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hichkok12 [17]
1 year ago
6

If y varies directly as x, and y is 20 when x is 4, what is the constant of variation for this relation?

Mathematics
2 answers:
Nuetrik [128]1 year ago
6 0
The variation would be x5. 4*5=20
Levart [38]1 year ago
6 0

Answer: 5

Step-by-step explanation:

Let k be the constant of variation for this relation.

If y varies directly as x, then the equation of direct variation is given by ;-

y=kx, where k is the constant of variation for the relation.

\Rightarrow\ k=\dfrac{y}{x}

Now, for the given value of y = 20 and x=4, the value of  constant of variation is given by :-

\Rightarrow\ k=\dfrac{20}{4}=5

Hence, the value of constant of variation for this relation k = 5.

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You are buying boxes of cookies at a bakery. Each box of cookies costs \$4$4dollar sign, 4. In the equation below, ccc represent
Basile [38]

Answer:

The required equation is

d = 4c

where d represents the cost of cookies in dollar and c represents the number of boxes of cookies.

Step-by-step explanation:

Given that, the cost of each box of cookies is $4.

It means,

The cost of 1 box of cookies is $4.

The cost of 2 boxes of cookies is $(4+4)  =$(2×4)

The cost of 3 boxes of cookies is $(4+4+4)  =$(3×4)

The cost of cookies

=(Number of boxes × 4)

The required equation is

d = 4c

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8 0
1 year ago
You want to find out how sleep deprivation affects motor performance. To study this, you have sleep-deprived subjects (such as p
marysya [2.9K]

Answer:

179.5 - 180.5

Step-by-step explanation:

Time is a continuous variable. The minimum sleep time per night per subject here, is given as 1 minute.

Larger sleep times could be 1.08 minutes, 2.99 minutes, and other continuous/infinite values. Remember there are 60seconds in a minute and in-between seconds, there are milliseconds. So time is a continuous variable.

In this case though, our measurement of time is given in whole number units (integers). Our precision of measurement is 1 unit. We have an observed value of 180 minutes (the first subject's sleep time). The real limits of this value are 179.5 to 180.5

7 0
1 year ago
Plzzzzzz help. I have to waist so many points becouse peaple dont answer my question plzzzzzz help will give brainliest (pic dow
Ronch [10]

Answer:

10(2M+3S)

20M+30S

Step-by-step explanation:

we know that

The number of kWh of energy that the model house generate per year is given by the sum of  kWh of energy generates by the windmills multiplied by the number of windmills, plus the  kWh of energy generates by the solar panels multiplied by the number of solar panels.

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2M+3S

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10(2M+3S)

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20M+30S

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1 year ago
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I'm horrible at this so I'm just guessing.
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