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bogdanovich [222]

2 years ago

6

Is y=x^2 a proportional relationship?

1 answer:

TiliK225 [7]2 years ago

6 0

Answer:

is y=x^2 a proportional relationship?

${ \sf{yes. \: constant \: of \: proportionality = 1}}$

is y=2+x a proportional relationship?

${ \sf{no. \: unless \: y \: is \: proportinal \: to \: (2 + x)}}$

is y=2/x a proportional relationship?

${ \sf{yes. \: where \: proportianality \: constant \: is \: 2}}$

is y=2x a proportional relationship?

${ \sf{yeah. \: constant \: is \: 2}}$

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Talja [164]

2:1 is the perimeter

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2 years ago

Match the areas of the following squares with their correct side lengths.

9966 [12]

x=2

z=45

d=6

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2 years ago

A long distance runner does a first lap around a track in exactly 50 seconds.As she tires.Each subsequent lap takes 20% longer t

madreJ [45]

Answer:

182 seconds

Step-by-step explanation:

Given:

Time taken for first lap is 50 seconds and each subsequent lap takes 20% longer than previous

Solution:

Time taken for first lap = 50 sec

For second lap

Each subsequent lap takes 20% longer than previous

Previous lap time = 50 sec

second lap = 50 + 20% of 50

second lap $=50+(\frac{20}{100}\times 50)$

second lap $= 50 + 10$

second lap $= 60\ sec$

For third lap

Each subsequent lap takes 20% longer than previous

Previous lap time = 60 sec

Third lap = 60 + 20% of 60

$Third\ lap = 60 + (\frac{20}{100}\times 60)$

$Third\ lap = 60+2\times 6$

$Third\ lap = 60+12$

$Third\ lap = 72\ sec$

Time taken for 3 laps is equal to sum of all three laps time.

$Tiem\ taken\ for\ 3\ lap = 50+60+72$

$Tiem\ taken\ for\ 3\ lap = 182\ sec$

Therefore, it takes 182 seconds (3 min, 2 seconds) to run three laps

6 0

3 years ago

A recipe requires ¼ cup of oil for every ⅔ cup of water. How much oil (in cups) is needed per cup of water?

Ulleksa [173]

Answer:

3/8 cups

Step-by-step explanation:

Divide both sides by 2 to get the value for 1/3 cup of water:

1/3 cup water = 1/8 cup of oil

Now, multiply each side of the equation by 3 to get 1 cup of water:

1 cup water = 3/8 cup of oil

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8 0

2 years ago

Can you also explain how you got the answer

Alja [10]

Answer:

I recoment using the formula because its different ways its taught

Step-by-step explanation:

maybe look up different formula's

5 0

2 years ago

Read 2 more answers