1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vikki [24]
3 years ago
9

Select the step in the solution that shows the first error.

Mathematics
1 answer:
siniylev [52]3 years ago
8 0

Answer:

Step 2: 20x = 80 + 10x

Step-by-step explanation:

Step 1: 20x - 10 = 80 + 10x

Add 10 to each side

20x - 10+10 = 80+10 + 10x

20x  = 90 + 10x

Step 2: 20x = 80 + 10x   This has the first error

Step 3: 10x = 80

Step 4: x= 8

You might be interested in
Please solve...Thanks
liberstina [14]
Micheal has 40ft of fencing for the rectangular dog run. So the perimeter of the dog run is 40ft.

Perimeter=40ft

The perimeter of a rectangle is:

P=2l+2w

Since we know the length is 5 and the perimeter is 40, we can solve for the width.

P=2l+2w
40=2*(5)+2w
40=10+2w
subtract 10 from both sides
30=2w
divide both sides by 2
15=w

The width of the fence is 15feet.

3 0
3 years ago
What is the least common multiple (LCM) that could be
tensa zangetsu [6.8K]

Answer:

the greatest common factor will be 3

8 0
2 years ago
Please help me ill mark you brainliest and please show your work :)
Nana76 [90]

Answer:

12

Step-by-step explanation:

Multiply both sides of the equation by 8/5.

4x-16=32

Move 16 to the other side

4x=32+16

add numbers on the right side

4x=48

divide both sides by 4

x=12

7 0
2 years ago
The population p (in millions) of Italy from 1990 through 2008 can be approximated by the model p=56.8e^o.oo15t , where t repres
dimulka [17.4K]

As we already have the model that describes the change of the population in Italy in terms of the years that have elapsed, we only have to replace the conditions that are requested in that equation.

Therefore to find the population of Italy in the year 2000 (t = 10 years)  substitute t = 10 in the equation and have:

p = 56.8e^{0.0015*10}\\

p=57.6584 million people

To find the population of Italy in 2008 (t = 18 years)

substitute t = 18 in the equation and have:

p=56.8e ^{0.0015*18}\\

p=58.3545 million people


To predict the population in Italy for 2015 and 2020 with this model, we substitute in the equation t = 25 and t = 30

t = 25

p=56.8e^{0.0015*25}

p=58.9704 million people


 t = 30

p=56.8e^{0.0015*30}

p=59.4144 million people

8 0
2 years ago
Please Answer numbers 4 and 5<br> Due Tomorrow! Please Answer with Explanation ;) thank you
Aleks [24]

Answer:

Median is the middle number

Mean is the average

Step-by-step explanation:

for #4

order the tree heights from the least to greatest and the middle number would be your median. If you have an even amount (no middle) then add the two middle numbers and dived it by 2

for # 5

Add the numbers all up on a calculator then dived by the amount of numbers you added.

Really simple :)

Hope that helps!

7 0
3 years ago
Read 2 more answers
Other questions:
  • 20% of all trucks undergoing a certain inspection will fail the inspection. Assume that 40 trucks are independently undergoing t
    14·2 answers
  • your soccer team isn’t holding a silent auction dinner as a fundraiser to pay for school uniforms. The list shows all the expens
    8·2 answers
  • What best describes the asymptote of an exponential function of the form f(x)=b^x?
    15·2 answers
  • Let v = 3i + 2j and w = 2i + 3j. Sketch v, w, v + w, 2w, and v − w in the plane
    15·1 answer
  • After plotting the data where x represents the length of the side of a polygon, and f(x) represents the area of the polygon, Jac
    5·2 answers
  • Please help and explain how you got the answer
    13·2 answers
  • A margin of error tells us how often the confidence interval estimates the parameter incorrectly. how often a confidence interva
    6·1 answer
  • the table shows the cost of apples, given the number of pounds purchased. Pounds (lb) Cost ($) 2 5.00 5 12.50 8 20.00 11 27.50 A
    6·1 answer
  • an oil company uses cylindrical storage tanks. each tank has a radius of 14ft and is 27ft fall. what is the volume of the tank?
    10·1 answer
  • Question 22 (2 points)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!