Answer:

Step-by-step explanation:
Let
blank (for convenience)

(change
into its decimal form)
(divide
on both sides)

∴ Blank = 50
Hope this helps :)
Answer: Triangle ADB is congruent to CBD
Step-by-step explanation:
S1: Try to measure the sides to look alike.
S2: Compare your answers to someone in your class!!!
Answer:....
Step-by-step explanation:
first we need to find the base of the triangle, so the total is 20, they also give us 12, so we subtract 20-12=8 now divide. 8/2=4. Now we use the 4 and the 60. We use SOH-CAH-TOA, they give us the base now we need to find AB which is the hypotenuse. So we take out the TOA, and the 4 is the adjacent so we take out the SOH, we have CAH now, so we use cos. Now equation time....
since x is the bottom we switch
, which equals 8. AB=8.
Now to find the perimeter. We still use the 4 to find the hypotenuse so we can find the outside side. For this one they tell us to use 45, so now lets see what method we use. SOH-CAH-TOA. We need the hypotenuse and they give us the adjacent, so we use cos again. Now setting up the equation...
x is at the bottom again to we switch.
which equals to 5.657 or you can round it. Now we add everything.
20+12+5.657+5.657= 45.314 or you can round it to 45.
No because x=4 and y=-5 and when you plug it in you get 5(4)+2(-5)=8 20+-10=8 and 10= does not work so it is not a possible solution.
Answer:
V= 240 sq cm
A= 268 sq cm
Step-by-step explanation:
V= l * w * h
V= 10 * 8 * 3
V= 240 sq cm
A=2(wl+hl+hw)
A=2(8*10 + 3*10 + 3*8)
A= 268 sq cm