Answer:
The angles are 45°, 60° , 75°
Step-by-step explanation:
<h3>
Angle sum property:</h3>
Sum of all the angles of a triangle is 180°.
Equation:
3x + 5x + 4x = 180
Combine like terms,
12x = 180
x = 180/12

3x = 3 *15 = 45°
5x = 5* 15 = 75°
4x = 4 *15 = 60°
The equation of a line that is perpendicular to the given line is y = –4x – 16.
Solution:
The equation of a line given is y = 0.25x – 7
Slope of the given line(
) = 0.25
Let
be the slope of the perpendicular line.
Passes through the point (–6, 8).
<em>If two lines are perpendicular then the product of the slopes equal to –1.</em>




Point-slope intercept formula:

and 
Substitute these in the formula, we get



Add 8 on both sides of the equation.


Hence the equation of a line that is perpendicular to the given line is
y = –4x – 16
<em>Answer: 24/10</em>
<em>Answer: 24/10Step-by-step explanation:</em>
<em>1</em><em>)</em><em> </em><em>1*1÷10 +1*1÷5+2÷20</em>
<em>2</em><em>)</em><em>(1*10+1)/10+(1*5+1)/5+2/20 </em><em>3</em><em>)</em><em>11/10+6/5+2/20</em>
<em>4</em><em>)</em><em>11/10+6/5+1/10</em>
<em>5</em><em>)</em><em>11/10+12/10+1/10</em>
<em>6</em><em>)</em><em>(11+12+1)/10</em>
<em>7</em><em>)</em><em>24/10</em>
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Answer:
what grade is this for
Step-by-step explanation: