Answer:
72.1%
2
Step-by-step explanation:
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Answer: It's an algebraic expression
Step-by-step explanation: k²- 11 is an algebraic expression.
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Answer: 24
Step-by-step explanation:
Given : A metallurgist wants to study four different fluxes, two different base metals, and three different amounts of energy input.
i.e. 4 different choices for fluxes.
2 different choices for base metals.
3 different choices for amounts of energy input.
If each run of the experiment involves a choice of one flux, one base metal, and one amount of energy input.
Then , the number of runs are possible :-

Hence, there are 24 different runs are possible .
F(-1)=81+3e-.7(-1)
enter into scientific/ graphing calculator
f(-1)=89.85
3x+7-5x=8
-2x+7=8
-2x=1
X=-1/2
y=3(-1/2)+7
y=-1.5+7
y=5.5