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3 years ago

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Rebecca planted 5 rows of tomato plants. each row has 4 plants. she planted 4 rows of cabbage. each row has 3 plants. how many t

omatoes and cabbages did she plant.

1 answer:

Marizza181 [45]3 years ago

3 0

Step-by-step explanation:

5 rows of 4 tomato plants= 5×4= 20 tomato plants

4 rows of 3 cabbage plants= 4×3= 12 cabbage plants

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An urn contains 3 red and 7 black balls. Players A and B take turns (A goes first) withdrawing balls from the urn consecutively.

andrey2020 [161]

Answer:

The probability that A selects the first red ball is 0.5833.

Step-by-step explanation:

Given : An urn contains 3 red and 7 black balls. Players A and B take turns (A goes first) withdrawing balls from the urn consecutively.

To find : What is the probability that A selects the first red ball?

Solution :

A wins if the first red ball is drawn 1st,3rd,5th or 7th.

A red ball drawn first, there are $E(1)= ^9C_2$ places in which the other 2 red balls can be placed.

A red ball drawn third, there are $E(3)= ^7C_2$ places in which the other 2 red balls can be placed.

A red ball drawn fifth, there are $E(5)= ^5C_2$ places in which the other 2 red balls can be placed.

A red ball drawn seventh, there are $E(7)= ^3C_2$ places in which the other 2 red balls can be placed.

The total number of total event is $S= ^{10}C_3$

The probability that A selects the first red ball is

$P(A \text{wins})=\frac{(^9C_2)+(^7C_2)+(^5C_2)+(^3C_2)}{^{10}C_3}$

$P(A \text{wins})=\frac{36+21+10+3}{120}$

$P(A \text{wins})=\frac{70}{120}$

$P(A \text{wins})=0.5833$

6 0

3 years ago

What is the square root of 55

nikitadnepr [17]

$\sqrt{55 } = 7.41.....$
It is non recurring number

Hope it helps you

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3 years ago

You owe your sister $5.35, and she lends you another $4.50, how much do you owe her now

Margarita [4]

You would now have to pay her $9.85

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3 years ago

2/3 + 1/2 <br> i just want to give some points away

goldfiish [28.3K]

Answer: 7/6, 1 and 1/6, or 1.16

Step by step explanation:

2/3 + 1/2

4+3/6

7/6

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2 years ago

Read 2 more answers

How do you solve ??<br> 5x^4( 6x^4-3x^2 +7)

melamori03 [73]

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3 years ago