Answer:
AC=7.5 cm
CB=10.5cm
Step-by-step explanation:
Since we don't know the distance from C to B, we can label it as x. Our equation will be x+(x-3)=18. Simplify that so it is 2x-3=18. Add 3 to both sides and get 2x=21. x=10.5 So AC=7.5 cm and CB is 10.5 cm
Answer:
It's QR (option b) which is a congruent part of the figure. You can also figure out if they are same by seeing they both as the longest sides..
The equation is of the form y = mx + c, where m is the slope and c just a constant. In this example, m=-5 and c=-2/3, so the slope is -5. The -2/3 is just a vertical offset and is irrelevant.
Polynomial 1 : x²-x²+4x -2+1 = 4x -1
Polynomial 2 : 3x-x-2x²-2+1 = -2x²+2x-1
Polynomial 3 : 4 -2x+x-x²+x²-x² = -x²-x+4
According to the question,
Polynomial 1+Polynomial2+Polynomial3 + Polynomial4 = 6x
=> 4x -1+ (-2x²+2x-1) +(-x²-x+4) + Polynomial4= 6x
=> -3x²-x+2+Polynomial4= 0
<h2>=> 3x²+x -2= Polynomial4</h2>
OPTION B
Answer:
X= 11
Y= 3
Unlabeled angle: 56
Step-by-step explanation:
I attached a photo with the angles labeled to help it make more sense :)
Set up an equation system to find x and Y: (<C+<D=180), (<C=<A)
<C and <D are supplementary so that's why they equal 180.
<B and <D are corresponding angles which are always equal. (<A and <C are also corresponding angles)
Anyways here's the equation:
(13x-19)+(17y+5)=180, (13x-19)=(9x+25)
Calculate and you'll get x=11 and y=3
To find angle B put 3 into equation D since they are equal.
17(3)+5=56