Math help plz!!!

There is an average of 3.5×10^−2 kilograms of dissolved salt in each liter of seawater. The South China Sea contains approximately ​ 9.88×10^18 ​ liters of seawater.

About how many kilograms of dissolved salt are in the South China Sea?

Enter your answer, in scientific notation, in the boxes.

__ x 10^__ kg

Please help and thank you!

Answers

Answer 1

Answer:

3.458 × 10¹⁷

Explanation:

We multiply the amount of salt per liter, 3.5×10⁻², by the amount of sea water in the South China Sea, 9.88×10¹⁸:

(3.5×10⁻²)(9.88×10¹⁸)

Multiplication is commutative; this means we can switch around the numbers we are multiplying:

(3.5×9.88)(10⁻²×10¹⁸)

Multiplying the numbers in the first set of parentheses, we have 34.58.

To multiply the powers of 10, we use the product property; it states that if we multiply powers that have the same base, we add their exponents:

10⁻²×10¹⁸ = 10⁻²⁺¹⁸ = 10¹⁶

This gives us 34.58 × 10¹⁶.  In scientific notation, the decimal must be behind the first non-zero digit; this gives us 3.458.  When we move the decimal again, we add 1 to the exponent; this gives us 3.458 × 10¹⁷

Answer 2

The kilograms of salt in the South China Sea is required.

The amount of salt in the South China Sea is [tex]3.458\times 10^{17}\ \text{kg}[/tex]

The amount of salt in 1 liter of seawater is [tex]3.5\times 10^{-2}\ \text{kg}[/tex]

[tex]1\ \text{liter of seawater}=3.5\times 10^{-2}\ \text{kg of salt}[/tex]

The volume of seawater in the South China Sea is [tex]9.88\times 10^{18}\ \text{L}[/tex]

[tex]9.88\times 10^{18}\ \text{liters of seawater}=9.88\times 10^{18}\times 3.5\times 10^{-2}=3.458\times 10^{17}\ \text{kg}[/tex]

The amount of salt in the South China Sea is [tex]3.458\times 10^{17}\ \text{kg}[/tex]

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Related Questions

217+37(3x−5)=−4 Drag and drop the statement that shows the solution to the equation into the box.

Answers

Distribute on the left
217+111x-185=-4

Combine like terms
111x+32=-4

Sybtract 32 from both sides
111x=-36

Divide both sides by 111
x= -36/111
x=-12/37

Final answer: x=-12/37

does this help? :D

Answer on picture

estimate 392÷9 show how you estimated

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you can estimate down and change 392 to 360, and 360 divided by 9 equals 40
392 divided by 9 equals 43.55555 and so on. You then need to estimate as the steps go. But that doesn't mean something like 8 to 10. It says that to get an actual, NONE FOREVER going answer. 43.5_ estimated is 44. (5 or more up the score, 4 or less let it rest.)

A grocery store gives away a $10 gift card to every 25th customer and a $20 gift card to every 60th customer. Which customer will be the first to receive both gift cards?

Answers

The 300th customer



I hope this helps

Jazmin is completing an art project. She has two pieces of construction paper. The first piece is 4 4 4444 inches wide and the second piece is 3 3 3333 inches wide. Jazmin wants to cut the paper into strips that are equal in width and are as wide as possible. How wide should Jazmin cut each strip?

Answers

Answer:

Each strip should 11 inches wide.

Step-by-step explanation:

We are told that Jazmin has two pieces of construction paper. The first piece is 44 inches wide and the second piece is 33 inches wide. Jazmin wants to cut the paper into strips that are equal in width and are as wide as possible.

To find the greatest possible width of each strip we will find GCF of 44 and 33.

Factors of 44 are: 1, 2, 4, 11, 22, 44.

Factors of 33 are: 1, 3,11, 33.

We can see that 11 is the greatest common factor of 44 and 33 as 11*4=44 and 11*3=33, therefore, Jasmine should cut each strip 11 inches wide.

Answer:

11

Step-by-step explanation:

We are told that Jazmin has two pieces of construction paper. The first piece is 44 inches wide and the second piece is 33 inches wide. Jazmin wants to cut the paper into strips that are equal in width and are as wide as possible.

To find the greatest possible width of each strip we will find GCF of 44 and 33.

Factors of 44 are: 1, 2, 4, 11, 22, 44.

Factors of 33 are: 1, 3,11, 33.

We can see that 11 is the greatest common factor of 44 and 33 as 11*4=44 and 11*3=33, therefore, Jasmine should cut each strip 11 inches wide.

Identify the multiplier for 2/9 = 6/27

Answers

The multiplier would be 3

The multiplier for the number 2 / 9 will be 3 / 3.

What is multiplication?

Multiplication is the process of determining the product of two or more numbers in mathematics. A product, or an expression that specifies factors to be multiplied, is what happens when you multiply two numbers in mathematics.

The given number is 2 / 9. The multiplier for the number will be calculated as below:-

2/9 = 6/27

( 2 / 9) x ( 3 / 3 ) = ( 6 / 27)

( 6 / 27 )= ( 6 / 27 )

Therefore, the multiplier for the number 2 / 9 will be 3 / 3.

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A cell phone company mistakenly advertises that their data plan costs “0.02 cents” for every kilobytes of data. Write each as a fractional rate

Answers

I am not the best at ratios but based on logic I would say 0.02:1
1/0.02 2/0.04. 3/0.06 4/0.08. 5/0.02

the perimeter of the rectangle is 400 inches.what is the value of j

Answers

the value of J is 35CM
i've got identical tabs, cvs right? 

j=35. i think. plug it in and check yourself.

4 1/5
-
2 7/10
________

Answers

15/10 which equals 1 5/10 which equals 1 1/2
11/2 also download Socratic it is great math help/answers

I HAVE 2 QUESTIONS PLEASE HELP ME AND REAL ANSWERS PLEASE OR I WILL REPORT.

The cost to rent a hall for Alysa's Sweet Sixteen birthday party is $300. Her Mom said she must keep the party cost to no more than $5.00 a person. She watched her mom write an expression on her notes that is listed below. What does the variable represent in this expression?

300+200
------------------
X

A. The number of people attending

B. The amount to rent the hall

C. The amount of food

D. The total cost of the party


What is the sum of the coefficients in the expression

2m^2n + 2mn^2 - m + 3n + 9

PLEASE HELP ME

Answers

The answer is C. Because the mother said she can't waste more than $500 so in order for her to know how much she wasted is to add all the numbers answers

Answer:

Step-by-step explanation:

1. For her birthday, the mother stated that 5.0 per person, so then the number of people is going to change the party's budget. Now the numerator shows what the girl is going to spend, in comparisson to what she is sopposed to X. So then X is the cost of the party.

2. This one is tricky because we have to take into account that we can onky sum coefficients if they are alike. We can play with this expression by factorizing in different modes

x-5 greater than or equal to - 2 or 2x less than 6

Answers

that depends on what the value of x is

What is 101/10 as a mixed number

Answers

101/10 as a mixed number is 10 1/10.

10 1/10 is the mixed fraction version of 101/10

A(n)
is a letter used as a placeholder for an unknown value.

Answers

i dont get it. you need more info for that to be answered

A variable is the letter used as a placeholder for an unknown value, playing a pivotal role in mathematical reasoning and problem-solving processes.

A placeholder for an unknown value in mathematics, algebra, and other fields is typically represented by a variable. Variables are symbols, often letters like x, y, or z, used to denote unspecified or changing quantities.

They serve as placeholders for values that can vary or are yet to be determined within a given context. In algebraic equations, variables enable the representation of relationships between quantities, facilitating problem-solving and mathematical modeling.

By assigning specific values to variables, equations can be solved, functions can be evaluated, and patterns can be analyzed. Variables are fundamental in various mathematical concepts, including equations, inequalities, functions, and formulas, allowing for flexible and dynamic representations of mathematical relationships.

a triangle has sides of lengths 6 and 9. What value could the length of the third side?

Answers

Any number except one greater or equal to 15  or 0.

No one sides can be greater than or equal to the sum of the other 2 sides.

For example, side length 8 would be fine
The answer is 23

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Your friend's final bowling score is 105. Your final bowling score is 14 pins less than your friend's final score. Write and solve an equation to find your final score. Use x to represent your final score.
Equation:
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Answers

your score is 14 less your friend's can be written as:
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ASAP  During a 4-month-long drought, the water level in a lake changed by
−3
1
2

feet. The water level changed at the same rate each month.
What is amount the water level changed in 1 month?
Enter your answer in the box.

Answers

3 1/2 = 7/2

7/2 / 4 = 7/8

 it changed by -7/8 feet = 10 1/2 inches each month

The amount of changes of water level in a lake for 1 month will be

⇒ - 7/8 feet

What is mean by Fraction?

The fraction is a part of whole number, and a way to split up a number into equal parts.

Given that;

In 4 month long drought,

The changes of water level in a lake = - 3 1/2 feet.

Now,

Find the changes in water level for 1 month as;

Since,

The changes of water level in a lake for 4 month = - 3 1/2

After change the mixed fraction in a improper fraction as;

- 3 1/2 = - 7/2

Thus, The changes of water level in a lake for 4 month = - 7 / 2

So, The changes of water level in a lake for 1 month = - 7 / 2 ÷ 4

After divide we get;

The changes of water level in a lake for 1 month = - 7 / (2 x 4)

                                                                           = - 7 / 8

Therefore,

The amount of changes of water level in a lake for 1 month will be

⇒ - 7/8 feet

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how to make a percentage a fraction and a decimal

Answers

Say you have 14 out of 100.  To make that into a fraction, you simply put the first number (as long as it says over or out of) on top and the second on bottom.  You can also make that into a decimal, which would be .14 which is also equal to 14%.

Final answer:

To convert a percentage to a fraction, write it with a denominator of 100 and simplify. To make it a decimal, divide by 100. Convert a decimal to a percentage by multiplying by 100, and to a fraction by writing it with the place value as the denominator.

Explanation:

To convert a percentage to a fraction, you express the percentage value as a fraction with a denominator of 100. For instance, to convert 25% to a fraction, you write it as 25/100, which can be simplified to 1/4. When converting a percentage to a decimal, you divide the percentage value by 100. So, 25% as a decimal is 0.25.

To convert a decimal to a percentage, you multiply the decimal by 100 and add the percent symbol (%). For example, the decimal 0.83 would be 83% when converted to a percentage. To make a decimal a fraction, you express it in terms of its place value as a denominator and simplify if possible. For example, 0.83 can be expressed as 83/100 as a fraction.

Calculating percent composition involves using the part-total relationship. If you know the fractional score, you multiply it by 100 to find the percentage score. For instance, if you get 96 out of 100 on a test, you calculate the percentage composition by dividing 96 by 100 to get 0.96, then multiply by 100 to get 96%.

My teacher In music is making us do a paper on bands ( more like lesser known)
I already chose a couple
Panic! At The Disco
Grouplove
Portugal The Man
I need one more any suggestions

Answers

CNCO its a latin band
Some of my fave bands:
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My Chemical Romance
Green Day
Marina and the Diamonds
Coldplay
Queen
ACDC
Penatonix

Infamous band:
My friend really likes Sister Cities. I haven't heard them :0

2p=kx-t how do you solve for x

Answers

isolate x on one side of the equation. divide by k.
2p over k =x-t
add t
(2p/k)+t = x.
hope this helps and have a wonderful day!
Final answer:

To solve for 'x' in the equation 2p=kx-t, you would first need to isolate 'x' on one side of the equation. Add 't' to both sides to get 2p + t = kx, then divide through by 'k' to solve for 'x'. Hence, x = (2p + t) / k.

Explanation:

To solve the equation 2p=kx-t for x, you would first need to isolate x on one side of the equation. This can be done by adding 't' to both sides of the equation, which results in 2p + t = kx.

Then, to isolate 'x', you would divide both sides of the equation by 'k'. So, the solution for x would be x = (2p + t) / k.

This rearrangement allows you to solve for x in terms of p, t, and k. This is an exercise in algebra, with the goal of isolating the variable you are attempting to solve for, in this case, x.

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What numbers fit in the range of 13-23

Answers

The range of 23 and 13 would be 10
14 15 16 17 18 19 20 21 22

you used p minutes one month on your cell phone the next month you used 75 fewer minutes

Answers

(p-75)+p= total amount used


Matthew has a rectangular area in his backyard that is 9 meters long and 6 meters wide, he wants a fence that would go around it as well as grass sod to cover it. How many meters of fence will he need?

Answers

The fence would need to be 30ft.

Answer:7

Step-by-step explanation:

At 5 a.m., the temperature at an airport was −9.4°F . Six hours later, the temperature was 2.8°F . Which expression represents the total temperature change over the six hours?

Answers

Let x = the number of hours since 5 a.m.
Let y = temperature, °F

Let the total temperature change be modeled by the expression
y =  ax + b

At 5 a.m., x = 0 and y = -9.4°F. Therefore
b = -9.4

When x = 6 hours, y = 2.8°F. Therefore
6a + b = 2.8
6a - 9.4 = 2.8
6a = 12.2
a = 2.0333

The expression is
y = 2.0333x - 9.4

Answer:
y = 2.0333x - 9.4
where
x = hours since 5 a.m.
y = temperature, °F

Answer:

|2.8 - (-9.4)|

Step-by-step explanation:

The correct answer is |2.8 - (-9.4)|.

how would i solve |-9x|=64

Answers

|-9x| = 64
-9x will become 9x

9x = 64
x = 64/9
Since -9x is absolute it would turn into 9x because anything in absolute form turns into a positive. Then, you're left with 9x=64 so you divide both sides by 9 and you end up with x=7.11 . I hope this helped!

How does identifying the part and the whole help you to write the percent proportions

Answers

Percent proportions are written in a fraction-like format to which you compare them to another proportion written in a fraction-like format. The top is used for "part" and the bottom is used for "whole". The relationship between part and whole is used to compare to the relationship of the other proportion's part and whole.

the high school lunch menu repeats every 6 school days the middle school lunch menu reapeat every 8 school days on march 5th both school served chicken wraps what is the next calendar date on which both schools will serve chicken wraps

Answers

Hey! Hope that I can help.

To do this, I circled all the dates on the attached calendar, with red = middle and blue = high. The 6th of March in 2018 is when both schools will have chicken wraps again.
Final answer:

To find the next date both schools will serve chicken wraps, we find the least common multiple of the days their menus repeat, which is 24 days. We then count 18 school days (excluding weekends) from March 5th.

Explanation:

This question is about finding the least common multiple (LCM) of 6 and 8, which are the days that the lunch menus repeat for the high and middle schools respectively. The LCM of 6 and 8 is 24. This means that both schools will serve chicken wraps every 24 school days.

Assuming that March 5th falls on a school day, and that the school operates from Monday to Friday with the weekends off, we subtract weekends from this period. In a span of 24 weekdays, there are usually around 6 weekend days (3 weekends). So, from March 5th, we count 18 school days forward (24 days minus 6 weekend days). The result gives us the next day both schools serve chicken wraps.

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Three bags of wheat, two bags of corn, and one bag of oats weigh the same as one bag of wheat, one bag of corn and five bags of oats. If two bags of corn and one bag of oats weighs 26 pounds, and one bag of corn weighs 10 pounds, how much does one bag of wheat weigh?

Answers

a bag of wheat equals 7 pounds


x = wheat, y = corn, z = oats

3x + 2y + z = x + 5z
2y + z = 26
y = 10 .........corn weighs 10 lbs

2y + z = 26
2(10) + z = 26
20 + z = 26
z = 26 - 20
z = 6 ......oats weigh 6 lbs

3x + 2y + z = x + 5z
3x + 2(10) + 6 = x + 5(6)
3x + 26 = x + 30
3x - x = 30 - 26
2x = 4
x = 4/2
x = 2 <=== wheat weighs 2 lbs

3/8__1/4
greater than
less than
equal too

EXPLAIN

Answers

3/8 = 0.375

1/4 = 0.25

0.375 is greater than 0.25

 so 3/8 is greater than 1/4

The total land area on earth is about 6×10 to the seventh power square miles. The layered of Australia is about 3×10 to the six power square miles. About how many times larger is the land on earth than land of Australia

Answers

The is earth is 20 times larger than the land of Australia. 6 times 10^7 is 60,000,000 and 3 times 10^6 is 3,000,000 and when you divide that you get 20.

snow fell 20% of the days in November. How many days in November did it snow. (Hint There are 30 days in November. )

Answers

Multiply 30 buy the decimal form of 20% to get the answer.

30*0.2= 6

Final answer: 6 days

An airplane flies 105 miles in 1/2 hour. How far can it fly in 1 and 1/4 hours at the same rate of speed?

Answers

First, let's figure out how many miles the plane can fly in 1/4 hour. Since this is half of 1/2 hour, it can fly half of 105 miles, which is 52.5 miles. Next, we need to know how many miles it can fly in one hour. Since it flies 105 miles in 1/2 hour, it flies twice that (210) miles in one hour. So then in 1 and 1/4 hours, it flies 210+52.5 miles.
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