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Answer:
A F(x)=30x
Step-by-step explanation:
just plug number in to the equations to see which one matches
Plug in 2 and 4 for every instance of x in the function g(x).
g(x) = 0.023x³ + 0.4x² − 2.1x + 8.3
g(2) = 0.023(2)³ + 0.4(2)² − 2.1(2) + 8.3 = 5.884
g(4) = 0.023(4)³ + 0.4(4)² − 2.1(4) + 8.3 = 7.772
answer: 5.884 and 7.772
When a negative number is subtracted from another number, the number will be added to the original. This means the equation will become -11 + 11 therefore the answer is 0
Answer:
20 L of 22% solution and 8 L of 36% solution
Step-by-step explanation:
Volume of 22% solution + volume of 36% solution = volume of 26% solution
x + y = 28
Acid in 22% solution + acid in 36% solution = acid in 26% solution
0.22x + 0.36y = 0.26(28)
0.22x + 0.36y = 7.28
Solve the system of equations using either elimination or substitution. I'll use substitution:
x = 28 − y
0.22(28 − y) + 0.36y = 7.28
6.16 − 0.22y + 0.36y = 7.28
0.14y = 1.12
y = 8
x = 28 − y
x = 20
The chemist should use 20 L of 22% solution and 8 L of 36% solution.
