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spin [16.1K]
3 years ago
12

HELP ASAP!!

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
7 0

Answer:

The answer for -7x + 8 - 4x - 9 is 1. -11x-1

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The Transportation Safety Authority (TSA) has developed a new test to detect large amounts of liquid in luggage bags.
Ivan

Answer and Step-by-step explanation:

First of all lets define  

X to be that the bags do contain large liquid amounts

+ to be that the test is not negative that is positive

From the question,  

P(x) = 3/100 = 0.03

P(+|X) = 0.91

P(+|X′) = 0.05

Probability of bag having a positive test =p(+)

= P(+|X) (P(x)) + P(+|X′)(P(X′))

= P(X′)) = 1 – 0.03 = 0.97

Inserting these values into these formulas  

0.91)(0,03) + (0.05)(0.97)

= 0.0273 + 0.0485

= 0.0758

The probability of the randomly selected bag having large liqid amount

=  P(X|+) = (0.91*0.03)/(0.91*0.03)(0.05*0.97)

= 0.0273/0.0273+0.0485

= 0.0273/0.0758

= 0.3602

the probability that this bag does not have large liquid amount

= p(X'|+) = 1 - P(X|+)

= 1 - 0.3602

= 0.6398

6 0
3 years ago
Find the perimeter of the figure to the nearest hundredth.
Alenkinab [10]

Answer: 48.84

Step-by-step explanation:

First, find the perimeter of the rectangle. 12+12+3+3=30ft. Next, find the perimeter of the semicircles. You can tell that if you put the semicircles together it would be a full circle. The formula for the perimeter of a circle is r2pi. The radius times 2 would be 6. Pi is approximately 3.14. 6 times 3.14 is 18.84. 18.84+30=48.84ft. Hope this helped :)

4 0
3 years ago
Read 2 more answers
Writing in Slope-Intercept Form, 4 Ways <br><br> (3, 2) &amp; (-3, -4)
andre [41]

Answer:

y = x +1

Step-by-step explanation:

y= mx + b

where m is the slope and b is the y-intercept

m = (y2-y1)/ (x2-x1) = 2+4 / 3+3 = 6/6 = 1

from the point -slope equation we have

y-y1 = m* (x-x1)

y-3 = 1* ( x-2)

y= x -2+3

y= x +1

so the slope m=1 and the y-intercept b=1

3 0
3 years ago
JUST HELP ME ITS DUE IN5 MINUTES:"( ASAP &lt;3
Citrus2011 [14]

Answer:

A. 25%

25% is equivalent to 1/4 and when you multiply 75 by 4 you get 300. Which means 75 is equivalent to 1/4 and 1/4 is equivalent to 25%. So the answer is 25%. I'm so sorry if this explanation is bad

5 0
2 years ago
the parabola y=x^2 is shifted up by 2 units and to the right by 3 units. what is the equation of the new porabola
Juli2301 [7.4K]
Up 2 units = y shifted up by 2:
y = x^2 + 2
to the right 3 units = x shifted right (+) by 3:
y + 3 = x^2 +2
new equation:
y = x^2 - 1
6 0
2 years ago
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