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Ilya [14]
3 years ago
14

An isosceles triangle with angles b and c having the same measure is shown. Find the measure of each angle whose degree measure

is represented with variables. A= x+ 7y+41,B= 2y+13,C=6x+15
Mathematics
1 answer:
Anton [14]3 years ago
8 0

Answer:

A = 114°, B = C = 33°

Step-by-step explanation:

The triangle relationships let you write two equations:

A+B+C = 180

B=C

Substituting the expressions for A, B, and C, you have ...

(x+7y+41) +(2y+13) +(6x+15) = 180

7x +9y +69 = 180

7x +9y = 111

And the second equation gives ...

(2y+13) = (6x+15)

6x -2y =-2

3x -y = -1

Now, we can add 9 times this second equation to the first to eliminate the y-variable.

(7x +9y) +9(3x -y) = (111) +9(-1)

34x = 102

x = 3

Then the angle measures are ..

B = C = 6·3+15 = 33

A = 180 -2·33 = 114

The angles in the triangle are (A, B, C) = (114°, 33°, 33°).

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Answer:

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7 0
2 years ago
2. In a relationship between variables, what is the variable called that changes in response to
valkas [14]

Answer:

A dependent variable

Step-by-step explanation:

is a variable whose value will change depending on the value of another variable, called the independent variable. Dependent variables are also known as outcome variables, left-hand-side variables, or response variables.

4 0
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Answer:

144

Step-by-step explanation:

On this shape we are going to splt up the 4 triangles for the square to make it simple.

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Then multiply the area of the triangle, 27, to get the total area of all 4 triangles (since they all have the same measurements)

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108 is the area of all 4 triangles

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Lastly, just add the areas of the triangles and the square together

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5 0
2 years ago
Which point is a solution to the linear equality y&lt;-1/2x+2
Effectus [21]

Answer:

There are many points that are solutions to the equation, but one of which would be (1, 2)

Step-by-step explanation:

In order to tell if they are a solution, we use the values in the inequality and see if it results in a true statement.

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Since it is a true statement, we know it is a solution.

5 0
3 years ago
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