Answer: -7
Step-by-step explanation: x=3 and y=2
D(t) = 186,000t.....t represents the number of seconds....so in 32 seconds...t = 32
d(32) = 186,000(32)
d(32) = 5,952,000 miles <==
If someone had an equation that was in slope intercept form, the y intercept and slope are easily accessible and easily calculable.
<span>Then, if someone had a line that was in slope intercept form, then they would probably choose to use the y intercept and slope to graph that line.
</span>
Answer:
The amount invested at 15% = $257.14
The amount invested at 8% = $942.86
Step-by-step explanation:
Let the amount invested at:
15% = a
8% = b
Total invesment = $1200
Hence:
a + b= $1200....... Equation 1
a = 1200 - b
15% × a + 8% × b = 9.5% × 1200
0.15a + 0.08b = 0.095 × 1200
0.15a + 0.08b = 114..... Equation 2
We substitute 1200 - b for a in Equation 2
0.15(1200 - b) + 0.08b = 114
180 - 0.15b + 0.08b = 114
- 0.15b + 0.08b = 114 - 180
- 0.07b = - 66
b = -66/-0.07
b = $942.85714286
Approximately = $942.86
Note that:a = 1200 - b
a = $1200 - $942.86
a = $257.14