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2 years ago

Please help 9/5a+12=5

Mathematics

1 answer:

vova2212 [387]2 years ago

8 0

A = -35/9 is the answer

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What are the x and y intercepts for -2x+y=-2

a_sh-v [17]

Answer:

x: (1,0)

y: (0,-2)

Step-by-step explanation:

3 0

2 years ago

Is 7.7777777777 an irrational number

andrezito [222]

This is a repeating number so i believe its rational

5 0

2 years ago

Read 2 more answers

if you double the input of a function and it results in twice the output and if you triple the input and it result in three time

bearhunter [10]

A function behaving as you state is a linear function, which means that the output varies directly with the input.

So, there exists some constant $k \in \mathbb{R}$ such that your function is in the form

$f(x) = kx$

In fact, if you double the input, you have

$f(2x) = k\cdot(2x) = 2\cdot (kx) = 2f(x)$

And similarly

$f(3x) = k\cdot(3x) = 3\cdot (kx) = 3f(x)$

Note that this is a guess, it may happen that output doubles (triples) if you double (triple) the input, and still the function is not like $y=kx$ .

For example, the function

$f(x) = \dfrac{x^3}{3} - 2x^2 + \dfrac{14}{3}x -2$

is such that

$f(1) = 1,\ f(2) = 2,\ f(3) = 3$

So, it may seems that doubling and tripling the input doubles and triples the output, but this is not true for every input, for example,

$f(2) = 2,\ f(4) = 6$

And so doubling the input didn't double the output.

8 0

3 years ago

Read 2 more answers

If (x + y)^2 = 105 and x^2 + y^2 = 65, what is the value of xy?

lesya692 [45]

$\boxed { \boxed {(a + b)^2 = a^2 + 2ab + b^2}}$

$(x + y) ^2 = 105$

$x^2 + 2xy + y^2 = 105$

$x^2 + y^2 + 2xy = 105$

$\text{Given that } x^2 + y^2 = 65,$

$65 + 2xy = 105$

$2xy = 105 - 65$

$2xy = 40$

$xy = 20$

$\boxed { \boxed {\text{Answer: xy = 20}}}$

8 0

3 years ago

PLEASE HELP ME WITH MY PROBLEM!!! 50 POINTS!!!

Molodets [167]

Well he started off right by solving for y=y to find the abscissa of the intersection points between the two points,but then he assumed that their ordinate (y coordinates) are both zero,which is incorrect obviously. To find their ordinate,all we have to do is plug the x values into any of the two equations, since they both will pass through that point ੴ

$y = 4 x+ 1 \\ y = 4(3) + 1 \\ y = 12 + 1 \\ y = 13$

$y = 4x + 1 \\ y = 4( - 2) + 1 \\ y = - 8 + 1 \\ y = - 7$

I chose to plug the values in the second linear equation, since it's easier to compute

<h2>Points:</h2>

5 0

2 years ago