Answer:
B. 10
Step-by-step explanation:
First, we need to recognize that the two triangles are similar (the triangle with a leg value of 21 and the triangle with a leg value of 4 and hypotenuse x)
Let's first label the leg of the second triangle as y.
Then, we can set up this equation
Cross multiplying gives us
84=y^2
So, y=sqrt(84) or 2 sqrt(21).
Now, using the pythagorean theorem, we get
4^2+2sqrt(21)^2=x^2
100=x^2
x=10
Answer:
92
Step-by-step explanation:
angle a and b add up to 180 degrees
4x-20+2x+8=180
add like terms
6x+12=180
x=28
then substitute to get 92
The indefinite integral ∫dx/x is ln(x), so your integral is
... 7(ln(15)-ln(3)) = 7ln(15/3)
... = 7ln(5) ≈ 11.266065387
Answer:
He should charge 8.50 for each car for a profit of 162 dollars.
Step-by-step explanation:
Plot y = (x - 4)(40 - 8(x - 8)) on a graphing calculator such as desmos
Answer:
25%
Step-by-step explanation:
To find the percentage, we take the amount that found math as their favorite subject and divide it by the total amount of students.
33/132 = .25
This is in decimal form. To change it to percent form, multiply by 100
.25 * 100 = 25 percent
