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4 years ago

8

Find the value of the variable using the given secant. Show your work.

1 answer:

storchak [24]4 years ago

8 0

Answer:

x=3.5

Step-by-step explanation:

x×6=3×7

x=21/6=7/2=3.5

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A jar contains two blue and five green marbles. A marble is drawn at random and then replaced. A second marble drawn at random.

DerKrebs [107]

corrected question:A jar contains two blue and five green marbles. A marble is drawn at random and then replaced. A second marble drawn at random. For each of the following, find the probability that: a) both marbles are blue b) both marbles are the same color c)the marbles are different in color

Answer:

Step-by-step explanation:

<u><em>The probability was done with replacement.</em></u>

Probaility of an event happening $=\frac{number of required outcomes}{number of possible outcomes}$

number of blue marbles= 2

number of green marbles=5

total number of marbles=7

(a) probability that both marbles are blue = pr(first is blue)*pr(second is blue)

$=\frac{2}{7}*\frac{2}{7}$

$=\frac{4}{49}$

(b)probability that both marbles are the same color =pr(first is blue)*pr(second is blue) + Pr(first is green)*Pr(second is green)

$=\frac{4}{49} + \frac{5}{7}*\frac{5}{7}$

$=\frac{4}{49} + \frac{25}{49}$

$=\frac{29}{49}$

(c)Probability that the marbles are different in colors=pr(first is blue)*pr(second is green) + Pr(first is green)*Pr(second is blue)

$=\frac{2}{7}*\frac{5}{7}+ \frac{5}{7}*\frac{2}{7}$

$=\frac{10}{49}+\frac{10}{49}$

$=\frac{20}{49}$

6 0

3 years ago

First, rewrite 16//21 and 7/9 so that they have a common denominator.

notka56 [123]

Answer:

Step-by-step explanation:

8 0

3 years ago

this is the call plan for minna's cell phone $15 a month plus $0.20 per minute of call time. Minna made 30 minutes of calls this

Ainat [17]

Answer:

To solve this you would do the following:

We know her plan is $15/monthly, regardless of any additional texts/calls she makes.

If 1 minute = $.20 worth of money, we would simply multiply 30 (she made 30 minutes worth of calls) x $.20 ($.20 for each minute). The product is $6.

So, $15 + $6 = $21.

Unless the amount owed per text is mentioned and you forgot to include it in the title, you would not need to take this into consideration.

6 0

3 years ago

In order to estimated number of monkeys living in a certain rainforest Brenda catch a 64 monkeys marks them and releases them la

Brums [2.3K]

Answer:

1600 monkeys

Step-by-step explanation:

if you multiply the 950 monkeys with the 38 marked, you have 1900 monkeys and 76 marked, so if you make some estimation, the nearest is 1600 monkeys.

brainliest please ;)

8 0

4 years ago

− 11/12 + p = 1/6<br><br><br> what does p =

Leno4ka [110]

Answer:

13/12

Step-by-step explanation:

p=1/6+11/12=(2+11)/12=13/12

3 0

3 years ago

Read 2 more answers