Answer:
306.36
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
3. ∠1+∠2=180° and ∠2+∠3=180°
4. they are supplementary
5. ∠1+∠2=180°=∠2+∠3
6. ∠1+∠2=180°=∠2+∠3
∠2 are same in both side so ∠1=180°-∠2 =∠3=180°-∠2
7.
Answer:
80cm^3
Step-by-step explanation:
To find the volume of the figure, we can see the shape comprises of both cube and cuboid
Volume of cuboid = length x breadth x height = 6x4x3= 72cm^3
Volume of cube = length xlength x length = 2×2×2 = 8cm^3
The volume of the figure = volume if cuboid and cube = 72+8 = 80cm^3
<h2>
Answer with explanation:</h2>
Given : Sample size 
Sample mean : 
Sample standard deviation : 
Let 
be the population mean of "like" ratings of male dates made by the female dates.
As per question ,
Null hypothesis : 
Alternative hypothesis : 
, It means the test is a one-tailed t-test. ( we use t-test when population standard deviation is unknown.)
Test statistic:
For 0.05 significance and df =188 (df=n-1) p-value = .001582. [By t-table]
Since .001582< 0.05
Decision: p-value < significance level , that means there is statistical significance, so we reject the null hypothesis.
Conclusion : We support the claim at 5% significance that t the population mean of such ratings is less than 8.00.
