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Nezavi [6.7K]
4 years ago
11

Show the working for 32.2x62.1

Mathematics
1 answer:
Margaret [11]4 years ago
8 0
32.2 x 62.1=1999.62 i cant show my work but i know the ans
 
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Anyone know the answer ?? Please, appreciate it
hodyreva [135]

Answer:

D

Step-by-step explanation:

4 0
3 years ago
An article in Fire Technology, 2014 (50.3) studied the effectiveness of sprinklers in fire control by the number of sprinklers t
gregori [183]

Answer:

probability that all of the sprinklers will operate correctly in a fire: 0.0282

Step-by-step explanation:

In order to solve this question we will use Binomial  probability distribution because:

  • In the question it is given that the sprinklers activate correctly or not independently.
  • The number of outcomes are two i.e. sprinklers activate correctly or not.

A binomial distribution is a probability of a success or failures outcomes in an  repeated multiple or n times.

Number of outcomes of this distributions are two.

The formula is:

b(x; n, P) = C_{n,x}*p^{x}  * (1 - p)^{n-x}

b = binomial probability  also represented as P(X=x)

x =no of successes

P = probability of a success on a single trial

n = no of trials

C_{n,x} is calculated as:

C_{n,x} = n! / x!(n – x)!

        = 10!  / 10!(10-10)!

        = 1

According to given question:

probability of success i.e. p = 0.7 i.e. probability of a sprinkler to activate correctly.

number of trials i.e. n = 10 as number of sprinklers are 10

To find: probability that all of the sprinklers will operate correctly in a fire

X = 10 because we have to find the probability that "all" of the sprinklers will operate correctly and there are 10 sprinklers so all 10 of them

So putting these into the formula:

P(X=x) = C_{n,x}*p^{x}  * (1 - p)^{n-x}

           = C₁₀,₁₀ * 0.7¹⁰ * (1-0.7)¹⁰⁻¹⁰

           =  1 * 0.0282 * (0.3) ⁰

           = 1 * 0.0282 * 1

  P(X=x)        = 0.0282

5 0
3 years ago
If the gradient of the line joining the points (-3,-7) and (4,p) is 3/5, find the value of P.
adelina 88 [10]

Given:

Two points (-3, -7) and (4, p).

To find the value of P if the gradient is 3/5:

The gradient in a linear equation is the same thing as the slope of the line.

So, the formula is,

\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ \frac{3}{5}=\frac{p-(-7)}{4-(-3)} \\ \frac{3}{5}=\frac{p+7}{7}\Rightarrow3(7)=5(p+7) \\ 21=5p+35 \\ 5p=21-35 \\ 5p=-14 \\ p=-2.8 \end{gathered}

Hence, the value of p is -2.8.

4 0
1 year ago
You are training for a marathon. On the first three days of training, your run for 2,4, and 5 miles. How many miles should you r
jasenka [17]
The answer would have to be like the same as the first day, so that being said you would have to add. I think the answer is 2,2,4. hope this helps.

3 0
3 years ago
Bill wants to rent a car. Rental company a charges $35 per day plus $.10 per mile driven. Rental company B charges $25 per day p
svp [43]
According to my calculations, after 200 miles, the prices will be equal.
5 0
3 years ago
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