Answer:
44.59
Step-by-step explanation:
First add 20% to $34.65 and get $41.58, add the tax and your answer is $44.59.
Answer:
im gonna assume the 10 - 20 is what the equation is = to if not x wouldnt be = to anything x = -1.5
Step-by-step explanation:
-2.25x + 8.75x = 10-20
-2.25x+ 8.75x = -10
6.50x = -10 divide both sides by 6.5
x = -1.5
We can use the formula for the area of a triangle to solve for these dimensions.
The formula for the area of a triangle is
![A=\frac{1}2bh](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B1%7D2bh)
.
We know that the area of the triangle is 50, so here's our new equation:
![50=\frac{1}2bh](https://tex.z-dn.net/?f=50%3D%5Cfrac%7B1%7D2bh)
How can we solve for
![b](https://tex.z-dn.net/?f=b)
and
![h](https://tex.z-dn.net/?f=h)
?
Well, we know how to solve equations with one variable.
And since the height is four times the base, we can replace
![h](https://tex.z-dn.net/?f=h)
with
![4b](https://tex.z-dn.net/?f=4b)
and solve for b!
![50=\frac{1}2b(4b)\\\\50=\frac{1}2(4b^2)\\\\ 50=2b^2 \\\\ 25=b^2 \\\\ \boxed{b=5\ ft}](https://tex.z-dn.net/?f=50%3D%5Cfrac%7B1%7D2b%284b%29%5C%5C%5C%5C50%3D%5Cfrac%7B1%7D2%284b%5E2%29%5C%5C%5C%5C%2050%3D2b%5E2%20%5C%5C%5C%5C%2025%3Db%5E2%20%5C%5C%5C%5C%20%5Cboxed%7Bb%3D5%5C%20ft%7D)
And of course, since the height is four times that,
Answer:
991 is the correct answer