Which of the following expressions could be equal to f(x)???

Mathematics

1 answer:

noname [10]2 years ago

4 0

If i understand the machine correctly and -3 is x and 8 is the final answer, f(x)=x+11

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Let W= { (x, y, z) |x=1|; y, z ∈ℝ } Prove that W is a subspace of ∈ℝ<br> How can I resolve this ?

Nataly [62]

Answer:

W is not a subspace.

Step-by-step explanation:

Notice that (-1,2,2) and (-1,5,3) are both elements of W. Because its x coordinate, x = -1, satisfy the condition |x| = 1.

but (-1,2,2) + (-1,5,3) = (-2,7,5) do not belongs to W. Because its first coordinate, x =-2, do not satisfy |x| = 1.

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2 years ago

the temperature at 3:00 pm was 35°F. The temperature had dropped 45 degrees by 9:00 pm. What was the tempeture in degrees fahren

Natali [406]

-10 degrees Fahrenheit
35-45=-10

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2 years ago

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Someone refresh me on constant of proportionality, forgot all about it!!!!

MAXImum [283]

A cycle, that is in the consideration of the earth and also help the combinations of things

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3 years ago

3 a plus b equals 54, when b equals 9?

Anton [14]

Answer:

3a+b= 54

3a+9=54

3a=54-9

3a=45

a=45/3

a= 15

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2 years ago

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A rock is thrown upward with an initial velocity of 16 ft/s from an initial height of 5 ft. How much time does it take for the r

Bogdan [553]

Check the picture below.

so it hits the ground when y = 0, thus

$\bf ~~~~~~\textit{initial velocity}\\\\
\begin{array}{llll}
~~~~~~\textit{in feet}\\\\
h(t) = -16t^2+v_ot+h_o
\end{array} 
\quad 
\begin{cases}
v_o=\stackrel{16}{\textit{initial velocity of the object}}\\\\
h_o=\stackrel{5}{\textit{initial height of the object}}\\\\
h=\stackrel{}{\textit{height of the object at "t" seconds}}
\end{cases}$

$\bf h(t)=-16t^2+16t+5\implies \stackrel{h(t)}{0}=-16t^2+16t+5
\\\\\\
16t^2-16t-5=0\implies (4t+1)(4t-5)=0\\\\
-------------------------------\\\\
4t+1=0\implies 4t=-1\implies t=-\cfrac{1}{4}\\\\
-------------------------------\\\\
4t-5=0\implies 4t=5\implies t=\cfrac{5}{4}\implies \boxed{t=1\frac{1}{4}}$

since "t" is seconds it took, it can't be a negative amount.

5 0

3 years ago