I just worked this question. None of those are the answers
First we remove the brackets:
4x + 16 = 2x + 4
Group like terms:
4x - 2x = 4 - 16
Evaluate:
2x = -12
x = -12/2 = -6
92, 93, 94, 95, 96
have a nice day hope this answer helps
Answer:
Step-by-step explanation:
35% means 35 per hundred. 35/100. simplify and write as 7/20.
0.64 means its 2 zeros left of regular number. 64/100.
82% means 82 per hundred. 82/100. move decimal 2 spaces to left (division is left, multiplication is right). 0.82.
4/5. try to make denominator 100. multiply both numerator and denominator by 20. 80/100. move decimal 2 spaces to the left. 0.8.
14/50. try to make denominator 100. multiply both numerator and denominator by 2. 28/100. 28%
0.19 can be written as 19/100. 19%
Answer: very small standard deviation that much less than one
Step-by-step explanation: standard deviation is the measure of how the scores are spread around the mean. Since most of the students score the same mark (which is the mean score), the few others who scored below the mean score will account for a small deviation from the mean score
We need to find dot products of 2 vectors:
u·v = x1*x2 + y1*y2
u·v = 2*(-6) + 3*4 = -12 + 12 = 0
Another way to write dot product u·v = |u|*|v|*cos α.
Because the do product = 0, we can write
|u|*|v|*cos α = 0.
That means cos α = 0, and thus α=90⁰, so vectors v and u are orthogonal.