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Mathematics

1 answer:

ELEN [110]3 years ago

6 0

Answer:

47/200

Step-by-step explanation:

to find experimental probability you have to find the number of times the desired outcome has happened the divide it by the total times the action has been performed. 19+13+15=47/200

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Simplify the answer

Andru [333]

Answer:

- 20 + 8i

Step-by-step explanation:

Noting that i² = - 1

Given

[(6i + 9) + (4i - 5)] × 2i ← evaluate the terms inside the square bracket

= ( 6i + 9 + 4i - 5 ) × 2i

= (10i + 4) × 2i ← multiply each term in the parenthesis by 2i

= 20i² + 8i

= 20(- 1) + 8i

= - 20 + 8i

8 0

2 years ago

your sister is selling girl scout cookies that cost $4.25 a box. your family bought 6 boxes. how many more boxes of cookies must

Nataly [62]

$4.25 • 6= $25.5
$255-$25.5= $229.5
$229.5/$4.25= 54 boxes of cookies

6 0

2 years ago

Determine the sample size required to estimate the mean score on a standardized test within 4 points of the true mean with 98% c

Darina [25.2K]

Answer:

Step-by-step explanation:

You have to use fractions to show your work and I'm not going to do that but just know that it is the answer.

3 0

2 years ago

If a fire is burning a building and it takes 2 hours to put it out using 2000 gal./min., what minimum diameter cylindrical tank

strojnjashka [21]

Answer:

The minimum diameter of the cylindrical tank needed to store the quantity needed to put out the fire is approximately 58.415 feet.

Step-by-step explanation:

A gallon equals 0.134 cubic feet. First, we determine the amount of water ( $Q$ ), measured in cubic feet, needed to put out the fire under the assumption that water is consumed at constant rate: