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
nirvana33 [79]
3 years ago
6

What is the justification for each step in the solution of the equation?

Mathematics
1 answer:
otez555 [7]3 years ago
7 0

23x-13=2(x+2)

First you would distribute the 2 into the parenthesis

It will look like this after: 23x-13=2x+4

Then you would subtract 2x on both sides because u have to get the x's on one side

It will look like this after:21x-13=4

Then you would add 13 to both sides

It will look like this after: 21x=17

Then you would divide 21 on both sides

Your final product is 21/17


You might be interested in
Can somebody plz help and try answering these word problems correctly thanks!
Nookie1986 [14]

Answer:

21. is 18 dollars

22. is 75 dollars

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
A population has a mean of 300 and a standard deviation of 70. Suppose a sample of size 125 is selected and is used to estimate
Mrrafil [7]

Answer:

a:  0.8884

b: 0.9934

Step-by-step explanation:

We have µ = 300 and σ = 70.  The sample size, n = 125.  

For the sample to be within 8 units of the population mean, we would have sample values of 292 and 308, so we want to find:

P(292 < x < 308).

We need to find the z-scores that correspond to these values using the given data.  See attached photo 1 for the calculation of these scores.

We have P(292 < x < 308) = 0.8884

Next we want the probability of the sample mean to be within 17 units of the population mean, so we want the values from 283 to 317.  We want to find

P(283 < x < 317)

We need to find the z-scores that correspond to these values.  See photo 2 for the calculation of these scores.

We have P(283 < x < 317) = 0.9934

5 0
3 years ago
What is the approximate area of the shaded sector in the circle shown below?
Anton [14]

Answer:

The approximate area is A) 5.09cm²

Step-by-step explanation:

Area of a Circle = πr²

r = 1.8

Plug in our values

π(1.8cm²)

Evaluate the area of the entire circle

a = π(1.8cm²)

a = π(3.24cm)

a = 10.179cm²

Area of a sector, with the area of the circle of the sector being a = theta/360 * a

Evaluate the area of the sector

180/360*10.719cm²

0.5 * 10.179cm²

5.0895cm²

Round the value up

5.09cm²

3 0
2 years ago
There are three numbers for the combination to the store’s safe. The first number is 14.The other two numbers can be multiplied
Oduvanchick [21]
1, 24; 2, 12; 3, 8; 4, 6. mix and match for the codes but that's like 100+ combinations and I don't have that kind of time sorry
3 0
3 years ago
(98 points) BEST EXPLANATION + CORRECT ANSWER GETS BRAINLIEST!
lidiya [134]
It's a vertical angle. Add the two angles 143+33=176
then divide by 2 , 176÷2=88

the answer is C. 88°
4 0
3 years ago
Read 2 more answers
Other questions:
  • the manufacturing cost of a cell phone was $124 cellars first marked up the cost by 20% sales were poor , so sellers decreased t
    5·1 answer
  • PLLLLZZZZ HELP!!!!!!!!
    8·1 answer
  • HELP ME PLS WITH THIS QUESTION REAL QUICK.
    12·1 answer
  • Dorris has 3 books weighing 2 kilograms each and one container weighing 4 kilograms in a box. How much does the box weigh in kil
    12·1 answer
  • Solve x2 − 7x = −13.
    13·1 answer
  • A ladder is 10 feet long and rests on a wall. The base of the ladder is 5 feet from the wall. Determine how high the ladder touc
    13·2 answers
  • Find the polynomial. (3m − 2n) and (4m − n) are the factors of
    14·2 answers
  • Simplify the expression.
    13·1 answer
  • A culture of bacteria doubles every two hours. If there are 100 bacteria on the first 2 hours,
    15·1 answer
  • What is 3 times 1/3 and subtract 5
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!