of change

6 0

3 years ago

Read 2 more answers

Please Help: determine the slope of a line Connecting Point P and P' then find equation of line needed to P and p'.​

Please Help: determine the slope of a line Connecting Point P and P' then find equation of line needed to P and p'.