Two cars leave town at the same time and travel in opposite directions. Speed of car A is 12 km/h more than car B. They are 312k
1 answer:
Answer:
Speed of car B is 33 km/h and speed of car A is
Step-by-step explanation:
Let speed of car B be km/h
Speed of car A is 12 km/h more than car B.
Therefore,
Speed of car A = km/h
Distance = Speed × Time
Distance travelled by car A in 4 hours = km =
km
Distance travelled by car B in 4 hours = km
Also, cars A and B are 312km apart after 4 hours.
Speed of car B is 33 km/h and speed of car A is
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The value of the expression f(x,y)=139- at (3,-9) is 49.
Given that the expression is f(x,y)=139- and point (3,-9).
We are required to find the value of the expression f(x,y)=139- at (3,-9).
Expression is basically a combination of numbers, fractions, symbols, coefficients,determinants,indeterminants. They are mostly not found in equal to form.
Expression is f(x,y)=139-.
To find the value of expression f(x,y) at (3,-9).
f(3,-9)=139- (Squaring 3 and -9)
f(3,-9)=139-9-81 (Now add 9 and 81 and put minus sign before the result)
f(3,-9)=139-90
f(3,-9)=49 (Now subtract 90 from 139)
Hence the value of the expression f(x,y)=139- at (3,-9) is 49.
Learn more about expressions at brainly.com/question/723406
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