3 years ago

Why is it important to be able to solve for variables in formulas?

1 answer:

3 0

Solving for variables in formulas helps develop basic math skills and also pushes students to think critically. Also, there are many formulas that solve for useful things in science, math, business, and engineering. These formulas sometimes require people to solve for certain variables.

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7x²+3y²-28x-12y=-19

grigory [225]

Complete the square for x and y.

7x^2 + 3y^2 - 28x - 12y = -19

7x^2 - 28x + 3y^2 - 12y = -19

7(x^2 - 4x) + 3(y^2 - 4y) = -19

7(x^2 - 4x + 4) + 3(y^2 - 4y + 4) = -19 + 28 + 12

7(x - 2)^2 + 3(y - 2)^2 = 21

$\dfrac{(x - 2)^2}{3} + \dfrac{(y - 2)^2}{7} = 1$

4 0

3 years ago

How many hundreds are equal to 6/10

Leya [2.2K]

I believe it would be 60

8 0

3 years ago

Read 2 more answers

Jose makes a triangle using three sticks of lengths 20 inches, 21 inches, and 28 inches. Is the

bogdanovich [222]

Answer:

no because for right angle triangle the sum of the sq of the two smallest side is equal to the sq of biggest side