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N76 [4]
3 years ago
11

3k-4m - 1 2k+3m12 Solve the following equation using elimination method

Mathematics
1 answer:
allsm [11]3 years ago
7 0

Step-by-step explanation:

Let's solve your system by elimination.

3k−4m=−1;2k+3m=12

Multiply the first equation by 3,and multiply the second equation by 4.

3(3k−4m=−1)

4(2k+3m=12)

Becomes:

9k−12m=−3

8k+12m=48

Add these equations to eliminate m:

17k=45

Then solve17k=45for k:

17k=45

----

17k

=17

45

17

(Divide both sides by 17)

k=

45

17

Now that we've found k let's plug it back in to solve for m.

Write down an original equation:

3k−4m=−1

Substitute

45

17

forkin3k−4m=−1:

3(

45

17

)−4m=−1

−4m+

135

17

=−1(Simplify both sides of the equation)

−4m+

135

17

+

−135

17

=−1+

−135

17

(Add (-135)/17 to both sides)

−4m=

−152

17

−4m

−4

=

−152

17

−4

(Divide both sides by -4)

m=

38

17

Answer:

k=

45

17 and m=

38

17

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6 0
3 years ago
A security fence encloses a rectangular area on one side of a park in a city. three sides of fencing are? used, since the fourth
alexandr1967 [171]
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Let y = width of the park

Because the area is 392392 ft², therefore
xy = 392392          (1)
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y = 5656 - 2x          (3)
Substitute (3) into (1).
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Answer:
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3 0
3 years ago
Three airlines serve a small town in Ohio. Airline A has 52% of all scheduled flights, airline B has 27% and airline C has the r
julia-pushkina [17]

Answer:

Step-by-step explanation:

Given that three airlines serve a small town in Ohio. Airline A has 52% of all scheduled flights, airline B has 27% and airline C has the remaining 21%.

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Flights                52%                  27%             21%   100%

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Prob it was airline A given it left on time

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3 years ago
Write the coordinate of A’ after A (5,3) got reflected over the x-axis.
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Answer:

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Step-by-step explanation:

Reflection over the x-axis changes the sign of the y-coordinate:

  (x, y) ⇒ (x, -y)

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