8-(5.5) please help I need it ASAP
1 answer:
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Answer:
1 : 400,000
Step-by-step explanation:
A map scale is usually represented as a unit fraction, one with 1 in the numerator. It has no units, which is to say that it is the ratio of same units.
It can be found by dividing the map dimension by the ground dimension when both are expressed in the same units.
(8.4 cm) / (33.6 km) = (8.4×10^-2 m) / (33.6×10^3 m) = (8.4/33.6)×10^-5
= 0.25×10^-5 = 1/400,000
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<em>Additional comment</em>
Map scales are often expressed using the colon for the ratio unit separator:
1 : 400,000
Answer:
16)
17) y = -x - 4
18) y = -2x - 1
19) y = -2x
20)
Step-by-step explanation:
With the two points you find the slope using
Then using that slope, plug the slope in with one of the points values of x and y into the point slope formula, and smiplify that into the y-intercept formula.
Answer:
The solution to the system of equations will be:
Step-by-step explanation:
Given the system of equations
Multiply 2x-9y=-36 by 7
so the system of equations becomes
Adding both equations
solve -45y = -270 for y
divide both sides by -45
Simplify
For 14x-63y = -270 plug in y = 6
Add 378 to both sides
Simplify
Divide both sides by 14
Simplify
Therefore, the solution to the system of equations will be: