Mathematics Middle School

Is three quarters of earths water salt water?

Answers

Answer 1
The Earth is a watery place. But just how much water exists on, in, and above our planet? About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog.
Answer 2
no, roughly 97% of water on earth is salt water and only 3% is freshwater, since most of the water on earth is from the ocean... btw, this has nothing to do with math... make me the brainliest plz

Related Questions

I need the answer to this question ASAP please help.

Answers

(3/5)^3 = (3^3)/(5^3) = 27/125
3^3 = 3x3x3 = 27
5^3 = 5x5x5 = 625
27/625 is the answer and it can’t be simplified

Can someone explain domain and range?

Answers

Domain generally represents x and range y

The domain of a function is the complete of possible values of the independent variable. Range: the set of all output values of a function.

1. Four more than five times a number is less than 54. Evaluate this problem situation for values of the number.

2. Two times the sum of a number and four increased by three is at most six less than the number. Evaluate this problem of situation for values of the number.

Answers

1. 4 + 5x < 54
- subtract 4 to the right side
- divide by 5
- answer: x <10 

2. 2(x + 4) + 3 = 6 - x
- distribute 2 to x and 4
- add 8 and 3
- add -x to the left side
- subtract 11 to right side
- 2x= -5 
answer: x= -5/2
The answer is  -5/2
thanks (:

Is the value of the 1 in 1,440,000 10 times as great as the value of the 4 in the hundred thousands place?

Answers

If you multiply 400,000 by 10 you get 4,000,000. This means that, yes, the value of the 1 is 10 times the 4 in the hundred thousands place. 
Hope I helped :)
Final answer:

The value of the 1 in the number 1,440,000, which is in the million's place, is 2.5 times greater than the value of the 4 which is in the hundred thousand's place.

Explanation:

The value of the 1 in the number 1,440,000 is in the millions place, thus it represents 1,000,000. The 4 on the other hand, is in the hundred thousands place, and thus represents 400,000. The value of the 1 is therefore not just ten times the value of the 4, but in fact, it is 2.5 times greater.

Here is the process: value of 1 = 1,000,000, value of 4 = 400,000, so 1,000,000 / 400,000 = 2.5. Therefore, the value of 1 is 2.5 times the value of 4.

Learn more about Place Value here:

https://brainly.com/question/35447631

#SPJ2

What is 239901 rounded to the nearest ten thousand

Answers

The answer is 240,000

Which is the better buy 3 pounds for 8.31 or 5 pounds for 12.95

Answers

answer:

5 pounds for 12.95

explanation:

to solve, find the unit rate. the cheaper unit rate is the best and cheapest choice.

8.31/3 = 2.77
12.95/5 = 2.59

5 pounds for 12.95 is the cheaper choice because it has a smaller unit rate.

Hope this helps! :D
It'd be better to buy the 5 pounds for 12.95.

If you divide the price by the amount, it results as 2.59 as opposed to 3 pounds for 8.31 which is 2.77 per pound, making it clear now that the 5 lb for 12.95 is the better deal

explain the simplified form of 3abc/abc when abc doesn't equal zero?

Answers

Dividing abc, which is a*b*c, we get 3*a/a*b/b*c/c=3

What does "how many" mean in math?

Answers

Like, how many cars are in a line or how many fruits did this person eat.
"How many" in Math is asking for the amount of something. For instance, of there are 5 soccer balls and the problem asks, "How many soccer balls are there?", you would answer with the amount of soccer balls: 5.


7.The mass of a grain of sand is approximately 2.8×10^−11 grams

Select from the drop-down menu to correctly complete the statement.
The mass of a grain of sand is approximately 2.8×10^−8

Answer Choices:
A. Milligram
B.Gram
C.Killogram

Answers

i just took the test.. the answer is A. Have a nice day!

Answer:

a

Step-by-step explanation:

Solve the equation ax+b=c for x

Answers

ax+b=c
ax=c-b
x=(c-b)/a
The solve of this equation will be X=(C-b)/A

If I increase an amount by 7% what is the multiplier

Answers

The answer is:  " 1.07 " .
_______________________________________
Explanation:
_______________________________________
100 % + 7 % = 107 % ;
_______________________________________
107 % = 107/100 = 107 ÷ 100 =   1.07  .
_______________________________________
1.07 hope this helps

simplify |-7.5| - |10.3|

Answers

|-7.5| - |10.3| = 7.5 - 10.3 = -2.8
|-7.5|  = 7.5
|10.3| = 10.3

Answer is 7.5 - 10.3  = -2.8

If each square in the grid has a side lengt of 8mm,what is the-width and height of the rectangle

Answers

one of them is 4 and one is 2

Compare the integers indicated on the graph below.

A. -6 > -12

B. -12 > -6

C. -4 > -8

D. -8 > -4






5)

Answers

The correct answer is A. -6 > -12


Hope that helped! :)

Find last​ year's salary​ if, after a
2% pay​ raise, this​ year's salary is
$38,760.

Answers

Your answer would be $37,984.8

Decimals between 5.1 to 5.2

Answers

There are an infinite number of decimals between 5.1 and 5.2, 5.11,5.11111111111111.
It very simple. There are multiple choices. 1.12, 1.13 ,1.14, 1.15, 1.16, 1.17 ,1.18, 1.19, 

In albany it is -4°f in chicago it is -14°f‚ in minneapolis it is -11°f‚ and in toronto it is -13°f. in which city is the coldest?

Answers

Chicago because on the number line, the numbers to the left get smaller, and the numbers to the right get bigger. Negatives on the number line are going right, and getting smaller, even though it seems the numbers are getting bigger.
EX: -14,-13, -12,-11,-10...

the largest negative number would be the coldest, so -14 would be the coldest.

 Chicago is the coldest city

one type of insect is 0.0052 meter long.what is this length in scientific notation

Answers

Because scientific notation has to be in between 1 and 10, you would need this to be 5.2. Count the spaces and since its getting smaller your exponent is negative. 

Your answer should be 5.2*10^(-3)

Ms.Phipps made 12 dolls for gifts this year. She made 4 1/2 times that number last year. Find the total number of dolls she made this year and last year.

Answers

54 dolls were created this year and last year


12 x 4.5 = 54 

54 last year
12 this year

Simplify. 4−8÷2+3

Please help me with this problem.

Answers

PEMDAS says the first thing you need to do is division:

4 - 4 + 3

Then, do subtraction and addition from left to right:

0 + 3
3

Hope this helped!

Which statements about quadrilaterals are true? Choose all answers that are correct. A. A square is always also a parallelogram. B. A parallelogram is always also a rectangle. C. A rhombus is always also a trapezoid. D. A rectangle is always also a parallelogram.

Answers

The answer is D because the qualities of the rectangle is the same as a parallelogram.
D is the answer i got D to

One package of fruit drink contains 6 drinks. Which of the following list the ordered pairs (packages, number of drinks) for 1, 2, 3, and 4 packages of fruit drinks?

Answers

I think this is 

(1,6), (2,12), (3,18), (4,24)

1 package has 6 drinks so that = (1,6)

 then multiply 6 by the number of packages for total number of drinks

 so you end up with (1,6) (2,12) (3,18) (4,24)

math questions down below

Answers

#1 the correct answer is 6/7
#2 the correct answer is -9

What is the value of 11−3m , when m = 2? (Please do it step by step because I dont know how to do this ;[ )

5

6

10

12

Answers

Substitute the variable for the value given.

11 - 3m becomes 11 - 3(2)

Now do the order of operations.

11 - 3(2) =
11 - 6 =
5

So, the answer is 5.

Susan currently has an account balance of $1,336.60. Her initial deposit on the account was $820 and it earned 4.5% simple interest. How long has Susan held the account?

Answers

Here we need the time, so
t = I/pr = (1336.6-820)/(820)(.045) = 14 years


how to simplify this

Answers

Factor it out.
Both exponent cancel out each other which equals 1.

What question is equivalent to 0.83

Answers

if you want a question:

1 - 0.17 = 0.83

0.50 + 0.33 = 0.83

really, all you have to do is come up with a equation that equals to 0.83

hope this helps

explain in your own words what the mean of a negative exponent means?

Answers

A negative exponent is the opposite of a regular exponent so for example, 5 to the power of -3 is 1/125 

What is the value of the underlined digit? 5,678.321. The underlined digit is 1.

Answers

0.001

Hope this helps!
.001     the decimal is important because in the number the 1 is after the decimal, itrepresents the fact that its not a whole number. The two zeros are there to replace the two numbers that come before the 1 and after the decimal. they replace 32

-2/3y - 3/4=5 I am very confused

Answers

-2/3y - 3/4 = 5

Add 3/4 to both sides.

-2/3y = 5 + 3/4

Simplify.

-2/3y = 5 3/4

Multiply both sides by -3/2.

-3/2 × -2/3y = 5 3/4 × -3/2

Simplify.

y = 23/4 × -3/2

Simplify.

y = -69/8 AND y = -8 5/9

~Hope I helped!~
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