We can model this situation as a system of linear equation, where n is the number of nickels and q is the number of quarters.
![\left \{ {{0.05n + 0.25q=8.10} \atop {0.25n+0.05q=17.70}} \right.](https://tex.z-dn.net/?f=%20%5Cleft%20%5C%7B%20%7B%7B0.05n%20%2B%200.25q%3D8.10%7D%20%5Catop%20%7B0.25n%2B0.05q%3D17.70%7D%7D%20%5Cright.%20)
Solving the system of equations, there are 67 nickels and 19 quarters.
Answer:
C) 60 degrees
Step-by-step explanation:
An equilateral triangle has all equal angles. We know that all the angles of a triangle add up to 180 degrees. Therefore 45+45+45=180 giving you an equilateral triangle angle measure.
Answer:
a
Step-by-step explanation:
I am not sure if this will help but you can use Pythagorean Theorem which is a squared + b squared = c squared.
A^2 and b^2 would be the legs of the triangle and c^2 would be the hypotenuse.
You need two numbers for this though. I’m sorry if this doesn’t help.
Answer:
-4.75
Step-by-step explanation:
Slope = (y2-y1) / (x2-x1)
So applying the formula
(-29-9)/(15-7)
= -38/8 = -4.75