Yes because 484 + 484 equals 964
And equation you should always do the opposite of the sign you get to find your answer so he got minus he should use Addition
Basically, you know a parallelogram has 4 angles which all add up to 360 degrees. (3x+5)+(x+3y)+2x+70=360 degrees. Just solve for x and y
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➷ Subtract the two values:
16 - 7 = 9
Sean is 9 years older than Sally.
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Answer:
A.
Step-by-step explanation:
i pretty sure
Answer:
The mean run time is 300 minutes
Step-by-step explanation:
Null hypothesis: The mean run time is 300 minutes
Alternate hypothesis: The mean run time is not 300 minutes
Test statistic (z) = (sample mean - population mean) ÷ sd/√n
sample mean = 295 minutes, population mean = 300 minutes, sd = 20 minutes, n = 50
z = (295 - 300) ÷ 20/√50 = -5 ÷ 2.83 = -1.77
The test is a two tailed test. The critical value using a significance level of 0.05 is 1.96
Since the test is two tailed, the region of no rejection of the null hypothesis lies between -1.96 and 1.96
The test statistic (-1.77) falls within the region bounded by -1.96 and 1.96, fail to reject the null hypothesis
Conclusion: The mean run time is 300 minutes