Answer:
The equation is,

Step-by-step explanation:
According to the question, the equation is cubic and have roots -1 (with multiplicity of 2) and -2.
So, the equation is,

[Since, when a , b , c are the roots of a cubic equation, the equation is
given by
]
Answer:
The number of hours did Sarah practice more than Leilani is
hours .
Step-by-step explanation:
Given as :
The time for which Leilani practiced piano =
hours
The time for which Sarah practiced piano =
hours
Let the number of hours did Sarah practice more than Leilani = T hours
<u>Now, According to question</u>
The number of hours did Sarah practice more than Leilani =
hours -
hours
Or, T =
hours
Or, T =
hours
So,The number of hours did Sarah practice more than Leilani = T =
hours
Hence, The number of hours did Sarah practice more than Leilani is
hours . Answer
Answer:
x = -3
y = 7
Step-by-step explanation:
y = -2x + 1
7 = -2x + 1
<u>-1 -1 </u>
6 = -2x
divide by -2
x = -3