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kodGreya [7K]
4 years ago
6

A student provided the steps for solving an equation. Which statement describes the error in the solution?

Mathematics
1 answer:
zhenek [66]4 years ago
8 0
The answer for the exercise shown above is the second option, the option B, which is: B. In step 3, the addition property of equality was applied incorrectly.

 
The explanation is:

 
To solve this problem you must apply the proccedure shown below:. You have the followinwg equation:
<span>
  4(m-3)+5(m+2)=m+9 

 Let's review the steps:

 4m-12+5m+10=m+9 (step 1)
 9m-2=m+9 (step 2)
 8m =7 (step 3)  (There is a mistake, because: 9m-m=9+2</span>⇒8m=11)
<span> m=11/8 This should be the step 4</span>
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In 2017, the price of gas in a certain state changed from $2.24 to $2.56. Calculate the percent of change increase in the price
Eva8 [605]

Answer:

12.5%

Step-by-step explanation:

2.56-2.24 =0.32

By using the rule of three we can find the answer.

we have that 2.56 = 100% so we have to find what percentage 0.32 represents

(0.32*100)/2.56 = 12.5

8 0
3 years ago
Read 2 more answers
Let f(x)=e^x and G(x)=x+6. What are the domain and range of g(f(x))?
Lena [83]

Answer:

Domain and Range of g(f(x)) are 'All real numbers' and {y | y>6 } respectively

Step-by-step explanation:

We have the functions, f(x) = eˣ and g(x) = x+6

So, their composition will be g(f(x)).

Then, g(f(x)) = g(eˣ) = eˣ+6

Thus, g(f(x)) = eˣ+6.

Since the domain and range of f(x) = eˣ are all real numbers and positive real numbers respectively.

Moreover, the function g(f(x)) = eˣ+6 is the function f(x) translated up by 6 units.

Hence, the domain and range of g(f(x)) are 'All real numbers' and {y | y>6 } respectively.

3 0
3 years ago
3 pounds of lawn seeds cover 1800 ft.². How many 4 pound bags are needed to cover 8400 ft.²
vlada-n [284]
1800/3 = 600
Every pound covers 600 square feet
8400/600 = 14
<span>14/4 = 3.5 (round up) so it would become 4.
</span>

You would need 4 bags. 

I hope this helps!

6 0
4 years ago
How many miles can you go on 28 gallons
ArbitrLikvidat [17]

Answer:

depends on how many miles you can go on 1 mile.

6 0
3 years ago
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Which equation represents the circle shown on the graph below.
SVEN [57.7K]

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C

Step-by-step explanation:

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