Answer:
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - x + 3 ← is in slope- intercept form
with slope m = -
Given a line with slope m then the slope of a line perpendicular to it is
= - = - =
Answer:
x = 63°
Step-by-step explanation:
See the attachment
The measure of the angles in a triangle = 180 . If the sides of a triangle are congruent, then the base angles are equal. So in the triangle with the 72°, you have another angles = 72°. Looking at the same triangle, 72° + 72° + part of the right angle = 180°. Do the math! 72° + 72° = 140°; 180° -144° = 36° (this is the measure of the piece of the right angle that is in the triangle with the 72° angle.. So the other part of the 90°(right angle) = 90° - 36° = 54°.
Now to solve for x: You know that if the sides are congruent in a triangle, then the base angles are equal. Thus this triangle angles are x, x, and 54°.
You know that a triangle = 180°, so x + x + 54° = 180°; 2x +54° = 180°; 2x = 126°; x = 63°
Answer:
Step-by-step explanation:
y = x + 9 is the given equation of a line. The coefficient of 'x' is 1. Therefore the slope of this line is 1.
The slope of any line perpendicular to this y = x + 9 is the negative reciprocal of 1, which is -1.
Using the point-slope formula for the equation of a straight line, y - k = m(x - h), we identify h and k as -2 and -2 respectively, from the given point (-2, -2).
Then, y - k = m(x - h) becomes y + 2 = -1(x + 2) (in point-slope format)
Answer:63
Step-by-step explanation: because if your trying to find x you round to multiple or divide depends on the problem you ask so if you where to multiple like i did you may get the wrong answer but that's where dividing comes in like if i did 7 x 8 which would give me 56 then divide by 2 which would then give me 28 and theres the answer.
Hope i helped i havent done this in a long time so it may be wrong!