Answer:
Step-by-step explanation:
Let d represent the number of dimes. Then 81-d is the number of nickels and the total value in cents is ...
10d +5(81-d) = 530
5d +405 = 530 . . . eliminate parentheses
d +81 = 106 . . . . . divide by 5
d = 25 . . . . . . . . . subtract 81; number of dimes
81 -d = 81 -25 = 56 . . . . . number of nickels
There are 25 dimes and 56 nickels in the box.
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<em>Comment on the method of solution</em>
It usually works well to let the variable represent the amount of the highest-value contributor (dimes). This keeps the numbers positive as the solution progresses.
Answer:
7
Step-by-step explanation:
2 ÷ 2/7
We use copy dot flip
2 * 7/2
2/1 * 7/2
Rewrite to make the math easier
2/2 * 7/1
7/1
7
1 * 7
When you plot the given points, you obtain the graph attached. As you can see, the function has two turning points, so:
Minimum degree=(2 turning points)+1=3
Therefore, the minimum degree of a polynominal model is 3, and it can be expressed as below:
f(x)=ax³+bx+cx+d
The answer is:3
Answer:
The vertex form of a quadratic is given by
y = a(x – h)^2 + k, where (h, k) is the vertex. h may act as "x" in this case.
Step-by-step explanation:
The vertex form of a quadratic is given by
y = a(x – h)^2 + k, where (h, k) is the vertex.
You must simply get an equation in this format to find h and k.
The only way to properly answer your question is with the image, but without it, I can still give you a guess of what it will be.
Generally, with these types of problems, the cyclist will begin riding at an increasingly fast pace, Then they will begin slowing down, so the line decreases. When he stops for water the line should remain constant. Meaning a straight horizontal line such as this ------------------
If you can include an image I can give you the exact answer you're looking for, however.
