I’m not sure but 3 and 2/4
Two Million Four Hundred Thousand
Answer:
35i+13j
Step-by-step explanation:
Vector a = 9i+9j
Vector b = -4i+7j
We need to find the value of 3a-2b.
3a = 3(9i+9j) = 27i+27j
2b = 2(-4i+7j) = -8i+14j
3a-2b = 27i+27j-(-8i+14j)
= 27i+27j+8i-14j
= 35i+13j
Hence, the required vector is equal to 35i+13j.
Answer:
a) Between 74 and 90
b) 81.86% of the scores are between 78 and 90
Step-by-step explanation:
a) According to the Empirical Rule, in a normal distribution, 95% of the data are within 2 standard deviations of the mean. Therefore, the range that 95% of the scores fall in is between 82-4(2)=74 and 82+4(2)=90.
b) The percent of scores that are between 78 and 90 is: normalcdf(lower,upper,μ,σ) = normalcdf(78,90,82,4) = 0.8185946784 ≈ 0.8186, or about 81.86% of the scores.
Answer:
3445!
Step-by-step explanation:
hI swear i rember tis question!