Answer:
10%
Step-by-step explanation:
60% + 30%=90%
so they have 10%of the original amount left.
To find the solutions to this equation, we can apply the quadratic formula. This quadratic formula solves equations of the form ax^2 + bx + c = 0
x = [ -b ± √(b^2 - 4ac) ] / (2a)
x = [ -15 ± √((15)^2 - 4(2)(4)) ] / ( 2(2) )
x = [-15 ± √(225 - (32) ) ] / ( 4 )
x = [-15 ± √(193) ] / ( 4)
x = [-15 ± sqrt(193) ] / ( 4 )
x = -15/4 ± sqrt(193)/4
The answers are -15/4 + sqrt(193)/4 and -15/4 - sqrt(193)/4.
Easy Peasy Lemon Squeezy.
it's difficult because you are looking too hard. think simply. why does it tell you that angle is 40°?
Because if you follow the arrow back to where it starts you will see that exact same angle.
so now you know 1 (not m° or n°) angle inside the triangle is 40° and a complete triangle is 180°.
you also know a straight line has 180° on each side. and the line going from m° to n° splits that in half. meaning there is 90° to the right of it and 90° to the left of it. which means n° must equal 90°.
now you know you have 1 angle inside the triangle with 40° and n°=90° now you just need to find how much m° is.
add 40°+90° then Subtract from 180° to get m°.
180°-130°=50°
m°=50°
Answer:
B
Step-by-step explanation:
Because if line segment BD bisects angle B then angles CBD and ABD can be proved congruent by SAS
The correct match are as follows:
<span>1. Plane.
</span>B) a flat surface that extends infinitely and has no depth; it has length and width
<span>2. Perpendicular Lines.
</span><span>D) two lines that intersect at 90˚ angles.
</span><span>
3. Parallel Lines.
</span><span>A) two lines that lie within the same plane and never intersect.
</span><span>
4. Circle.
</span><span>C) a set of all points in a plane that are a given distance from a point.
</span><span>
5. Angle
</span><span>E) a figure consisting of two rays with a common endpoint.</span>
