Answer:
B. <2,-5>
Step-by-step explanation:
We are given the vectors,
u = <-2,0> and v = <4,-5>
It is required to find the sum of the vectors i.e. u + v.
So, we have,
u + v = <-2,0> + <4,-5>
i.e. u + v = < -2+4 , 0-5 >
i.e. u + v = <2,-5>
Thus, the sum of the vectors written as ordered pairs is <2,-5>.
Hence, option B is correct.
The answer is A because you are multiplying it by 2
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Answer:
C
Step-by-step explanation:
First we find the z-score.
z = (x - μ) / σ
z = (520 - 500) / 60
z = 0.33
Using a calculator or z-score table:
P(z < 0.33) = 0.6293
The probability is approximately 63%. Answer C
Ratio is written in x:y. therefore for this case, red:yellow
5 : 7
since the question states that there are 392 yellow poms, the 7 units represents 392 yellow poms. now you have to gind what is one unit and then multiply by 5 to find the number of red poms.
392 represents 7 units
1 unit: 392/7=56
5 units: 5×56=280 red poms
therefore the answer is 280 red poms which is C.
