Answer:
Step-by-step explanation:
The reasons why the area of parallelogram and rectangle are the is that the two opposite sides are equal, they have the lines of symmetry, the sum of their angles is equal to 360°
= 6y^2√10 + 12√5y
answer is A. first one
hope it helps
Answer:
10x-14=26
Step-by-step explanation:
x = 4
10 x 4 = 40
40 - 14 = 26
Since it is an equilateral triangle, all sides are the same, so all amplitudes are the same.
You should use the pythagorean theorem to find the altitude.
How?:
1) Split the triangle in half. You will now have a right triangle with side C=46 and either A or B= 23.
2)Now plug these values into the equation(I chose to plug 23 in as A)
a^2 +b^2=c^2.
3) This gives you:
23^2+b^2=46^2
4) Isolate the variable and solve:
23^2+b^2=46^2
b^2=46^2-23^2
b^2=1587
5) The square root of 1587 is 39.8
The answer is 39.8 cm:)
I hope you learned something!
(^2 means squared, the ^ means the following number is the exponent, just in case ya didn't know)
