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KIM [24]
3 years ago
11

A student performs an experiment to find out if adding 1 teaspoon of salt to a bubble solution of soap and water affects bubble

making.
What is the independent and dependent variable?
Please help!!!!!!!!!
Mathematics
1 answer:
Zina [86]3 years ago
6 0
Independent variable: 1 tsp. salt
dependant variable: bubble solution
Because you're adding the salt to the solution, the salt is independant. that's what is making the change. the dependant variable is what is being tested; the bubble solution.
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Answer:

(-4, -1)

Step-by-step explanation:

x = 4y

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Plug in 4y for x in the second equation:

-4(4y) - y = 17

Simplify. Remember to follow PEMDAS. Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other.

First, multiply 4y with -4:

-4(4y) = -16y

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Simplify. Combine like terms:

-16y - y = 17

-17y = 17

Isolate the variable, y. Divide -17 from both sides:

(-17y)/-17 = (17)/-17

y = 17/-17

y = -1

Plug in -1 for y in the first equation:

x = 4y

x = 4(-1)

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Answer: (-4, -1)

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Step-by-step explanation:

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Sₙ = n/2(a + Uₙ)

Sₙ = n/2(1 + 2n - 1)

Sₙ = n/2(2n)

Sₙ = n²

∴ so, the solution of n is all natural even numbers

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