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2 years ago

What’s the Question? Selena ran farther than Manny.

Mathematics

1 answer:

lara31 [8.8K]2 years ago

5 0

If Selena ran x miles and manny ran y miles, who ran more miles

x=any number

y=any number smaller than x

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Graphing standard form inequalities help plz

Art [367]

Answer:

The axis of symmetry

The x-value of the vertex

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2 years ago

1 and 2 thirds + 1 and a half ?

Rina8888 [55]

Answer:

1 2/3 + 1 1/2

Step-by-step explanation:

3 1/6

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2 years ago

Read 2 more answers

For the equation W = -175t + 8,750, how much water is left after 6 hours?

barxatty [35]

Answer:

7,700

Step-by-step explanation:

-175 x 6 = -1,050

-1,050 + 8,750 = 7,700

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3 years ago

If y=e5t is a solution to the differential equation

a_sh-v [17]

Answer:

k = 30, $y(t) = C_1e^{5t}+C_2e^{6t}$

Step-by-step explanation:

Since $y=e^{5t}$ is a solution, then it must satisfy the differential equation. So, we calculate the derivatives and replace the value in the equation. We have that

$\frac{d^2y}{dt^2} = 25 e^{5t},\frac{dy}{dt} = 5e^{5t}$

Then, replacing the derivatives in the equation we have:

$25e^{5t}-11(5)e^{5t}+ke^{5t}=0 e^{5t}(25-55+k) =0$

Since $e^{5t}$ is a positive function, we have that

$25-55+k = 0 \rightarrow k = 30$ .

Now, consider a general solution $y(t) = Ae^{rt}, A \in \mathbb{R}$ , then, by calculating the derivatives and replacing them in the equation, we get

$Ae^{rt}(r^2-11r+30)=0$

We already know that r=5 is a solution of the equation, then we can divide the polynomial by the factor (r-5) to the get the other solution. If we do so, we get that (r-6)=0. So the other solution is r=6.

Therefore, the general solution is

$y(t) = C_1e^{5t}+C_2e^{6t}$

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3 years ago

Find the equation of the vertical line through (7,-3)

wlad13 [49]

X = 7
Is a vertical line that passes through (7,-3).

4 0

3 years ago