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cluponka [151]
2 years ago
6

Pls help?!?!?!?!?!??!!

Mathematics
1 answer:
harkovskaia [24]2 years ago
3 0

Answer:

m<A = 120°

m<C = 45°

Step-by-step explanation:

We can use the triangle sum theorem to find the measures of the angles.

m<A + m<B + m<C = 180°

Then substitute in their given values.

12x + 12 + 15 + 3x + 18 = 180°

Now simplify the equation and you get

15x + 45 = 180°

Continue to solve

15x = 135

x = 9°

Now substitute this value of 9 for the angle expressions of <A and <C

(12 x 9) +12 = m<A

m<A = 120°

(3 x 9)+ 18 = m<C

m<C = 45°

Hope this helps. To check your answer you can add up all the answers to see if it equals 180°.

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Answer:

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Step-by-step explanation:

Slope-intercept form: y = mx + b

Slope formula: \frac{y2-y1}{x2-x1}

Given points: (3, -7), (7, 2)

(3, -7) = (x1, y1)

(7, 2) = (x2, y2)

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First, let's find the slope. To do this, input the given points into the slope formula:

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To find the y-intercept, input the slope and one of the given points(in this example I'll use point (7, 2)) into the equation and solve for b:

2=\frac{9}{4}(7)+b

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The y-intercept is -\frac{55}{4}.

Now that we know the slope and the y-intercept, we can write the equation:

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6 0
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Is the number rational or irrational?
lapo4ka [179]
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4. rational: √289 = 14


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(A) and (D)

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4 0
3 years ago
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