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2 years ago

A sample of juniors and seniors were asked if they plan to attend college.

Mathematics

1 answer:

maksim [4K]2 years ago

3 0

Answer:

From the survey, the following apply to both Junior and Seniors who were asked about their plan towards attending college:

C. Given the student plans to attend college, the probability the student is a junior is 68%.

D. Given the student is a junior, the probability the student plans to attend college is 68%.

F. Events "is a senior" and "plans to attend" are independent.

B. The probability the student plans to attend college is 70%.

Step-by-step explanation:

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2 planes left a airport at noon 1 flew east and the other flew west as twice the speed after 3 hours the planes were 2700 miles

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Speed =distance ÷time
?=2700÷3
?=900 miles per hour

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3 years ago

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There are 30 students in a classroom. The ratio of boys to girls is 2:3.

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<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Split 30 into the ratio 2 : 3

12 : 18

12 / 18 + x = 1/5

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3 years ago

Ten times the sum of half a number and 6 is 8

Genrish500 [490]

" · " - times

" + " - sum

n - a number

0.5n - half a number

10 · (0.5n + 6) = 8 |use distributive property

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3 years ago

Sid starts with savings of £13

vfiekz [6]

Answer:

after 6 weeks

Step-by-step explanation:

Sid and Tim starts saving each week.

Sid starts his savings with initial amount of £13.00

Tim starts his saving with initial amount of £00.00

Each week from now Sid will save = £3.50

Tim will save each week = £3.00

Let's assume after 'x' weeks the amount of Sid would be = £ (13 + 3.50x)

and the amount of Tim's saving after x weeks = £ (3x)

The ratio of their savings in x weeks would be = 17 : 9

Now the expression we get,

(13 + 3.50x) : (3x) = 17 : 9

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9(13 + 3.50x) = 17(3x)

117 + 31.5x = 51x

117 = 51x - 31.5x

117 = 19.5x

$x=\frac{117}{19.5}$

x = 6

After 6 weeks the savings of Tim and Sid would be in the ratio of 17 : 9.

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3 years ago

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