C and D tell me if those are wrong because i'm only a beginner and i would like to learn from my mistakes
Answer:
No, it is not possible to obtain zero by adding two vectors of unequal magnitudes.
Explanation:
The Sum of two vectors can only be zero if they are equal in magnitude and opposite in direction. So no two vectors of unequal magnitude cannot be added to give a null vector. Three vectors of equal magnitude and making an angle 120 degrees with each other gives a zero resultant.
Answer:
x=5, -1
Step-by-step explanation:
set the equation equal to 0: 2x^2-8x-10=0
divide both sides by 2 to get x^2-4x-5=0
next factor your new equation to get (x+1)(x-5)
set those equal to zero
now you have x+1=0 and x-5=0
finally, solve for x by subtracting 1 and adding 5
now you have your answer x= 5 and -1
Answer:
I am pretty sure the answer is C.
Step-by-step explanation:
Since the total amount of quarters and dimes Javier has is 24, we can use the variables d (representing the dimes) and q (representing the quarters) and come up with <u><em>d + q = 24 </em></u>for the first part.
for the second part, we know that every dime is worth 10 cents, or, .10 and every quarter is worth 25 cents , or .25 so for the second part, we can come up with the equation<u><em> .10d + .25q = $3.75 .</em></u>
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i hope this helps (:
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