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3 years ago

Is X and Y in direct proportion? If so, how?

Mathematics

1 answer:

Schach [20]3 years ago

5 0

Answer:

Step-by-step explanation:

For X and Y to be in proportion, The values should both be the same so if x is 10 y is 10 and so on.

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Why are parabolsas used for

JulsSmile [24]

Answer:

Parabolas are frequently used in physics and engineering for things such as the design of automobile headlight reflectors and the paths of ballistic missiles. Parabolas are frequently encountered as graphs of quadratic functions.

8 0

3 years ago

Read 2 more answers

What is the circumference of the circle? (use 3.14 for pi)

Alina [70]

Step-by-step explanation:

$Circumference = d\pi$

$Circumference = (18) \pi$

$Circumference = 56.52$

The circumference of the circle is 56.52 km which is letter choice B.

3 0

3 years ago

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A=h(a+b)/2 solve for h

OlgaM077 [116]

Well h would equal 2A over a+b

3 0

3 years ago

Simplify (1-6)(-4-7)

lakkis [162]

Answer:

I’m guessing you subtract the numbers from the inside of the parenthesis and then multiply the two.

(-5)(-11) = 55

I hope this is correct.

7 0

2 years ago

The larger of two numbers is 7 times the smaller number. Three times the larger number is 7 more than 4 times the smaller number

Juliette [100K]

Let the smaller number be x.

Given, the larger number is 7 times the smaller number.

So, the larger number = 7x.

Given, 3 times the larger number is 7 more than 4 times the smaller number.

So we can write the equation as,

$3(7x) = 4(x)+7$

$3(7x) = 4x+7$

$21x = 4x+7$

Now we have to move 4x to the left side by subtracting 4x from both sides.

$21x-4x = 4x-4x+7$

$21x-4x = 7$

$17x = 7$

To get x, we will divide both sides by 17. We will get,

$\frac{17x}{17} = \frac{7}{17}$

$x = \frac{7}{17}$

So the smaller number = $\frac{7}{17}$

The larger number = $7(\frac{7}{17} )$ = $\frac{49}{17}$

So we have got the required numbers.

Smaller number = $\frac{7}{17}$ and larger number = $\frac{49}{17}$ .

4 0

3 years ago