13x-7y+4x(simply the expression by combining like terms) Please help!:) and if you can please show the steps!<3
Answers
Answer:
17−7
Step-by-step explanation:
Hope this helped good luck in your work!
What is B=T-Lc for T
Answers
Just add Lc to both sides
T = B + Lc
A kite is a quadrilateral with two pairs of adjacent, congruent sides. The vertex angles are those angles in between the pairs of congruent sides. Prove the diagonal connecting these vertex angles is perpendicular to the diagonal connecting the non-vertex angles. Be sure to create and name the appropriate geometric figures. This figure does not need to be submitted
Answers
from the figure we can express as Pythagoras theorem for rectangle triangles:
a^2 = r^2 + z^2
b^2 = r^2 + z^2
sen m = z/a cos m = r/a
hence by the law of sines and cosines:
sen^2 m + cos^2 m = 1 (z/a)^2 + (r/a)^2 = 1
z^2/a^2 + r^2/a^2 = 1
substitue first equation value for a^2 z^2/(r^2 + z^2) + r^2/(r^2 + z^2) = 1
which proves that in fact is a triangle rectangle due to Pythagoras and sine-cosine laws, the same procedure can be follow for the other rectangle triangule in teh figure.
The area of a rectangle is 28 square miles. The length is 7 miles.What is the width of the rectangle?