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NeTakaya
3 years ago
12

Help pls. I have been stuck on this for 15 minutes now.​

Mathematics
2 answers:
Setler [38]3 years ago
7 0

Answer:

y= 0.35x+18.99

m= 0.35

18.99= 0.35(0)+b

18.99= 0+b

18.99=b

zlopas [31]3 years ago
6 0

Answer:

Y=0.35x+18.99

Step-by-step explanation:

Y = total cost

X = number of letters

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Question 12 (1 point) Given P(A) 0.34, P(A and B) 0.27, P(A or B) 0.44, what is P(B)? Answer in decimal form. Round to 2 decimal
Tema [17]

Answer:  The required probability of event B is P(B) = 0.37.

Step-by-step explanation:  For two events A and B, we are given the following probabilities :

P(A) = 0.34,    P(A ∩ B) = 0.27   and   P(A ∪ B) = 0.44.

We are to find the probability of event B, P(B) = ?

From the laws of probability, we have

P(A\cup B)=P(A)+P(B)-P(A\cap B)\\\\\Rightarrow 0.44=0.34+P(B)-0.27\\\\\Rightarrow 0.44=0.07+P(B)\\\\\Rightarrow P(B)=0.44-0.07\\\\\Rightarrow P(B)=0.37.

Thus, the required probability of event B is P(B) = 0.37.

6 0
3 years ago
The time to complete the construction of a soapbox derby car is normally distributed with a mean of three hours and a standard d
TEA [102]

Answer:

The probability that it would take more than four hours to construct a soapbox derby car = 0.1587 or 15.87\%

Step-by-step explanation:

Given -

Mean (\nu )  = 3 hours

Standard deviation (\sigma  ) = 1 hours

Let X be the no of hours to construct a soapbox derby car

the probability that it would take more than four hours to construct a soapbox derby car =

P(X > 4)  = P(\frac{X - \nu }{\sigma}> \frac{4 - 3 }{1})

                = P(Z > 1)                   Put (Z = \frac{X - \nu }{\sigma})

                 =  1 -  P(Z <  1)            

                 =  1 - .8413                    Using z table

                  = 0.1587

3 0
3 years ago
Lisa bought an outfit for<br> $37.67. What is $37.67<br> rounded to the nearest<br> whole number?
almond37 [142]

Answer:

Answer is 38

Step-by-step explanation:

if the first digit in the fractional part of 37.67 is less than 5 then you remove the fractional part to get the answer. If the first digit is 5 or above, then you add 1 to the integer and remove the fractional part to get the answer. First digit is 6 - it is 5 and above, you add 1 to the integer and remove fractional part and get 37.67 rounded to the nearest whole number as 38

Hope this helps

8 0
2 years ago
Read 2 more answers
A certain natural number is not divisible by 7. Can it be divisible by 14, explain why or why not
Elanso [62]
For a number to be divisible by 14 it needs to be both divisible by 7 and 2 which are factors of 14. Every time you have a number (x) to check if it is divisible by some larger number you find the factor of that larger number and check is the x divisible by both.

Answer: it cannot be divisible by 14.
3 0
3 years ago
I would really appreciate the help! 15 points!
Katyanochek1 [597]
The slope would be 1/17 and then you would use that slope and plug it into the y=mx+b and solve for b
4 0
3 years ago
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