Answer:
5(F+13)=125 F=12
Step-by-step explanation:
Answer: x=27
Step-by-step explanation:
The degrees of any triangle are equal to 180
83+43= 126 so 126 degrees out of 180 are accounted for
180-126=54 this is what is left over to equal 2x
54/2=27 divide 54 in half, to get 27, (27x2=54)
Let the third angle of the triangle be y.
y + 64° + 45° = 180° (angle sum of triangle is 180°)
x + y = 180° (angle of a straight line is 180°)
Notice that they both equal 180°. This means that they are the same thing, hence:
y + 64° + 45° = x + y
Since y = y, it is not necessary to write them down. Remove y from both sides of the equation:
64° + 45° = x
Surprise! exterior angle = sum of interior opposite angles.
I hope this clears up any confusion you might have. If not, feel free to leave a comment with your question.
R=8+I
S=4R
R+I+S=112
R+R-8+4R=112
6R=120
R=20
So therefore, Ruby worked 20 hours, Svetlana worked 80 hours, and Isaac worked 12 hours.
<span />
<span>Solve:(x+5)^2 =16
</span><span>
(x+5)^2 =16
x^2 + 10x + 25 - 16 = 0
</span>x^2 + 10x + 9 = 0
(x+9)(x+1) = 0
x + 9 = 0
x = -9
x +1 = 0
x = -1
answer: x=-1 and x = -9
Solve: a^2 +12a + 36 = 225
a^2 +12a + 36 = 225
a^2 +12a + 36 - 225 = 0
a^2 +12a - 189 = 0
(a-9)(a+21) = 0
a - 9 = 0
a = 9
a + 21 = 0
a = -21
answer: a = -21 and a = 9
