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Mrac [35]
3 years ago
8

Please help fast!!!!! 20 points

Mathematics
2 answers:
adoni [48]3 years ago
5 0
B I am guessing I not that good that math
FromTheMoon [43]3 years ago
4 0

Answer:

I think the answer is B.7070-(-7460)

I'm sorry if it was wrong..

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4. A parking lot contains 21 sedans. Sedans are found at a ratio of 7:5 to SUVs in the parking lot. How many
Mice21 [21]

Answer:

they are both divisible by 3

7 x 3 = 21

5 x 3 = 15

Step-by-step explanation:

hope this helps lucas (mr. calvelo)

6 0
3 years ago
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
3 years ago
30 + 18 = 6(5 + ___)
Mumz [18]
48=6(5+3)
48=6(8)
48=48
3 0
2 years ago
Read 2 more answers
A variable needs to be eliminated to solve the system of equations below. Choose the correct first step. - 9x + 107=-126 — 9x —
Svetach [21]

Answer:

fbi open up hujuiiiiii>hhhhh

4 0
2 years ago
How much pure water must be mixed with 10 liters of a 25% acid solution to reduce it to a 10% acid solution?
Alex73 [517]
The solution is 25% acid, which means 2.5 liters acid (10 x .25). 
<span>you need that 2.5 liters to be 10%, or 1/10th the total. </span>
<span>the total would have to be 25 liters (2.5 x 10) so when you add to 10 to get 25 you get </span><span>15 liters. Hope I helped!</span>
3 0
3 years ago
Read 2 more answers
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