2 years ago

Are x and y proportional?

Mathematics

1 answer:

Vesna [10]2 years ago

4 0

Answer:

yes, or try no if you have enough guesses

Step-by-step explanation:

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What are the solutions to the quadratic equation x^2-16=0

maks197457 [2]

Good evening.

This is a incomplete quadratic equation, because it does not have the term bx. Therefore, we can solve this faster with the following strategy:

$\mathsf{x^2 - 16 = 0}$

Add 16 to both sides:

$\mathsf{x^2 - 16 + 16 = 0 + 16}\\ \\ \mathsf{x^2 = 16}$

Take the square root:

$\mathsf{\sqrt {x^2} = \pm\sqrt{16}}\\ \\ \mathsf{\boxed{\mathsf{x = \pm4} }}$

Therefore:

$\boxed{\boxed{\mathsf{S=\{-4, \ +4\}}}}$

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3 years ago

$425 is 17% of what number

9966 [12]

Set it up at 425=.17x
Solve for x by dividing both sides by .17 to get x=2500
Answer is 2500

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3 years ago

20 - (-3) + 15 help a girl outt :(

Kryger [21]

Answer is 38

20 -(-3) + 15

20 + 3 + 15

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3 years ago

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Two trains, train A and train B, weigh a total of 251 tons. Train A is heavier than Train B. The difference of their weights is

olga55 [171]

Train A weighs 181 tons and train B weighs 70 tons.

3 0

3 years ago

find the equation of a line through the coordinate (3,6) and parallel to the line represented by y=5/3 x-1

maw [93]

Slope-intercept form:

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0 or (0,y))

For lines to be parallel, their slopes have to be the SAME.

The given line's slope is 5/3, so the parallel line's slope is also 5/3

y = 5/3x + b

To find "b", plug in the point (3,6) into the equation

y = 5/3x + b

6 = 5/3(3) + b

6 = 5 + b

1 = b

y = 5/3x + 1

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3 years ago