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Alekssandra [29.7K]
3 years ago
8

Twice the sum of six "x" and seventy eight.

Mathematics
1 answer:
kogti [31]3 years ago
6 0

Answer:

2(6x+78)

Unless it's the exact number. You hadn't specified what x is.

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4.009 x 10-3 in decimal form
katrin2010 [14]

Answer:

the 3 represent a one thousand

so that means 4.oo9* 1000 = =49

4 0
3 years ago
the population of alaska is approximately 6.5 * 10^(5) people the populatio of illinois's is about 1.3 * 10^(7)people. how many
Wewaii [24]

Answer:

20 times greater

Step-by-step explanation:

Given the following

Population of alaska = 6.5 * 10^(5) people

Population of illinois's = 1.3 * 10^(7)people.

To know the number of times population of Illinois in the population of Alaska, we will take their population ratio;

Ratio = Population of illinois's /Population of alaska

Ratio = 1.3 * 10^(7)/6.5 * 10^(5)

Ratio = 0.2 * 10^7-5

Ratio = 0.2 * 10^2

Ratio = 20

Hence the population of Illinois is 20 times greater than population of alaska

8 0
3 years ago
Peter has 100 dollars. His mom gives him x dollars more. Write an expression to represent the situation.
denis23 [38]

Answer:

100+x

Step-by-step explanation:

Peter starts out with 100 dollars and then gets X more meaning we have to add X to what he originally had and that looks like this 100+x

I hope this helps and please don't hesitate to ask if there is anything still unclear!

5 0
3 years ago
Read 2 more answers
The look out point of a lighthouse is 30 feet above sea level. A boat is 20 feet away from the base of the lighthouse. What is t
olya-2409 [2.1K]
Call the angles of depression D.

then tan(D)=20/30, or I

arctan(tan(D)) = arctan(⅔)

D=33.690. A is the answer

your calculator probably uses tan^-1 rather than arctan
8 0
3 years ago
Read 2 more answers
F(x)=2x + 1 and g(x) = -3x+4. Find f(x) + g(x)
Aneli [31]
To do this, simply add the 2 functions-as it says:

(2x+1) + (-3x+4)
2x+1-3x-4
-x-3

Your answer is -x-3
5 0
3 years ago
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