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Oksi-84 [34.3K]
2 years ago
7

Solve the proportion to determine the value of x. 4x / 15 = 60 / x

Mathematics
2 answers:
natali 33 [55]2 years ago
8 0
4x/15 = 60/x
4x^2 = 900
x^2 = 225
x = 15
AnnZ [28]2 years ago
5 0
4x/15 = 60/x

4x² = 60 * 15

x² = 60 * 15 / 4 = 15 * 15 = 225

x = 15, -15

Hope it helps!
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Answer:

Step-by-step explanation:

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4 0
2 years ago
Read 2 more answers
What is the difference?
Crazy boy [7]

Answer:

<h2>D. \frac{x^{2}+3x-12 }{(x-5)(x+3)(x+7)} \\ or StartFraction x squared + 3 x minus 12 Over (x + 3) (x minus 5) (x + 7) EndFraction</h2>

Step-by-step explanation:

Given the expression \frac{x}{x^{2}-2x-15 } - \frac{4}{x^{2} + 2x - 35 }, the dfference is expressed as follows;

Step1: First we need to factorize the denominator of each function.

\frac{x}{x^{2}-2x-15 } - \frac{4}{x^{2} + 2x - 35 }\\= \frac{x}{x^{2}-5x+3x-15 } - \frac{4}{x^{2} + 7x-5x - 35 }\\= \frac{x}{x(x-5)+3(x-5) } - \frac{4}{x( x+ 7)x-5(x +7) }\\= \frac{x}{(x-5)(x+3) } - \frac{4}{(x-5)(x +7) }\\\\

Step 2: We will find the LCM of the resulting expression

=  \frac{x}{(x-5)(x+3) } - \frac{4}{(x-5)(x +7) }\\= \frac{x(x+7)-4(x+3)}{(x-5)(x+3)(x+7)} \\= \frac{x^{2}+7x-4x-12 }{(x-5)(x+3)(x+7)} \\= \frac{x^{2}+3x-12 }{(x-5)(x+3)(x+7)} \\

The final expression gives the difference

6 0
3 years ago
What is the distance between the points (10, -7) and ( 10, 9) on the coordinate plane?
xenn [34]
16 on the y-axis, 0 on the x axis
7 0
3 years ago
I am doing online class and I am looking for a little help please
kati45 [8]
The domain is about how far left-to-right the graph goes.
In relation to the x-axis, the graph starts at x = –3 (with an open circle at –3) and then continues over to the right forever.
This is the shown in the picture with the red markup.
In interval notation, this is (-3, infinity).

Remember to use that left-to-right orientation for interval notation!

The range is in turn about how low to how high the graph goes.
On the graph, I’d do the same thing I did on the red marked up graph and compare the graph to the y-axis.
The graph starts down at y = –5 (with an open circle at –5) and then continues on up forever.
In interval notation, this is (-5, infinity).

4 0
2 years ago
5x + 2 y = 7<br> 4x + y = 8
dsp73
4y.
Is the answer
Hope this helps
8 0
2 years ago
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