MATHEMATICS MIDDLE SCHOOL

The body of a person who weighs 50 kilograms contains around 2 × 10^2 grams of sodium chloride. How much sodium chloride is contained in the bodies of 1.8 × 10^3 people who each weigh 50 kilograms? Represent the answer in scientific notationA. 3.6 × 10^5 gramsB. 1.1 × 10^1 gramsC. 36 × 10^5 gramsD. 11 × 10^1 grams

Answers

Answer 1
Answer:

Answer:

Answer is A.3.6*10^(5)

Step-by-step explanation:

Mass of Sodium Chloride in one 50kg person = 2*10^(2) grams

Mass of Sodium Chloride in 1.8*10^(3) 50kg people = 2*10^(2) * 1.8*10^(3)

=(1.8*10^(3))*(2*10^(2))

=3.6*10^(5)

So the Answer is A.

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4x +2y = 12-4x + 5y= -5

HELP PLS ASAPKira solved the equation in the following way.
7/2 − 2x = 11/2
7/2 − 7/2 − 2x = 11/2 − 7/2
−2x ÷ −2 = 4/2 ÷ − 2
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Describe the properties of equality that Kira used.

The first step is to use the _______ property of equality to combine the constant terms.
1.addition
2.subtraction
3.multiplication
4.division
The second step is to use the _______ property of equality to isolate the variable.
1.addition
2.subtraction
3.multiplication
4.division

Answers

Answer:

1subtraction 2division

Answer:

1 subtraction 2 division

Step-by-step explanation:

You travel 234 miles in 4.5 hours. Find the speed you travel.

Answers

52 mph (like what the other person said ^ you divided the two)

What expression represents the number of squares in terms of the figure number?

Answers

You haven't listed any choices. It's S = (f) + 6 Check it out.
]Let (f) be the figure number. Let S be the number of squares.

Then

S = (f) + 6

PLEASE HELPA yearbook printer charges based on the number of pages printed. Here is a table that shows the cost of some recent yearbooks.

Number of pages 50 100 150 200
Cost 1.55 2.25 2.95 3.65


Which equation gives the cost, y, in terms of the number of pages, x?



A.


y = 0.014x + 49.15


B.


y = 0.014x + 1.55


C.


y = 0.014x + 0.85


D.


y = 58.8x + 0.85

Answers

First, you have to find the slope. 
(3.65 -2.95 )/ (200-150) =m
And then you use like the point-slop form, you can just take a random point and plug it into the equation and solve.
For example,  y-3.65= 0.014 (x-200) and you distribute 0.013x-2.8=y-3.65
Add 3.65 on both sides
y=0.014x +0.85

Sorry if this was confusing.. D: 
C. if you plug the x and y values in the equation balances out and both sides are equal :)

How many yards are in 60 feet

Answers

There are yards that are present in 60 feet will be 20.

We must be aware of the fact that 3 feet equals 1 yard in order to convert feet to yards. By dividing 60 by 3, we can calculate how manyyards there are in 60 feet.

20 yards are equal to 60 feet times three.

Consequently, 20 yards are equal to 60 feet. The idea behind this conversion is that one yard is equivalent to three feet. We may get the corresponding number in yards by multiplying the provided measurement in feet by the conversion ratio of 3. 20 yards are equivalent to 60 feet in this situation.

More about the Algebra link is given below.

brainly.com/question/953809

#SPJ6
there are 20 yards in 60 feet.

do 60/30=20 that is your answer

hope that helps

Three brothers share 2 sandwiches equaly. how much of sandwich does brother get?

Answers

they must split one with the ,2 bros and the other one gets a whole one I think let me check.......
you would each sandwich into 3 or 6 peices
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