Try drawing a picture! To reflect something over the x-axis just change the sign of the y coordinates.
Answer:
13
Step-by-step explanation: divide
Answer: 5.4
Step-by-step explanation:
Use cosine to find the adjacent side.
cosine = adjacent/hypotenuse
Substitute these values in the cosine equation:
cos(39) = x/7
7*cos(39) = x
Use a calculator to find the value of x:
x = 5.4
Answer:
i dont reLLY KNOW BUT IM THE SMARTEST IN MATH IN MY GRADE AND I AM IN NINTH GRADE
Step-by-step explanation:
Answer:
width = 7, length = 11
Step-by-step explanation:
area = 77
length = 3w - 10
width = w
w(3w - 10) = 77
3w^2 - 10w - 77 = 0
(3w + 11)(w - 7) = 0
we rule out 3w + 11 = 0 because w would be negative
so we use w - 7 = 0
so the width = 7
length = 3w - 10
length = 21 - 10
length = 11
