Answer:
Step-by-step explanation:
The top triangle is similar to the whole triangle because of AAA
Then we know that the corresponding sides are similar
9/81=(3x-20)/(3x-20+56)
1/9=(3x-20)/(3x+36)
cross multiply
9(3x-20)=3x+36
27x-180=3x+36
24x=216
x=9
The complete question in the attached figure
we know that
the total the hours--------------- > 9+10+6+13+5=43 hours
Art hours------------->10
Math hours------------->9
Math and Art hours------> 10+9=19
if 43 hours ------------------> 100%
19 hours----------------------> X
X=19*100/43=44.19%---------- > <span>Approximately 45%
</span>
the correct answer is the option B about 45%
We know that
Any point <span>(x,y)</span> on the parabola is equidistant from the focus and the directrix
Therefore,
focus (0,4) and directrix of y=2
<span>√[<span>(x−0)</span></span>²+(y−4)²]=y−(2)
<span>√[x</span>²+(y-4)²]=y-2
x²+(y-4)²=(y-2)²
x²+y²-8y+16=y²-4y+4
x²=4y-12-----> 4y=x²+12----->y= (x²/4)+3
the answer is
y= (x²/4)+3
Hi,
Solving:
Equation haves a solution.
Hope this helps you understand your question better.
If you posses any additional questions you are welcome to comment below.
r3t40
7. Solve. 4(s – 3) = 2s + 6
Answer:
s=9