Answer:
84mm2
Step-by-step explanation:
A=1/2×base×height
A=1/2×14×12
=84
Answer:
Step-by-step explanation:
Circumference of circle H:
2πr = 2 × π × radius = 2 × π × 9m = 18π m ~ 56.52 m
ZX = 9m
I don't know any of the other answers.
The equation is F=ma. what you would do is (divide) 7.92 N/ 3.6kg. so then your answer is 2.2 m/s
Answer:
- Trapezoid with the area 16.5 unit²
Step-by-step explanation:
Plotted the given points to find out the figure is trapezoid.
<u>Area formula for trapezoid:</u>
<u>The length of the bases:</u>
- b₁ = DE = 3 - (-1) = 4
- b₂ = FG = 4 - (-3) = 7
<u>h is the horizontal distance between the bases:</u>
<u>The area is:</u>
- A = 1/2(4 + 7)(3) = 16.5 unit²
Answer:
Step-by-step explanation:
If we had 2 independent samples with population variances unknown and equal and we want to compare the population mean between the both groups, the test statistic will be:
Where
So, the t-student has degrees of freedom
Where and are the means of the groups, and are the size of the samples and and are the sample variances.