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nekit [7.7K]
3 years ago
6

Homework Progress 10 plify 2(x + 7) + 3(x + 1)

Mathematics
1 answer:
Alexxx [7]3 years ago
3 0

Answer:

5x+17

Step-by-step explanation:

2x+14+3x+3=5x+17

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Total world consumption of iron was approximately 900 million tons in 1993. If consumption had increased by 2.5% each year and t
Lilit [14]

Step-by-step explanation:

We can model the annual consumption of iron by the equation

c = 900 million tons x 1.025^n, where

n is the number of years after 1993 and

c is the consumption for that year.

An estimate for the total consumption of iron can now be obtained by integrating this equation with respect to a dummy variable, x from 0 to n.

C = 900*10^6* \int\limits^n_0 {1.025^x} \, dx

This equation simplifies to

C = 900 million tons x (1.025^n - 1) / ln(1.025), where

x is a dummy variable and

C is the total consumption of iron n years after 1993.

Let R be the amount of iron remaining at n years after 1993, so

R = 480 billion tons - C

R = 480 billion tons - 900 million tons x (1.025^n - 1) / ln(1.025)

We need to find the value of n when R is 0, so

0 = 480 billion tons - 900 million tons x (1.025^n - 1) / ln(1.025)

Simplify this equation to obtain

n = 107.4

So the iron will run out in the year 1993 + 107 = 2100

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3 years ago
If there are 205 students in the school, which is the best estimate of the number of students that are in the 5th grade?
Mila [183]

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Step-by-step explanation:

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Sorry Man I need to see the graph
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Hiii please help! i’ll give brainliest if you give a correct answer tysm!
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3 years ago
To ________ a formula or equation for a specified variable means to rearrange it so that the variable appears alone on one side
julia-pushkina [17]
Hello There! ^_^

Your question: To ________ a formula or equation for a specified variable means to rearrange it so that the variable appears alone on one side of the equal sign.

Your answer: To solve <span>a formula or equation for a specified variable means to rearrange it so that the variable appears alone on one side of the equal sign.
</span>
The answer is solve to fill up the blank.

Hope this helps!





7 0
3 years ago
Read 2 more answers
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