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katrin [286]
3 years ago
5

At noon, a tank contained 10cm of water. After several hours, it contained 7cm of water. What is the percent decrease of water i

n the tank?
Mathematics
1 answer:
Aloiza [94]3 years ago
3 0
30 percentage decrease, if you need me to explain I’ll be glad to help
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Please help like right now ABC = RSO<br> Find m
Alja [10]

Answer:

50⁰

Step-by-step explanation:

the 2 triangles are congruent, meaning the angles equal the same. angles B and S are the same, angles A and R are the same, and angles Q and C are the same (congruent)

6 0
3 years ago
Customers arrive at a restaurant according to a Poisson distribution at a rate of 20 customers per hour. The restaurant opens fo
jenyasd209 [6]

Answer:

0.087

Step-by-step explanation:

Given that there were 17 customers at 11:07, probability of having 20 customers in the restaurant at 11:12 am could be computed as:

= Probability of having 3 customers in that 5 minute period. For every minute period, the number of customers coming can be modeled as:

X₅ ~ Poisson (20 (5/60))

X₅ ~ Poisson (1.6667)

Formula for computing probabilities for Poisson is as follows:

P (X=ₓ) = ((<em>e</em>^(-λ)) λˣ)/ₓ!

P(X₅= 3) = ((<em>e</em>^(-λ)) λˣ)/ₓ! =  (e^-1.6667)((1.6667²)/3!)

P(X₅= 3) = (2.718^(-1.6667))((2.78)/6)

P(X₅= 3) = (2.718^(-1.6667))0.46

P(X₅= 3) = 0.1889×0.46

P(X₅= 3) = 0.086894

P(X₅= 3) = 0.087

Therefore, the probability of having 20 customers in the restaurant at 11:12 am given that there were 17 customers at 11:07 am is 0.087.

8 0
4 years ago
I need help! I have test tomorrow and I got sick so I couldn’t go to school and I’m lost
Elan Coil [88]
Well 6x8 = 48 so 8 touchdowns is 48 points
7 0
3 years ago
Graph the image of the figure using the transformation given. (across y=-x)
lana [24]

Answer:

The answer is B because if you take the line of y=-x (which you can look up on desmos if you don't know what y=-x looks like) and reflect over that line you can see that when the dot reflects over the line y=-x it goes to points (0,2)

Step-by-step explanation:

8 0
3 years ago
Solve the system of equations graphicallySolution=?
BigorU [14]

The given system is

\begin{cases}y=\frac{5}{2}x-8 \\ y=-\frac{1}{2}x-2\end{cases}

Given that y = y, let's combine the equations

\frac{5}{2}x-8=-\frac{1}{2}x-2

Let's solve for x

\begin{gathered} \frac{5}{2}x+\frac{1}{2}x=8-2 \\ \frac{6}{2}x=6 \\ 3x=6 \\ x=\frac{6}{3} \\ x=2 \end{gathered}

Then, we find y

y=-\frac{1}{2}x-2=-\frac{1}{2}\cdot2-2=-1-2=-3

The solution is (2, -3).

The image below shows the solution graphically.

3 0
1 year ago
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