Math please help!

Mathematics

1 answer:

Simora [160]3 years ago

8 0

The answer to your question is A

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The researchers have also determined that the current rate of the rise in water level is twice the 1880 to 2009 rate. assuming t

Elden [556K]

Answer:

x ≥ 2009
3.2x -6222.8
257.2 mm
year 2100

Step-by-step explanation:

1. The problem statement tells you the function applies for year values (x) 2009 and later. The domain is real numbers greater than or equal to 2009.

2. We can use the distributive property to eliminate parentheses:

3.2(x -2009) +206 = 3.2x -6428.8 +206

= 3.2x -6222.8

3. Put 2025 in the equation and do the arithmetic

g(2025) = 3.2·2025 -6222.8 = 257.2 . . . . mm

4. Put this value of level rise in the equation and solve for x.

g(x) = 3.2x -6222.8

500 = 3.2x -6222.8 . . put 500 mm where g(x) is in the equation

6722.8 = 3.2x . . . . . . . add 6222.8

x = 6722.8/3.2 = 2100.875

The water rise will be equal to about half a meter late in the year 2100.

8 0

4 years ago

Alex wrote checks on Tuesday for $35 and $45. He also made a deposit in his checking account of $180. Find the overall change in

Natalija [7]

He deposited a total of $180.

Wrote two checks that totaled $80

x=180-80

180-80=100

Therefore, he would have $100 in his checking account after the two checks.

8 0

3 years ago

The average weight of 7 potted plants is 23 pounds. An 8th potted plant is added to the pallet,

cluponka [151]

Answer:

The weight of the 8th plant is 39lb

Step-by-step explanation:

Given:

Average Weight of 7 plants = 23lb

Average Weight of 8 plants = 25lb

Required:

Weight of the 8th plant