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3 years ago

What is the difference between the predicted value and the actual value

Mathematics

1 answer:

snow_lady [41]3 years ago

3 0

It’s a prediction so basically an estimate of how much students he thought were going to be there. An actual number is the real total.

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X - 6 = 5x – 2<br> help

KiRa [710]

Answer:

-6+2=5x-x

-4=4x

-4/4=X

0=x

8 0

2 years ago

Peter's dad is 60, which is four times as old as peter. Write an equation that can be used to find peter's age. Then solve the e

MrRissso [65]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Situation:A researcher in North America discoversa fossile that contains 65% of its originalamount of C-14..-ktN=NoeNo inital am

zheka24 [161]

SOLUTION

We have been given the equation of the decay as

$\begin{gathered} N=N_0e^{-kt} \\ where\text{ } \\ N_0=initial\text{ amount of C-14 at time t} \\ N=amount\text{ of C-14 at time t = 65\% of N}_0=0.65N_0 \\ k=0.0001 \\ t=time\text{ in years = ?} \end{gathered}$

So we are looking for the time

Plugging the values into the equation, we have

$\begin{gathered} N=N_0e^{-kt} \\ 0.65N_0=N_0e^{-0.0001t} \\ e^{-0.0001t}=\frac{0.65N_0}{N_0} \\ e^{-0.0001t}=0.65 \end{gathered}$

Taking Ln of both sides, we have

$\begin{gathered} ln(e^{-0.000t})=ln(0.65) \\ -0.0001t=ln(0.65) \\ t=\frac{ln(0.65)}{-0.0001} \\ t=4307.82916 \end{gathered}$

Hence the answer is 4308 to the nearest year

8 0

4 months ago

238 +439 round you're answer to the. earest dollar

Paha777 [63]

Answer:

677

Step-by-step explanation:

238 + 439 = 677

It is t possible to round it form the ones (dollar) place.

8 0

3 years ago

If f (x) = StartRoot x minus 3 EndRoot, which inequality can be used to find the domain of f(x)?

Ann [662]

Answer:

$x\geq 3$ is the inequality to find the Domain of f(x)

Step-by-step explanation:

When we have a function where the variable "x" is inside a square root, we find its Domain by looking for all those values x for which the function is defined for the root, which means all the x-values that make the expression inside the root larger than or equal to zero, avoiding the values smaller for which the square root is not defined.

Therefore, in this case , for

$f(x)=\sqrt{x-3}$

we ask for the x-values that verify:

$x-3\geq 0\\x\geq 3$

where we have isolated x on one side of the equal sign.

This would be the definition of the Domain of the function.

4 0

2 years ago