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ValentinkaMS [17]
3 years ago
12

23. solve for x: -5=45

Mathematics
1 answer:
yuradex [85]3 years ago
3 0
That's the answer for no 23

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A swimming pool is being drained so it can be cleaned. The amount of water in the pool is changing according to the función f(t)
TiliK225 [7]

Answer:

0 ≤ t ≤ 5.

Step-by-step explanation:

In the function f(t), t is the independent variable. The domain of f is the set of all values of t that this function can accept.

In this case, f(t) is defined in a real-life context. Hence, consider the real-life constraints on the two variables. Both time and volume should be non-negative. In other words,

  • t \ge 0.
  • f(t) \ge 0.

The first condition is an inequality about t, which is indeed the independent variable.

However, the second condition is about f, the dependent variable of this function. It has to be rewritten as a condition about t.

\begin{aligned} f(t) &\ge 0 &&\text{Assumption} \cr 80000 - 16000\, t& \ge 0 && \text{Definition of} ~ f \cr 80000 & \ge 16000\, t && \begin{aligned}&\text{Add $16000\, t$} \\[-0.5em] & \text{to both sides of the inequality}\end{aligned} \cr 5 &\ge t &&\begin{aligned}&\text{Divide both sides of} \\[-0.5em] & \text{the inequality by $16000$}\end{aligned} \cr t &\le 5 && \text{Flip the inequality}\end{aligned}.

Hence, t ≤ 5.

Combine the two inequalities to obtain the domain:

0 ≤ t ≤ 5.

6 0
2 years ago
In the equation y=-2x + 3, if x = 7, what does y equal
Ahat [919]

Answer:

-11

Step-by-step explanation:

-14+3=-11

7 0
3 years ago
1 pt The largest exponent of a polynomial determines the _________. Cubic Linear Exponent Degree
Y_Kistochka [10]

Answer: 3



Step-by-step explanation:


5 0
3 years ago
Pls help or your mom will kidnap you
andrey2020 [161]
I think it is option 1 sorry if wrong
3 0
2 years ago
Read 2 more answers
Solve the equation e/3 = 7 e= (answer)
Bond [772]

Answer:

21

Step-by-step explanation:

e/3 = 7 you can rewrite as e/3 = 7/1 and cross multiply e*1 = 3*7 so e= 21

5 0
2 years ago
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