Answer:
Step-by-step explanation:Perhaps somebody's asked this already, but I can't see it. Suppose I have a square that is 7 feet by 7 feet. I want to calculate the area. I multiply 7 feet by 7 feet and get 49 square feet, but since the lowest number of sig figs in one of my operands is one, my answer can only have one sig fig. This forces my answer to be 50 square feet, and I have now lost precision. Can somebody explain this?
Y=1/2x-2
To find the point where the two lines intersect they are set equal to each other so that x can be found:
2x-5=-x+1
2x+x=1+5
3x=6
x=2
If x is known, x can be plugged into one of the two equations to find y.
y=-x+1=-2+1=-1
This means the point where they intersect is (2,-1).
We also know that the slope has to be 1/2 because the slope has to match the slope of the line it is parallel to.
Putting this into point slope form, we get:
(y-(-1))=1/2(x-2)
Which can be simplified into slope intercept form:
y+1=1/2x-1
y=1/2x-1-1
y=1/2x-2
The speed 217 miles per hour using dimensional analysis to convert to feet per minute is; 19096 ft/min
<h3>How to use Dimensional Analysis?</h3>
From dimensional analysis, we know that;
1 mile = 5280 feet
1 hour = 60 minutes
Thus;
1 mile/hr = 88 feet/min
Since conversion from mph to ft/min is, 1 mile/hr = 88 feet/min
Then, 217 mile/hr = (217 mile/hr/1 mile/hr) * 88 feet/min
⇒ 19096 ft/min
Read more about Dimensional Analysis at; brainly.com/question/20712353
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Answer:
x= 3
Step-by-step explanation:
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