Answer:
7 quarters, 8 nickels
Step-by-step explanation:
So the system of equations you have is:
x + y = 15
0.25x + 0.05y = 2.15
Here's how to solve:
first, multiply both sides of the equation 0.25x + 0.05y = 2.15 by 100 to get rid of the decimal places:
25x + 5y = 215
Then, you can divide both sides by 5 to simplify it more:
5x + y = 43
Now, you have the system of equations:
5x + y = 43
x + y = 15
Now subtract the two equations:
4x = 28
divide both sides by 4
x = 7
plug x = 7 into the equation x + y = 15 to solve for y:
7 + y = 15
subtract 7 from both sides
y = 8
So you know that there are 7 quarters and 8 nickels.
Look on this website they have all the answer getmathhelp.net
That's FALSE.
In the first quadrant the co functions decrease with increasing angles while the non-co functions increase with angle in the first quadrant.
Since reciprocals move in the opposite direction, each reciprocal pair is a co functions and a non co function. So we're FALSE here since we have two co functions, which can't be reciprocals.
In our case, the reciprocal of cosine is secant, and the reciprocal of cotangent is tangent.
Answer:
it's 1and 3 are the modes
