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Afina-wow [57]
4 years ago
13

A family has three children. Using b to stand for a boy and g for girl give the following.(To indicate that the first child is a

boy, the second child is a boy, and the third child is a girl enter bbg. Enter your answers as a comma-separated list.). Let the event E that the family has exactly two boys.
a) Find the probability p(E)
b) Find the odd o(E) Part a): [Select ] Part b): ISelect ) ?
Mathematics
1 answer:
zubka84 [21]4 years ago
6 0

Answer:

3/8 and 3/5

Step-by-step explanation:

Given that a family has three children. Using b to stand for a boy and g for girl give the following we can write sample space for a family having three children as

(bbb, bbg, bgg, bgb, gbb, gbg, ggb, ggg)

E - exactly two boys

Sample space count = 8

Exactly two boys count = 3

a) p(E) = \frac{3}{8}

b) odds for E is probability/1-probability

= \frac{3}{5}

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A child is hopping along a sidewalk. The ratio below shows the comparison between the number of hops and the distance traveled.
blagie [28]

Answer:

Find the ratio of hops to distance traveled (1: 1.5), then multiply 150 by 1.5.

Step-by-step explanation:

A child is hopping along a sidewalk. The ratio table below shows the comparison between the number of hops and the distance traveled. Hopping Number of hops Distance traveled (ft) 20 30 50 75 80 120 150 ?

Which statement correctly explains how to find the distance traveled after 150 hops? Subtract 120 – 75 to get 45, then add that number to 120. Add 30 + 75 + 120. Find the ratio of hops to distance traveled (1:1.5), then multiply 150 by 1.5. Find the ratio of hops to distance traveled (1:1.5), then divide 150 by 1.5.

Solution:

The table is:

No. of hops Distance traveled

20 30

50 75

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From the table, for every 30 increase in the number of hops, the distance travelled increase by 45 feet

Find the slope of the line:

m = (y2-y1) / (x2-x1)

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y2-y1 = change in distance travelled

x-2 - x1 = Change in number of hops

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m = (75-30) / (50-20)

=45 / 30

m = 1.5

Then, the line is:

y = 1.5x

We substitute x = 150

y = 1.5x

y = 1.5 × 150

y = 225

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Step-by-step explanation:

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