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GarryVolchara [31]
3 years ago
5

I dunno if u can see the questions but I need help in questions 3 and 4. Can I have a step by step with that as well please? Tha

nks

Mathematics
2 answers:
Hatshy [7]3 years ago
7 0
3). 14* 6 = 84 books
4). 3*30 = £90 ( 90 pounds)
Kruka [31]3 years ago
3 0

Answer:

#3: 84 books

#4: 90 pounds

Step-by-step explanation:

#3: 14*6= 84

#4: 30*3= 90

Hope this helps!!

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2. Water is leaking from a faucet at a constant rate of 1/3 gallon per minute.
Cloud [144]

Answer:

W = \frac{1}{3}t

20 gallons of water is leaked after an hour.

Step-by-step explanation:

Water is leaking at a constant rate of 1/3 gallon per minute.

a) We have to write a linear equation in two variables that show the amount of water, w, in gallons, that is leaked from the faucet after t minutes.

So, the equation is W = \frac{1}{3}t ......... (1) (Answer)

b) Now, if t = 1 hour i.e. 60 minutes, then from equation (1) we can write

W = \frac{1}{3}\times 60 = 20 gallons.

Therefore, 20 gallons of water is leaked after an hour. (Answer)

5 0
3 years ago
HELP PLEASE
Gnesinka [82]

Answer: x^2=8y


Step-by-step explanation:

Let the given parabolic mirror opens upwards and vertex=(0,0)

Focus point of the parabolic mirror is located 2 inches from the vertex of the mirror.  ∴ p=2

Since, the parabola opens upward, then the equation of the parabola is of the form x^2=4py

Substitute the value of p=2 in this, we get the equation of the parabolic mirror

x^2=4(2)y\\\Rightarrow\ x^2=8y

Hence, the equation of the parabola that models the cross section of the mirror is x^2=8y

7 0
3 years ago
Read 2 more answers
Children arrive at a house to do Halloween trick-or- treating according to a Poisson process at the unlucky rate of 13/hour. Wha
Art [367]

Answer:

0.4204 probability, option b.

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

f(x) = \mu e^{-\mu x}

In which \mu = \frac{1}{m} is the decay parameter.

The probability that x is lower or equal to a is given by:

P(X \leq x) = \int\limits^a_0 {f(x)} \, dx

Which has the following solution:

P(X \leq x) = 1 - e^{-\mu x}

The probability of finding a value higher than x is:

P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}

Children arrive at a house to do Halloween trick-or- treating according to a Poisson process at the unlucky rate of 13/hour

13 arrivals during an hour, which means that the mean time between arrivals, in minutes is of \mu = \frac{13}{60} = 0.2167

What is the probability that the time between the 15th and 16th arrivals will be more than 4 minutes ?

This is P(X > 4). So

P(X > 4) = e^{-0.2167*4} = 0.4204

So the correct answer is given by option b.

3 0
2 years ago
I know I already asked this, but I forgot to mention this.<br><br> m over + m when m equals -6
snow_lady [41]
Hello there!

m/2

-6/2

-6/2 = -3

Your answer is -3


Hope I helped!

Let me know if you need anything else!

~ Zoe



6 0
3 years ago
Read 2 more answers
Estimate using compatible numbers. Show the numbers used. 1286÷ 32
Sindrei [870]

Answer:

41 big boy thats ur answer

Step-by-step explanation:

7 0
3 years ago
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