Answer: -7
Step-by-step explanation:
−7
=−7
Step-by-step explanation:
A straight line adds up to 180°
m+3m=180°
4m=180°
m=45°
3m=45°
angle CBD=3(45)
=135°
Answer:
No they don't show direct variation because if you get y alone, the equation you get is in slope intercept form instead of direct variation.
Step-by-step explanation
direct variation: y=kx
y-x=4
+x +x
y= 4+x
Not Direct Variation
Answer:
5050
Step-by-step explanation:
∑_{n=1 to 50} (4n-1)
a1=4×1-1=3
a2=4×2-1=7
a3=4×3-1=11
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a50=4×50-1=199
n=50
Sn=n/2(a1+an)
S50=50/2(3+199)=50/2×202=50×101=5050
