What is f (0) for the function f (a) = 2a + 3

Mathematics

2 answers:

vovangra [49]3 years ago

3 0

F(0)= 2* 0 +3

=0+3
f(0)=3

Nikolay [14]3 years ago

3 0

Answer:

Step-by-step explanation:

$f (a) = 2a + 3\\\\f(0)=?$

Substitute 0 for a in the given equation

$f(0) = 2(0)+3\\\\f(0) = 0+3\\\\f(0) =3$

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A chef is going to use a mixture of two brands of Italian dressing. The first brand contains 9% vinegar, and the second brand co

kobusy [5.1K]

So, the first brand has 9% vinegar, and say we use "x" amount of it, then, the amount of vinegar in "x" is 9% of x, or (9/100) * x, 0.09x.

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$\bf \begin{array}{lccclll}
&\stackrel{mL}{amount}&\stackrel{\%}{concentration}&\stackrel{amount}{concentration}\\
&------&------&------\\
\textit{first brand}&x&0.09&0.09x\\
\textit{second brand}&y&0.14&0.14y\\
------&------&------&------\\
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so, whatever "x" and "y" are, we know that x + y = 230.

and we also know that their concentration amounts will also add up, 0.09x + 0.14y = 29.9.

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x+y=230\implies \boxed{y}=230-x\\
0.09x+0.14y=29.9\\
----------\\
0.09x+0.14\left(\boxed{230-x} \right)=29.9
\end{cases}
\\\\\\
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\\\\\\
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how many milliliters will it be for the second brand? well, y = 230 - x.

3 0

3 years ago

Please help, thank you.

Gnoma [55]

Lets x = radius
x^2 + 10^2 = (x+8)^2
x^2 + 100 = x^2 + 16x + 64
16x = 100 - 64
16x = 36
x = 2.25

answer
B. 2.25

8 0

3 years ago

1.Simplify 5 to the 5th over 5 to the 8th.

timurjin [86]

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