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Vinil7 [7]
3 years ago
5

The value of y varies directly with x. If x = 3, then y = 21. What is the value of x when y = 105?

Mathematics
1 answer:
Bumek [7]3 years ago
3 0

Answer:

J

Step-by-step explanation:

y \alpha x \\  \frac{y}{x}  = k \\  \frac{21}{3}  =  \frac{105}{x}  \\ x = 15

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there are 2.54 centimeters in 1 inch. there are 100 centimeters in 1 meter.questionto the nearest meter, how many meters are in
Gre4nikov [31]

There are 7 meters in 279 inches.

  • There are 2.54 centimeters in 1 inch.
  • There are 100 centimeters in 1 meter.
  • The number of inches is given to be 279.
  • Unit conversion is a multi-step procedure that includes multiplying or dividing by a numerical factor, determining the appropriate number of significant digits, and rounding.
  • First of all, we need to convert inches to centimeters.
  • 1 inch equals 2.54 centimeters.
  • 279 inches equals 2.54*279 centimeters.
  • 279 inches equals 708.66 centimeters.
  • Now, we need to convert these centimeters into meters.
  • Meters in 100 centimeters = 1
  • Meters in 1 centimeters = 1/100
  • Meters in 708.66 centimeters = (1/100)*708.66
  • Meters in 708.66 centimeters = 7.0866
  • Thus, there are approximately 7 meters in 279 inches.

To learn more about unit conversion, visit :

brainly.com/question/11543684

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8 0
2 years ago
A car starts from an initial velocity of 10m/s and accelerates at 2.5m/s².how long will it take the car to reach a speed of 40m/
PIT_PIT [208]
A=(v-u)/t
We know a=2.5, v=40, u=10, so:
2.5=(40-10)/t
2.5t=40-10
2.5t=30
Divide both sides by 2.5
t=12 It takes 12 seconds for the car to reach 40m/s

To find out how far it went, you do:
d=v+1/2 at^2
d=10+1/2(2.5)(12)^2
d=10+1/2(2.5)(144)
d=10+(1.25)(72)
d=10+90
d=100m

Hope this helps :)
7 0
3 years ago
Who try to play quizizz with me
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Answer: no thanks im good

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3 years ago
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Lexi needs four medium boxes
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3 years ago
What separates the portion of a number that is greater than 1 from the portion of the number that less than 1
konstantin123 [22]

Answer:

1/2 -2/1

Step-by-step explanation:

122

8mar12

212323

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7 0
3 years ago
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