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abruzzese [7]
3 years ago
7

10/n = 18/27 what is n?

Mathematics
2 answers:
blsea [12.9K]3 years ago
7 0
Well, to understand what "n" is, we have to understand the relation between 18 and 27.
If we divide by 9, we'll notice that 18/27 simplifies to 2/3.
So, let's apply this to 10/n
10 over n must be the same ratio of 2/3.
10/2 is 5.
5*3 = 15.
n = 15.
Alternatively, cross multiply and solve.
10/n = 18/27
n will multiply with 18, 10 with 27.
18n = 270
/18     /18
n = 15
sergiy2304 [10]3 years ago
3 0
N = 10*27 / 87 =  270/18 = 15

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GuDViN [60]

Answer:

y =  \frac{1}{4}  \times  {2}^{x}  - 1

Step-by-step explanation:

Assuming the given logarithmic equation is

y =   \log_{2}( {4}{x }  - 4)

We interchange x and y to get:

x=   \log_{2}( {4}{y} - 4)

We solve for y now:

{2}^{x}  =  {4}{y}   - 4

We add 4 to both sides to get;

{2}^{x}  + 4 = 4y

Divide through by 4:

y =  \frac{1}{4}  \times  {2}^{x}  - 1

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3 years ago
The sum of two numbers is 46. The larger number is two less than three times the smaller number. Find the numbers.‍♀️
Alex787 [66]

Answer:

Smaller number: 12

Larger number: 34

Step-by-step explanation:

Let x represent the smaller number.

Let 3x - 2 represent the larger number (The larger number is two less than three times the smaller number, or x)

x + 3x -2 = 46

   Add 3x + x:

4x - 2 = 46

   Add 2 to both sides:

4x = 46 + 2

   Add 46 + 2:

4x = 48

    Divide both sides by 4:

4x/4 = 48/4

x = 12 is the smaller number

Since 12 is the smaller number, and the sum of the two numbers is 46, than the larger number must be 34.

I hope this helped you. If it did, please consider, rating, pressing thanks and/or giving my answer 'Brainliest.' Have a great day! :)

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3 years ago
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NARA [144]
The first one is the answer
8 0
3 years ago
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I don’t know how to solve for Q.
Naya [18.7K]

Answer:

  ∠Q = 75°

Step-by-step explanation:

Start by recognizing that the triangle is isosceles (the long sides are marked as being equal-length). That means angles Q and R have the same measure.

Next, you use the fact that the sum of angles is 180° to write an equation.

  ∠R +∠P +∠Q = 180°

  (2x +15)° +x° +(2x +15)° = 180° . . . . substitute the known values

  5x +30 = 180 . . . . . . . . . . . . . . . . divide by °, collect terms

  5x = 150 . . . . . . . . subtract 30

  x = 30 . . . . . . . divide by 5

Then angle Q is ...

  ∠Q = (2x +15)° = (2×30 +15)°

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GalinKa [24]
We have the following function that is a quadratic function:

y=-x+x^2

So the graph of this function is shown in the figure below. This is a <em>parabola</em> as you can see. The roots of this functions, that is, the x-intercepts are:

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Finally, another thing we can see from the graph is that the vertex is the point:

V(0.5,-0.25)


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3 years ago
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