You need to draw the triangle DEF with a right angle at E. Angle D = 40 and DE = 100 m. Once you have marked up your triangle, you can use cosine to find DF.
<span>2x+y=8
2x+x-7=8
3x=15
x=5
y=5-7
y=-2</span>
Answer:
umm i think it is 5 cm but im not sure
4 x N + 2
8 x N -20
n= number hope this helps
Answer: The number you reach would be -4
Step-by-step explanation:
