Mathematics College

A baby blue whale can gain up to 200 pounds a day after it is born. If a baby blue whale has gained 7 x 103 pounds since its birth, how many days old is it?Express your answer
in standard notation.

A Baby Blue Whale Can Gain Up To 200 Pounds A Day After It Is Born. If A Baby Blue Whale Has Gained 7

Answers

Answer 1

Answer:

35 days

Step-by-step explanation:

Weight gain per day = 200 pounds

Weight gained by a whale since birth = [tex] 7*10^3 [/tex] pounds

Number of days of the whale = [tex] \frac{7*10^3}{200} = \frac{7*10*10*10}{200} [/tex]

[tex] = \frac{7*1000}{200} = \frac{7000}{200} = \frac{70}{2} = 35 [/tex]

In standard notation form, the whale is 35 days old.

Related Questions

A bag has 5 yellow marbles, 3 red marbles and 2 blue marbles. Quinn randomly picks a marble from the bag and returns it before another is picked. How many times would Quinn expect to pick a blue marble if he picks a marble 200 times?

Answers

Answer:

Quinn can expect to pick blue 40 times

Step-by-step explanation:

the probability of picking blue is stated as 2/10 which can be reduced to 1/5

multiply the number of times they pick a marble ( shown as 200) by the probability of picking a blue one ( 1/5)

200 x 1/5 = 200 / 5 = 40

Quinn can expect to pick blue 40 times

Answer:40 blue marbles

Step-by-step explanation:

First find the probability of a blue marble

P (blue) = number of blue marbles / total marbles

            = 2 blue/ ( 5+3+2) total

             = 2/10

              =1/5

We can use this since we return the marble to the bag each time

We multiply this by 200 for the number of times it is picked

200 * 1/5 = 40

We should expect to pick 40 blue marbles

Helllllllllllllp meeeeeeee I’m an idiotttttt

Answers

Answer:

3(4 + 3x)

distribute the 3 into both numbers

3*4

3*3x

9x +12

Step-by-step explanation:

what if f(0)?
12 only
2 and 3 only
-2,-1,1 and 2 only
-2,-1,1,2 and 12

Answers

Answer:

12 only

Step-by-step explanation:

I did the test

decrease of 65% is the same as multiplying by what
percent?

Answers

Answer:

35%

Step-by-step explanation:

A decrease of 65% would be the same as multiplying the value by 35%.

100% - 65% = 35%

Let's use an example.

You have $150 dollars in stock and it decreases by 65%

150 - (.65*150) =

150 - 97.5 = $52.50

Now let's just multiply $150 by .35 (which is 35%)

150 * .35 = $52.50

It's the same!

Jack and Jillian sell apples at a produce stand. Jillian earns $2 for each bag of apples she sells. At the end of the week, Jack has earned $8 less than Jillian. The following expression shows Jack's earnings:

2x − 8

In the expression, what does the first term represent?

Answers

Answer:

2(x-4)

Step-by-step explanation:

it's the only thing i could think of, or its one

Answer:

Jillian's earnings at the end of the week


Which construction is partially represented by the diagram on the baseball field? Explain the next set of instructions to correctly finish the construction.

Answers

Answer:

Construction of an angle bisector is partially represented by the diagram on the baseball field.

Step-by-step explanation:

Angle bisector of an angle bisects it into two equal angles.

Construction of an angle bisector is partially represented by the diagram on the baseball field.

Consider the figure:

From point B, draw an arc by opening the compass up to the same extend as we did while drawing arc from point A.

Take the point of intersection of both the arcs as C.

Join OC.

OC is the angle bisector of the angle.

Two dice are tossed. The probability that the total score is a prime number is:​

Answers

Step-by-step explanation:

50/50 it's random I think but I learned that in science

50/50 because there are 3 prime numbers and 3 composite numbers on a dice

At the beginning of the quarter there were 40 students in our class. At the final exam, there are only 32 students left. By what percent did the class size decrease? by 96​

Answers

Answer:

20 % decrease

Step-by-step explanation:

First find the number of students that left

40 -32 = 8

Take the number of students that left and divide by the original number of students

8/40

1/5

.20

20%

20 % decrease

Answer:

20% decrease ._.

Step-by-step explanation:

If u could subscribe to my friend penny_pg3d on YT, that would be great :)

1. Lori drove 141 miles in 3 hours. What was Lori’s average rate of speed?

Answers

Answer:

47 miles per hour

Step-by-step explanation:

The average rate of speed is the miles divided by the hours

141 miles / 3 hours

47 miles per hour

Answer:

47

Step-by-step explanation:

141 / 3

Which pair of triangles is congruent by ASA?​

Answers

what do the triangles look like

1m-23=1+4m Please help

Answers

Answer:

m= -8

Step-by-step explanation:

Answer:

m=-8

Step-by-step explanation:

Hope this helps :)

A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period.

Single Policyholders Married Policyholders
n1 = 900 n2 = 400
Number making claims = 135 Number making claims = 24

Required:
a. Use a level of significance α = 0.05. Test to determine whether the claim rates differ between single and married male policyholders. Explain your determination.
b. Provide a 95% confidence interval for the difference between the proportions for the two populations.

Answers

Answer:

Step-by-step explanation:

Given the following :

Single policy holders (n1) = 900

Number making claims (x1) = 135

Married Policy holders (n2) = 400

Number making claims (x2) = 24

α = 0.05

a. Use a level of significance α = 0.05. Test to determine whether the claim rates differ between single and married male policyholders. Explain your determination.

Null: p1 - p2 = 0

Alternative : p1 - p2 ≠ 0

p = (n1p1 + n2p2) / n1 + n2 ;

p1 = x1/n1 = 135 / 900 = 0.15

p2 = x2/n2 = 24 / 400 = 0.06

p = (900*0.15 + 400*0.06) / (900 + 400)

p = 0.1223076

Test statistic (z):

(p1 - p2) / √p(1-p)(1/n1 + 1/n2)

(0.15 - 0.06) / √0.12231(1-0.12231)(1/900 + 1/400)

= 4.5710979

Decision:

Reject Null if P < α

Obtaining p value from z score using calculator :

P value = 0.0001

0.0001 < 0.05

Hence,

Reject Null

7.86÷0.2
I need you to answer with step by step explaination

Answers

1. Moved the decimal on both sides
2. The equation became 78.6/2
3. Divided 7/2, got 3
4. Divided 8/2, got 9
5. Put the decimal point on the preferred spot
6. Divide 6/2, got 3
7. 78.6/2 equals 39.3

The London School of Economics and the Harvard Business School have conducted studies of how chief executive officers (CEOs) spend their time. These studies have found that CEOs spend many hours per week in meetings that include conference calls, business meals, and public events. Suppose that the data below show the time spent per week in meetings (hours) for a sample of 25 CEOs.
14 15 18 23 15
19 20 13 15 23
23 21 15 20 21
16 15 18 18 19
19 22 23 21 12
a. What is the least amount of time spent per week on meetings? The highest?
b. Use a class width of two hours to prepare a frequency distribution, a relative frequency distribution, for the data.

Answers

Answer:

(a) The least amount of time spent per week on meetings is, 12 hours.

The highest amount of time spent per week on meetings is, 23 hours.

(b) Shown below.

Step-by-step explanation:

(a)

Arrange the data in ascending order.

S = {12 , 13 , 14 , 15 , 15 , 15 , 15 , 15 , 16 , 18 , 18 , 18 , 19 , 19 , 19 , 20 , 20 , 21 , 21 , 21 , 22 , 23 , 23 , 23 , 23}

The least amount of time spent per week on meetings is, 12 hours.

The highest amount of time spent per week on meetings is, 23 hours.

(b)

The frequency distribution table with the relative frequency distribution is as follows:

Class Interval   Frequency        Relative Frequency

    12 - 14                         3                            0.12

    15 - 17                         6                            0.24

    18 - 20                 8                            0.32

    21 - 23                 8                            0.32

     Total                        25                             1.00

Answer all ten questions for tons of points. Please don’t take forever

Answers

Answer:

Hey looks like you did'nt post the question

msg me below and ill try to help you

HELLLLLLLLPPPPPPPPPPPP!!!!!!

Answers

Answer:

3 bars of soap and 2 toothbrushes.

Step-by-step explanation:

All of the following are rational except
Sqrt 0.49
Sqrt 19
Sqrt 900
Sqrt 100

Answers

Answer:

0.49

Step-by-step explanation:

for it to be rational there should not be no decimal nor pi .

0.49 is the correct answer

Jonas has 20 coins, all nickels and dimes. The total value is $1.25. If n represents the number of nickels, which algebraic equation represents this situation?
A. 20n = 125
B. 5n = 1.25
C. 5n + 10(20 - n) = 125
D. 5n + 10n - 20 = 125

Answers

Answer:

a

Step-by-step explanation:

49 points in seven games unit rate

Answers

Answer:

7

Step-by-step explanation:

1. Do 49÷7 to get the average of 7

Quick I need help.....

Answers

the third one x>_ -4

Answer:

C

Step-by-step explanation:

Subtract both sides by 2

2-2 is 0

-10 - 2 is 12

-3x < 12

Divide both sides by -3

Switch signs cause dividing a negative

x > -4

A chef needs 60 oz of hot pepper sauce.
Which container size represents the better buy?
What will be the total cost of those containers?

Answers

Answer:

30-oz is a better buy

Total cost: $40.80

Step-by-step explanation:

The container with a lesser price per oz will be the better buy.

Let's calculate how much each container will give us per oz:

2-oz container = $1.99/2 = $0.995 per oz

5-oz container = $3.95/5 = $0.79 per oz

12-oz container = $8.76/12 = $0.73 per oz

30-oz container = $20.40 = $0.68 per oz

The 30-oz container is cheaper and would be a better buy.

In total the chef would buy 60-oz of hot pepper sauce for = 60-oz*$0.68 = $40.80

A basketball player scored 30 times during one game. she scored total of 50 points, two for each two point shot and one for each free throw. How many two point shots did she make? How many free throws

Answers

Answer:

it is 20

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

What is 837 divided by 36?

Answers

837 divided by 36 is 23.25 :)

Answer:

23.25 you will just divide it

Step-by-step explanation:

how to graph a line with slope 2 passing through the point (2, -1)​

Answers

First, plot a point on (2, -1). This point is going to be in the fourth quadrant, since it is going to be at 2 = x and -1 = y. You know that there is a slope of 2, so you should follow the rule of “rise over run”. This means that the slope should be seen as a fraction, where the numerator is the rise (along the y axis), and the denominator is the run (along the x axis). The slope of 2/1 tells you to move two points up from (2, -1), and to the right 1 point. Then make a new dot at this new destination, (3, 1). Now move two units up from this new point, and one to the right, to find a third point, (4, 3). You need three points to correctly show a line. Draw a line through these three points, and you have your graph.

Which of the following expressions has the greatest value? A. 62 O B. 53 O c. 52 O D. 32​

Answers

Answer:

A. 62

Step-by-step explanation:

Ummm this is prolly the last time tehe

Answers

Answer:

1. 25% increase

2. 90% decrease well you get 8.4 but that's the closest

3. 71% increase

4. 20% decrease

5. 75% decrease

6. 150% increase

Step-by-step explanation:

Simplify -6 to the power of 2 divided by 12- 2(-7).

Answers

Answer: 18

Step-by-step explanation: -36 / -2 simply

rounded to the nearest thousandth, the number 0.0000741

Answers

Answer:

.000

Step-by-step explanation:

A farmer has a total of 7725. Corn plants he wants to plant 40 corn plants in each row how does the following work in long division

Answers

Answer:

The answer is B

Step-by-step explanation: Let me know if you need an explanation.

The length of a rectangle is three times its width. if the perimeter of the rectangle is 48 yd, find its area.

Answers

Answer:

all the sides multiplies should equal 48

Step-by-step explanation:

sorry I don't know

The rectangle will have a 432 yd² area.

What is Area?

The area is the entire amount of space occupied by a flat (2-D) surface or an object's form. On a sheet of paper, draw a square using a pencil. It has two dimensions. The area of a form on paper is the area that it occupies.

Given, The length of a rectangle is three times its width. if the perimeter of the rectangle is 48 yd

Let "l " be the length of the rectangle

thus, the width of the rectangle = l/3

Since the Perimeter of the rectangle  = 48 yd

From the general formula of the Perimeter of the rectangle:

perimeter = 2*(length + width)

In our case

Perimeter = 2*( l + l/3)

Perimeter = 2*(2l/3)

Perimeter = 4L/3

Thus,

4L/3 = 48

L = 36 yd

So width = 36 /3 = 12

Since the area of the rectangle = length * width

Area = 12 * 36

Area = 432

therefore, the area of the rectangle will be 432 yd².

Learn more about Area here:

https://brainly.com/question/27683633

#SPJ2

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