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creativ13 [48]
2 years ago
14

Y is inversibly prportional to x when y=7 x=9 work out the value when x=21​

Mathematics
1 answer:
Natasha2012 [34]2 years ago
3 0

Answer: a) Equation become xy=1 and the second part answer is b) y=1/21

Step-by-step explanation:

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Two times a number, x, plus 3 times a number, y, equals 50. Four times x minus 2 times y equals 4. What are the numbers?
Marysya12 [62]
The answer should be D. If you plug it in,

-11 x 2 = -22 24 x 3 = 72

72 -22 = 50


4 x -11 = -44 2 x 24 = 48

48 -44 = 4
6 0
3 years ago
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Viefleur [7K]

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3 0
3 years ago
Kevin cycles 18 miles every morning as part of his exercise. The time it takes him to complete the distance varies inversely as
Lelechka [254]

Answer:

The T = \frac{18}{m} best models the amount of time it takes him to finish with kelvin cycling .

Option (A) is correct.

Step-by-step explanation:

As given

Kevin cycles 18 miles every morning as part of his exercise.

The time it takes him to complete the distance varies inversely as the speed at which he rides.

Time \propto \frac{1}{Speed}

Time = \frac{Distance}{Speed}

As m miles per hour is represented the speed.

T is the time taken by Kevin cycle for morning exercise .

Distance = 18

Putting the values in the above

T = \frac{18}{m}

Therefore the T = \frac{18}{m} best models the amount of time it takes him to finish with kelvin cycling .

Option (A) is correct.




6 0
3 years ago
Read 2 more answers
Johnathan is making his famius pasta dish his mom ate 2/7 of pasta and his
aniked [119]
\dfrac{2}{7} +  \dfrac{1}{6}  =  \dfrac{2 \times 6}{7 \times 6} +  \dfrac{1 \times 7}{6 \times 7} =  \dfrac{12}{42} +  \dfrac{7}{42} = \dfrac{19}{42}

\boxed {\boxed {\text {Answer: They ate }\dfrac{19}{42} \text { of the pasta.}}}
4 0
3 years ago
Read 2 more answers
What is the lcd of: 8/9x 2/3x=1/9x 45?
spayn [35]
LCD would be 18

8/9 = 16/18
2/3 = 12/18
1/9 = 2/18
5 0
3 years ago
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