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Dimas [21]
3 years ago
11

I don’t know how to solve for Q.

Mathematics
1 answer:
Naya [18.7K]3 years ago
8 0

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)°

  ∠Q = 75°

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The equation below represents Function A and the graph represents Function B:
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Answer:

  Slope of Function B = 2 x Slope of Function A.

Step-by-step explanation:

The graph of Function B shows its slope to be 4 units up for 1 unit to the right, so 4.

The equation for Function A shows its slope to be the coefficient of x, so 2.

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4 is 2 times 2, so ...

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2 years ago
Classify the following system of equations.<br><br> 8x - 12y = -9<br><br> 18x + 27y = 21
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The following system of equations 8x - 12y = -9   and 18x + 27y = 21 are intersecting lines

<u>Solution:</u>

Given, system of equations are 8x – 12y = - 9 ⇒ (1)

And 18x + 27y = 21 ⇒ 6x + 9y = 7 ⇒ (2)

We have to classify the above given system of equations  

For the we have to find the solution for the given system of equations

So, now, multiply (1) with 9 and (2) with 12, such that both equations will have same coefficients for y terms, such that, it will be easier to find solution while calculations by cancelling.

72x – 108y = - 81

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(+) ---------------------------

144x + 0y = 3

144x = 3

x = \frac{3}{144} = \frac{1}{48}

Substitute "x" value in (2)

\begin{array}{l}{\rightarrow 6\left(\frac{1}{48}\right)+9 y=7} \\\\ {\rightarrow \frac{1}{8}+9 y=7} \\\\ {\rightarrow 1+72 y=56} \\\\ {\rightarrow 72 y=55} \\\\ {\rightarrow y=\frac{55}{72}}\end{array}

So, given system of equations has 1 solution \left(\frac{1}{48}, \frac{55}{72}\right) which means that, they are intersecting lines.

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What is the place value of the 4 in 475
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