F(x) = -2 * x + 8
f(-1.8) = -2 * (-1.8) + 8 = 3.6 + 8 = 11.6
Answer:
Height: 6.7 Length: 22
Step-by-step explanation:
Use Soh (sin(angle)=) Cah (cos(angle)=) Toa (tan(angle)=)
Height:
You'd use sin so the equation is sin17=x/23 which is equal to (rounded) 6.7
Length:
You'd use cos so the equation is cos17=y/23 which is equal to (rounded) 22
*You always need to use a calculator when using sin, cos, and tan*
*SohCahToa is an easy way to remember the equations!*
Hope this helped!
Answer:
the 3rd one
Step-by-step explanation:
an open circle means equal to and x is equal to or greater than and the line is going past 9
Answer:
A true
Step-by-step explanation:
Rectangles have parallel sides and 90 degree angles.
Squares have parallel sides and 90 degree angles and equal length sides
Square are a subset of rectangles
All squares are rectangles