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azamat
3 years ago
14

Marine biologists study the number of manatees killed by powerboats in Florida and warn that the growing number of powerboats re

gistered in Florida threatens the existence of manatees. Here are the data where powerboat numbers are in thousand.
Y ear 1982 1983 1984 1985 1986 1987 1988 1989
Manatee killed 13 21 24 16 24 20 15 34
Powerboat 447 460 481 498 513 512 527 559
Year 1990 1992 1993 1994 1995 1996 1997 1998
Manatee killed 33 33 39 43 50 47 53 38
Powerboat 585 614 646 675 711 719 716 716

Mean Standard deviation Correlation coefficient (r)
Manatee killed 42.7826 23.1143 0.9461
Powerboat 672.7391 166.3188

What are the explanatory and response variables in this study?
Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0
Wow okay that’s a lot...gimme a sec
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Use digits to write each number. 5. Twelve thousand, three hundred forty-five 6. Fifty-three million, eighty-nine thousand, seve
postnew [5]

Answer:

5. Twelve thousand, three hundred forty-five can be written as 12,345.

6. Fifty-three million, eighty-nine thousand, seven hundred two can be written as 53,089,702.

7. Two hundred fifty-six thousand, seven hundred eighty can be written as 256,780.

8. Eighty-five thousand, nine can be written as 85,009.

9. Two hundred thirty-eight thousand, eight hundred fifty-seven miles can be written as 238,857.

Step-by-step explanation:

According to the place value chart:

Millions     Hundred Th. Ten Th     Thousands   hundreds   Tens   Ones

1,000,000    100,000       10,000       1,000             100            10        1

We can write any number with the help of place value chart:

For example:

8 thousand, seven hundred seventy-five.

8,000+700+75 = 8,775

Now consider the provided information.

5. Twelve thousand, three hundred forty-five

This can be written as:

12,000+300+45 = 12,345

Twelve thousand, three hundred forty-five can be written as 12,345.

6. Fifty-three million, eighty-nine thousand, seven hundred two

This can be written as:

53,000,000+89,000+700+2 = 53,089,702

Fifty-three million, eighty-nine thousand, seven hundred two can be written as 53,089,702.

7. Two hundred fifty-six thousand, seven hundred eighty

This can be written as:

256,000+780 = 256,780

Two hundred fifty-six thousand, seven hundred eighty can be written as 256,780.

8. Eighty-five thousand, nine

This can be written as:

85,000+9 = 85,009

Eighty-five thousand, nine can be written as 85,009.

9. Two hundred thirty-eight thousand, eight hundred fifty-seven miles

This can be written as:

238,000+800+57 = 238,857

Two hundred thirty-eight thousand, eight hundred fifty-seven miles can be written as 238,857.

8 0
3 years ago
Fill in the boxes with the correct answers. Simplify the polynomial expression. (-4x^2+17x+9)–(-13x^2+5x+16
kiruha [24]
What do you want to calculate?

CALCULATE IT!
Simplify
Evaluate
Lesson

Let's simplify step-by-step.
−
4
x
2
+
17
x
+
9
−
(
−
13
x
2
+
5
x
+
16
)
Distribute the Negative Sign:
=
−
4
x
2
+
17
x
+
9
+
−
1
(
−
13
x
2
+
5
x
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16
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=
−
4
x
2
+
17
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9
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−
13
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(
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(
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=
−
4
x
2
+
17
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+
9
+
13
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−
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16
Combine Like Terms:
=
−
4
x
2
+
17
x
+
9
+
13
x
2
+
−
5
x
+
−
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=
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4
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17
x
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5
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+
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9
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=
9
x
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+
12
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+
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7
Answer:
=
9
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7
8 0
4 years ago
Read 2 more answers
In 1985, the price of a gallon of milk cost about $2.20 per gallon. In 2005, the price of a gallon of milk cost about $3.50 per
Assoli18 [71]

the percent increase in the price of a gallon of milk from 1985 to 2005 is 59%

Define percent increase

Percent increase can be described as the rise in the value of an item, in this case the value is milk.

Write out the parameters

In 1985 the price of a gallon of milk is $2.20

In 2005 the price is $3.50

Formula for percent increase

new price-old price/new price × 100

Calculate the percent increase

new price= $3.50

old price= $2.20

= 3.50-2.20/2.20

= 1.3/2.20

= 0.59 × 100

= 59%

Hence the percent increase from 1985 t0 2005 is 59%

Please see the link below for more information

brainly.com/question/878172

6 0
3 years ago
A small box can hold 4 cans and a long box can hold 12 similar cans. How many cans will 15 large boxes hold than the same number
Katyanochek1 [597]
Maybe 240 I just multiplied 15 and 16 because 12 times 4 is 16
3 0
3 years ago
What is the total price of an $18.97 item plus 8% slaes tax?
chubhunter [2.5K]

Answer:

$20.49

Step-by-step explanation:

8% = 8/100 = 0.08

Therefore, 8% of 18.97 = 0.08 x 18.97 = 1.5176

So the total price = 18.97 + 1.5176 = 20.4878 = $20.49

Alternatively,

108% = 108/100 = 1.08

18.97 x 1.08 = 20.4878

4 0
2 years ago
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