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laila [671]
3 years ago
15

Monique collects data from a random sample of seventh graders in her school and finds that 8 out of 20 seventh graders participa

te in​ after-school activities. Write and solve a proportion to estimate the number of seventh graders n who participate in​ after-school activities if 110 seventh graders attend​ Monique's school.
Mathematics
1 answer:
ololo11 [35]3 years ago
7 0

Answer:

69

Step-by-step explanation:

69

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An assembly line has two inspectors. The probability that the first inspector will miss a defective item is 0.06. If the defecti
Novay_Z [31]

Answer:

probability that both passes a defective item is  0.8742‬

<h3>Step-by-step explanation:</h3>

probability that the first inspector misses is Pr( 1st misses)= 0.06

therefore the probability he does not miss is

Pr(1st passes)= 1 - Pr( 1st misses) = 1 - 0.06 = 0.94

probability that the second misses is Pr( 2nd misses) = 0.07

therefore probability that 2nd does not miss is

Pr( 2nd passes) = 1- Pr( 2nd misses) = 0.93

probability that both passes a defective item is  Pr(1st passes)*Pr( 2nd passes)

= 0.93*0.94 = 0.8742‬

7 0
3 years ago
Show that angle a+ angle b is equal to angle d​
mr_godi [17]

sum of two angles of triangle are equal to the exterior angle of triangle

8 0
3 years ago
Read 2 more answers
A population of 60 rabbits increases by 25% each year for 8 years. Find the population the end of each year
MrRa [10]

Answer & Step-by-step explanation:

It increased by 10 each year

Year 1 of 8: 70

Year 2 of 8: 80

Year 3 of 8: 90

Year 4 of 8: 100

Year 5 of 8: 110

Year 6 of 8: 120

Year 7 of 8: 130

Year 8 of 8 (Final Year): 140

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<u><em>Hope this helps!!! :)</em></u>

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Read 2 more answers
Factor the expression completely.<br> -50x^2 +45
stich3 [128]

Answer:

Step-by-step explanation:

-5(10x^2 - 9)

8 0
3 years ago
write an equation of a line that passes through the following tow points (4, -6) and (2, 8) show work
stiks02 [169]

Answer:

y = -7x + 22

Step-by-step explanation:

Given

(x_1,y_1) = (4,-6)

(x_2,y_2) = (2,8)

Required

Determine the line equation

This question will be answered using linear interpolation.

This is represented as thus:

\frac{y - y_1}{x - x_1} = \frac{y_2 - y_1}{x_2 - x_1}

Substitute values for x1,x2,y1 and y2

\frac{y - (-6)}{x - 4} = \frac{8 - (-6)}{2 - 4}

\frac{y +6}{x - 4} = \frac{8 +6}{2 - 4}

\frac{y +6}{x - 4} = \frac{14}{-2}

\frac{y +6}{x - 4} =-7

Cross Multiply

y + 6 = -7(x - 4)

y + 6 = -7x + 28

Make y the subject

y = -7x + 28-6

y = -7x + 22

7 0
3 years ago
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