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3 years ago

Proportional Relationship:

Mathematics

1 answer:

OLEGan [10]3 years ago

8 0

non proportional if 25 then 10 for the same duration of time.

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8th grade khan academy

satela [25.4K]

Answer:

d = 11t - 20

Step-by-step explanation:

Hope it helps and have a great day! =D

~sunshine~

4 0

3 years ago

Which unit rates would be appropriate for describing the speed of cars in a race?

vodomira [7]

I would think miles per hour would be the best units to use because that is what the speedometer of a car is read in. Hope this helped! comment back with any questions you still have!

7 0

3 years ago

How to find the measure of a arc in a circle

Karo-lina-s [1.5K]

Answer:

using the (pi) which is the formula

8 0

2 years ago

Read 2 more answers

Greg swam 4 kilometers against the current in the same amount of time it took him to swim 16 kilometers with the current. The ra

ad-work [718]

Answer:

5 kmph

Step-by-step explanation:

Given: Greg swam 4 kilometers against the current.

Greg swam 16 kilometers with the current.

Rate of the current was 3kmph.

Lets assume the speed of greg swimming with no current be "x".

∴ Speed of swimming against current= $(x-3)\ kmph$

Speed of swimming with current= $(x+3)\ kmph$

As given, it took same amount of time to swim both with current and against current.

∴ Forming an equation to find the value of x, which is speed of greg swimming with no current.

We know, $Time= \frac{Distance}{Speed}$

⇒ $\frac{4}{(x-3)} = \frac{16}{(x+3)}$

Multiplying both side by (x+3) and (x-3)

⇒ $4\times (x+3)= 16\times (x-3)$

Using distributive property of multiplication.

⇒ $4x+12= 16x-48$

Subtracting both side by 4x and adding by 48.

⇒ $60= 12x$

Dividing both side by 12

⇒ $x= \frac{60}{12} = 5\ kmph$

Hence, Greg can swim at the rate of 5kmph with no current.

7 0

3 years ago

The boxplot below displays the average number of apple pies consumed in eating contests across a particular state. The higher ou

Nat2105 [25]

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6 0

3 years ago