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yan [13]
4 years ago
15

{ y=x^2-2x-6 y=4x+10

Mathematics
1 answer:
AlekseyPX4 years ago
7 0
Hello : 
here is a solution 

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(3/4)^-1(1/2)^2(3/5)^3
Oliga [24]

Answer:

9/125 or 0.072

Step-by-step explanation:

have a good day :)

5 0
3 years ago
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Greg’s family went to the movie theater and bought tickets and popcorn. They spent $35 altogether with $9.50 spent on popcorn. W
user100 [1]
Well I got

x = 35 - 9.50
4 0
3 years ago
PLEASE HELP ME
Karolina [17]

Answer:

I think it is A. an angle bisector

Step-by-step explanation:

4 0
3 years ago
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A company manufactures 2,000 units of its flagship product in a day. The quality control department takes a random sample of 40
shepuryov [24]

Answer:

B

Step-by-step explanation:

The recommended sample size n for point estimates is:

n = NX / (N + X - 1)

where N is the population size, and X is defined as:

X = Z² p (1 - p) / E²

where Z is the critical value, p is the sample proportion, and E is the margin of error.

Assume a confidence level of level of 95% and a margin of error of 5%.

α = 0.05, Z(α/2) = 1.96

E = 0.05

Of the 40 units tested, 2 had lifespans less than 26 days.  So the proportion is:

p = 2/40 = 0.05

Therefore:

X = (1.96)² (0.05) (1 - 0.05) / (0.05)²

X = 73

Given N = 2000:

n = (2000) (73) / (2000 + 73 - 1)

n = 70.45

Rounding, the recommended sample size is 70.

5 0
4 years ago
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Wires manufactured for use in a computer system are specified to have resistances between 0.14 and 0.16 ohms. The actual measure
kodGreya [7K]

Answer:

Hence the probability that a randomly selected wire from company A's production will meet the specifications is 0.95455.

Step-by-step explanation:

a)P(0.14 < x < 0.16 ) = P[(0.14 - 0.15)/ 0.005) < (x - \mu) /\sigma  < (0.16 - 0.15) / 0.005) ]

=P(0.14 < x < 0.16 ) = P[(0.14 - 0.15)/ 0.005)< ((x - 0.15) /0.005) < (0.16 - 0.15) / 0.005) ]

=P(z  

Using z table,  

= 0.9773 - 0.02275  

= 0.95455.

5 0
3 years ago
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