Answer:
Step-by-step explanation:
I'm not exatcly sure what is meant by magnitude but if it is the slope it is simply -7 if it is asking about the actual magnitude or length of the vector then we use pthagorean theorum which is:
when adjusted to solve for the answer is
which is c = sqrt (1^2) + (-7)^2 = 
would be the exact answer
Answer:
65%=$260
Step-by-step explanation:
40%+25%=65%
65% of 400
65/100*400
=$260
Answer: 11:17
Step-by-step explanation:
Number of fishes= 28
Goldfish= 11
Tetras= 28-11 = 17
Ratio of goldfish to tetras will be 11:17
Answer:
Step-by-step explanation:
Both numbers of the ratio units used to express the ratio in ten years are 2 higher than at present. Thus, each ratio unit must stand for 5 years. That would make their current ages ...
Sunitha: 7·5 = 35
Raseeda: 8·5 = 40
_____
If you can't figure the answer right away from the change in ratio units, then you may need to write a couple of equations:
- s/r = 7/8
- (s+10)/(r+10) = 9/10
These can be translated to standard form, which may make some methods of solution easier:
These have solution (r, s) = (40, 35).
