Yes, in my opinion I think a bar model would be a good model for converting miles to feet. It is simple and easy to understand
Answer:
x = 5 or x = -5
Step-by-step explanation:
x^2−9=16
Add 9 to both sides
x^2 = 25
√x^2 = √25
x = 5 or x = -5
Answer:
14.7
Step-by-step explanation:
a^2+b^2=c^2
15^2+b^2=21^2
225+b^2=441
subtract 441-225=216
square root of 216 = 14.6969384567
= 14.7
The answer would be -40 c:
Answer:
y=2x+1
Step-by-step explanation:
A(1;3) and m=2
y-yA=m(x-xA)
y-3=2(x-1)
y-3=2x-2
y=2x+1; or 2x-y+1=0