The system of linear equations can be used to find the number of nickels, n, and the number of quarters, q, yolanda used is n + q = 28
n + q = 280.05n + 0.25q = 4
<h3>Simultaneous equation</h3>
n + q = 28
0.05n + 0.25q = 4
n = 28 - q
0.05n + 0.25q = 4
0.05(28 - q) + 0.25q = 4
1.4 - 0.05q + 0.25q = 4
- 0.05q + 0.25q = 4 - 1.4
0.20q = 2.6
q = 2.6 / 0.20
q = 13
Substitute into
n + q = 28
n + 13 = 28
n = 28 - 13
n = 15
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Answer:
the answer is 8 because 100% of 8 is 8 and 50% of 8 is 4
Answer:
Separating the 3x and -5 apart from the (x+1)
Step-by-step explanation:
It would turn out to be (3x-5)(x+1) !
Answer:
The answer is below
Step-by-step explanation:
A linear equation is represented by the equation y = mx + b, where m is the rate of change, b is the value of y at x = 0, y is a dependent variable and x is an independent variable.
a) Given that number of chirps per minute, C is dependent on the temperature, T, when T = 45 degrees, C = 0, this can be represented as (45, 0).
Also at 75 degrees, C = 126 it can be represented as (75, 126).
Using (45, 0) and (75, 126), we can determine the equation of the line from:
b) At t = 90°:
C = 4.2(90) - 189
C = 189 chirps per min
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