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IgorLugansk [536]
3 years ago
6

P and q are the zeroes of the polynomial 2x^2+5x-1, find the value of p+q+pq

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
5 0

Answer:

  1. Sorry I didn't get your text
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A distribution has a mean of 90 and a standard deviation of 15. Samples of size 25 are drawn randomly from the population. Find
raketka [301]

Answer:

The probability is 0.04746

Step-by-step explanation:

Firstly, we calculate the z-score here

Mathematically;

z-score = x-mean/SD/√n

Where from the question;

x = 85, mean = 90 , SD = 15 and n = 25

Plugging these values into the equation, we have;

Z = (85-90)/15/√25 = -5/15/5 = -1.67

So the probability we want to calculate is ;

P(z > -1.67)

We use the standard normal distribution table for this;

P(z > -1.67) = 0.04746

4 0
3 years ago
Write three hundred eighty-seven thousandths as a decimal number.<br>​
Valentin [98]

Answer:

0.387

Step-by-step explanation:

3 0
3 years ago
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Give answer for this question ❓​
rjkz [21]

Answer:

A. True

B. False

Step-by-step explanation:

B is false because rational numbers have either repeating decimals or numbers that come to an end.

7 0
3 years ago
If 1 16 oz can cost. $1 how much is 8 40oz cans
Studentka2010 [4]

Answer:

8 I think

Step-by-step explanation:

I did 40÷16=2.5 then 2.5×8=20

3 0
3 years ago
The dimensions of a rectangle are 20' by 40'. If a model rectangle with a scale of 5' = 10'' is to be made, find the dimensions
VMariaS [17]

20’ / 5’ = 4

4 x 10” = 40”

40’ /5’ = 8

8 x 10” = 80”

Scaled dimension: 40” x 80”

6 0
3 years ago
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