Answer:
k=30
Step-by-step explanation:
The formula for calculating the mean from a frequency table is:
we have
So our equation is
Solving the equation yields:
The answer is D. 62.5%
Hope this helped. Good luck!
Answer:
500 square units.
Step-by-step explanation:
The hexagon is composed of two trapezoids (both of which are congruent). Let's find the area of the top trapezoid
A = h*(b1+b2)/2
A = 10*(40+10)/2
A = 10*(50)/2
A = 500/2
A = 250
Each trapezoid has area of 250 square units. So the combined area is 2*250 = 500 square units.
Answer: 10
Step-by-step explanation:
100/10=10
4030/10=403
Ans: Four shortcuts allow students to know two triangles must be congruent: SSS, SAS, ASA, and AAS. Knowing only side-side-angle (SSA) does not work because the unknown side could be located in two different places. The same is true for side angle side, angle side angle and angle angle side.
