The amounts of paper waste generated in a region during two years were 41,300,000 tons and 50,500,000 tons. What was the total paper waste generated over these two years in the region, expressed in scientific notation?

Answers

Answer 1

Answer: So first you need to add the two years together to get 91,800,000 from there you can start to turn it into scientific notations. First start out by putting an imaginary decimal point at the end so you have 91,800,000. From there you need to move the decimal next to the 9 so 7 spots to the left. This means that when you are converting back from SN you would go 7 spots to the right. Therefore when you write this in SN you will have 10 to the power of positive 7.Now that you have the number and the exponent you just put them together and you have 9.18 x 10^7 . I hope this helped and if you have any questions about how I got this answer feel free to message me.

Answer 2

Answer: Just add 41,300,000 to 50,500,000. That is 91,300,000.00 tons. Scientific Notation just moves the decimal point to the beginning. So it would be 9.13*10^7

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Use properties to find the sum or product 8×51

Answers

8 ×51 = 8(50+1) = 8×50+08*1=400 + 08=408

Answer:

$8 \cdot 51 = 408$

Step-by-step explanation:

use properties to find the sum or product 8×51

To use properties lets break 51 as 50 +1

8 times 51

$8(50+1)$

Now we use distributive property , Using this property we distribute 8 inside the parenthesis

8 times 50 is 400

8 times 1 is 8

$400+8 = 408$

So $8 \cdot 51 = 408$

Draw coins in two ways to show 57¢ Describe how to chose the coins for each way

Answers

1 way: 2 quarters and 7 pennies

2 way: 5 dimes 1 nickel and 2 pennies

1) 1 quator and 32 pennies
2) 40 dimes and 17 pennies
HOPE THIS HELP:)

Someone please tell me what this is, the question is what is the slope of this line ?

Answers

Answer: slope ≈0.7

Step-by-step explanation:

The formula for finding the slope of a line is given as :

slope = $(y_(2)-y_(1))/(x_(2)-x_(1))$

$x_(2)=9$

$x_(1)=-3$

$y_(1)= -5$

$y_(2)= 3.6$

substituting into the formula we have:

slope = $(3.6-(-5))/(9-(-3))$

slope = $(8.6)/(12)$

slope ≈0.7

Answer:2/3

Step-by-step explanation:

rise/run. y=2 x=3

In a traffic survey, some bikes buses and cars were recorded. 70% of the vehicles were cars and 17% were buses. What percentage were bikes? Show me your work please!

Answers

Percent is calculation of quantity per 100 quantity of other thing. The percentage of bikes out of of total surveyed vehicles was 13%

How to find the percentage from the total value?

Suppose the value of which a thing is expressed in percentage is "a'

Suppose the percent that considered thing is of "a" is b%

Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).

Thus, that thing in number is

$(a)/(100) * b$

Assume that total T number of vehicles were surveyed.

Then, as it is given that 70% of the vehicles were cars and 17% were buses.

So, number of cars = $(T)/(100) * 70 = (7 * T)/(10) = 0.7 * T$

Similarly, the number of buses = $(T)/(100) * 17 = 0.17 * T$

Thus, number of bikes = Total vehicles - number of cars and buses

Number of bikes = T - 0.7T - 0.17T = T(1 - 0.87) = 0.13T

Taking its percentage with total vehicles, let it be x% of total vehicles, then

$0.13T = (T)/(100) * x\n\n\text{Multiplying 100/T on both the sides}\n\n13 = x\nx = 13$

(we could have used short cut that total there is 100%, since number of cars = 70% of total, number of buses = 17% of total, thus

total vehicle's percent being bike = all vehicle (100%) - percent of cars - percent of buses) = (100 - 70 -17)% = 13% )

Thus, the percentage of bikes out of of total surveyed vehicles was 13%

Learn more about percentage here:

brainly.com/question/11549320

Answer:

13%

Step-by-step explanation:

There are three groups: bikes, buses, and cars. The percentages of each must add up to 100%.

bikes + buses + cars = 100%

bikes + 17% + 70% = 100%

bikes + 87% = 100%

bikes = 13%

Use parentheses to make each number sentence true 1+2×3+4=21

Answers

(1+2)(3+4)
1+2=3
3+4=7
7•3=21
There is an invisible multiplication sign between the two parentheses :).

Identify the domain of the function shown in the graph.

Answers

Answer:

x is all real numbers

Step-by-step explanation:

Domain is the set of all values of x for which the function is defined.

Range is the set of all y values for which the function is defined

From the given graph , we have graph for all values for x.

The graph is continuous and smooth. there is no restriction for x.

So , the domain is all real numbers

x is all real numbers

C. x is all real numbers

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