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nordsb [41]
3 years ago
13

What is the value for k? 1/2k + 6 = 4k - 8 a.) -4 b.) -3 c.) 3 d.) 4

Mathematics
2 answers:
inessss [21]3 years ago
5 0
I hope this helps you

Verizon [17]3 years ago
5 0
The value know was 4. The answer was 4
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Malcolm and Ravi raced each other. The average of their maximum speeds was 260\text{ km/h}260 km/h260, space, k, m, slash, h. If
nikdorinn [45]

Let m and r represent the maximum speeds of Malcolm and Ravi in km/h, respectively.

... (m + r)/2 = 260 . . . . . the average of their speeds was 260 kph

... 2m = r + 80 . . . . . . . . double Malcolm's speed is 80 kph more than Ravi's

The second equation can be solved for r and that expression substituted into the first equation.

... 2m - 80 = r . . . . . . . . . . . an expression for r from the second equation

... (m + 2m - 80)/2 = 260 . . . the result of substituting that into the first

... 3m - 80 = 520 . . . . . . . . multiply by 2

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Malcolm's maximum speed was 200 km/h.

Ravi's maximum speed was 320 km/h.

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3 years ago
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