Step-by-step explanation:
sum of all angles in a triangle is 180 degrees
x + 3x + 13 + x - 8 = 180
5x + 5 = 180
5x = 175
x = 37°
A = 3x + 13
3(37) + 13
A = 124°
Answer:
4/10, 6/15, 8/20, 10/25
Step-by-step explanation:
Answer:
x ≈ -7.73 , - 4.27
Step-by-step explanation:
x² + 12x + 33 = 0 ( subtract 33 from both sides )
x² + 12x = - 33
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(6)x + 36 = - 33 + 36
(x + 6)² = 3 ← take square root of both sides )
x + 6 = ±
( subtract 6 from both sides )
x = - 6 ± ![\sqrt{3}](https://tex.z-dn.net/?f=%5Csqrt%7B3%7D)
Then
x = - 6 -
≈ - 7.73 ( to the nearest hundredth )
x = - 6 +
≈ - 4.27 ( to the nearest hundredth )
Answer:
![\huge\bold\red{Perimeter}](https://tex.z-dn.net/?f=%5Chuge%5Cbold%5Cred%7BPerimeter%7D)
Perimeter is the distance around the outside of a shape. Perimeter is found by adding together the length of all a shape's sides.
![\huge \dag \sf{Formula \: of}](https://tex.z-dn.net/?f=%5Chuge%20%5Cdag%20%5Csf%7BFormula%20%5C%3A%20of%7D)
![\Large\bold\red{Trapezoid}](https://tex.z-dn.net/?f=%5CLarge%5Cbold%5Cred%7BTrapezoid%7D)
P = a + b + c + d
![\Large\bold\red{Rhombus}](https://tex.z-dn.net/?f=%5CLarge%5Cbold%5Cred%7BRhombus%7D)
p = 4 × a
![\Large\bold\red{Kite}](https://tex.z-dn.net/?f=%5CLarge%5Cbold%5Cred%7BKite%7D)
p=2a+2b
![\Large\textsf{Hope \: It \: Helped}](https://tex.z-dn.net/?f=%5CLarge%5Ctextsf%7BHope%20%5C%3A%20It%20%5C%3A%20Helped%7D)
Answer:
Myra swims for 3 miles.
Step-by-step explanation:
3/5 = 6/10
2 4/10 + 6/10 = 3