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3 years ago

HELP PLEASE, GIVING ALOT OF POINTS! also step by step

Mathematics

2 answers:

levacccp [35]3 years ago

7 0

Given that : Tom bought total = 47 jigsaw puzzles.

Number of pieces in each puzzle = 70 pieces.

We need to find the number of pieces in all 47 jigsaw puzzles.

<em>In order to find the number of pieces in all 47 jigsaw puzzles, we need to multiply 47 jigsaw puzzles by 70 pieces each.</em>

We get

47 × 70 = 3290 pieces.

<h2>Therefore, Tom got total 3290 pieces all in 47 jigsaw puzzles.</h2>

Tamiku [17]3 years ago

7 0

Answer:

Therefore, Tom got total 3290 pieces all in 47 jigsaw puzzles.

Step-by-step explanation:

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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

Bella saw that 7 out of 11 people brought an umbrella to the beach. There were 99 people there. How many of them did NOT have a

Leokris [45]

That means that 4 out of 11 people did not have umbrellas
You can write this as a fraction so
4/11 = x/99
Then, multiply both sides by 99 to isolate the variable.
So x is going to equal 99 times 4 divided by 11, which is 36. That means 36 people did not have umbrellas.

8 0

3 years ago

Read 2 more answers

Simplify the expression:<br> 2(5 + 5q) =<br> What’s the answer

Serggg [28]

Answer:

10 + 10q

Step-by-step explanation:

2(5 + 5q) =

Distribute

2*5 + 2*5q

10 + 10q