Answer:
Option 3 (7,2) is right answer.
Step-by-step explanation:
Given two equations
3x-2y=17 ... i
x-3y=1 ... ii
We can solve this by elimination.
coefficients of x are 3 and 1 with LCD = 3
Hence multiply ii equation by 3
3x-9y = 3 ... iv
3x-2y = 17 ... i
Subtract i from iv
-7y = -14
Divide by -7
y =2
Substitute in ii
x-3(2) = 1
x=7
Hence solution is (7,2)
Verify:
We can verify our solution by substituting in i and ii.
3(7)-2(2) = 17 and 7-6 =1
Verified
Yes because 484 + 484 equals 964
And equation you should always do the opposite of the sign you get to find your answer so he got minus he should use Addition
Answer:
15
Step-by-step explanation:
Answer:
2 2/5 hour
Step-by-step explanation:
Complete Question
A turtle can walk 1/12 of a kilometer in an hour. The turtle is 1/5 of a kilometer away from a pond.At this speed how long will it take the turtle to reach the pond?
From the above question:
1/12 km = 1 hour
1/5 km = x hour
Cross Multiply
1/12 km × x hour = 1/5 km × 1 hour
x hour = 1/5 km × 1 hour/1/12 km
x hour = 1/5 km ÷ 1/12 km
x hour = 1/5 × 12 hour
x hour = 12/5 hour
x hour = 2 2/5 hour
Answer:
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Step-by-step explanation: