Answer:
$123.25
Step-by-step explanation:
A selling price reflecting a 45% markup can be found by multiplying the wholesale price ($85) by (1 + 0.45), or 1.45:
1.45($85) = $123.25
First
angle in front of c is 30°, so hypotenuse is equal to 2c
it's right triangle, so let's use Pythagorean theorem\
![(2c)^2=c^2+4^2\\4c^2=c^2+16\\3c^2=16\\\\c^2=\dfrac{16}{3} \\\\c=\dfrac{4}{\sqrt{3} } =\dfrac{4\sqrt{3} }{3 }](https://tex.z-dn.net/?f=%282c%29%5E2%3Dc%5E2%2B4%5E2%5C%5C4c%5E2%3Dc%5E2%2B16%5C%5C3c%5E2%3D16%5C%5C%5C%5Cc%5E2%3D%5Cdfrac%7B16%7D%7B3%7D%20%5C%5C%5C%5Cc%3D%5Cdfrac%7B4%7D%7B%5Csqrt%7B3%7D%20%7D%20%3D%5Cdfrac%7B4%5Csqrt%7B3%7D%20%7D%7B3%20%7D)
Second
b - the base of the triangle, angles at the base are equal ⇒ cathets are equal
it's right triangle, so let's use Pythagorean theorem
![b^2=7^2+7^2\\b^2=49+49\\b=\sqrt{2\times49} =7\sqrt{2}](https://tex.z-dn.net/?f=b%5E2%3D7%5E2%2B7%5E2%5C%5Cb%5E2%3D49%2B49%5C%5Cb%3D%5Csqrt%7B2%5Ctimes49%7D%20%3D7%5Csqrt%7B2%7D)
Answer:
.9b+2
Step-by-step explanation:
You first add 3.8b and -2.9b which equals .9b
Then you add -7 and 9 which equals 2
Hope this helped!
16 times the square root of x:
16 * √x so f(x) = 16√x