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
alukav5142 [94]
3 years ago
5

Which of the following equations shows how substitution can be used to solve

Mathematics
1 answer:
maxonik [38]3 years ago
3 0

Answer:  Choice B)

2x+5(2x+3) = 3

============================================

Reasoning:

We start with the second equation 2x+5y = 3

Since y = 2x+3 from the first equation, we can replace every copy of y with (2x+3). This replacement is valid because y and 2x+3 are the same.

So that's how we go from 2x+5y = 3 to 2x+5(2x+3) = 3

This replacement is done to get rid of the y variable, and it allows us to solve for x later on.

You might be interested in
i kind of know its C need 2nd opinion A tire manufacturer took a random sample of 50 tires and found that 3 were defective. In a
den301095 [7]

It's kind of not C.

Solve this proportion for 'x':

                                    3/50 = x/2400

Hint: Cross-multiply the proportion, then do what you need to do.

6 0
3 years ago
a recent survey of 300 pet owners that have either cats or dogs reveals that two thirds are dog owners. if there are 20,000 regi
alexandr1967 [171]

40,000 Dog owners :3


7 0
3 years ago
Math 100 points ill give brainliest as well
Lelechka [254]

Answer:

it is the answer. let me do research and I will get answer

8 0
3 years ago
Read 2 more answers
The graph shows the amount of money paid when purchasing bags of candy at the zoo:
s2008m [1.1K]

Answer:

$2 because the x axis is bags of candy 1 and the y axis is the cost 2 therefore 1 bag of candy cost $2 and 2 bags of candy cost $4

6 0
3 years ago
Solve the letter f question please
olga2289 [7]

Answer:

  3 79/100

Step-by-step explanation:

  3\dfrac{1}{5}+2\dfrac{1}{5}\div\dfrac{5}{11}-3\dfrac{2}{5}\times\left(-1\dfrac{1}{4}\right)\qquad\text{given}\\\\=\dfrac{16}{5}+\left(\dfrac{11}{5}\cdot\dfrac{11}{5}\right)-\left(\dfrac{17}{5}\cdot\dfrac{5}{4}\right)\\\\=\dfrac{16}{5}+\dfrac{121}{25}-\dfrac{17}{4}=\dfrac{320+484-425}{100}=\dfrac{379}{100}\\\\=\boxed{3\dfrac{79}{100}}

8 0
2 years ago
Other questions:
  • Help me do this please
    7·1 answer
  • Mary sells fruit with four of her friends. If the earnings are divided evenly, how
    9·1 answer
  • 81. Which sum below can be expressed as a
    7·1 answer
  • How to solve this equation?
    6·1 answer
  • The auto rental company rented 8,669 autos last month. This month it rented 3,742 more autos than it did last month. About how m
    13·1 answer
  • The width of a rectangle is 2 units less than the length. The area of the rectangle is 63 units. What is the length, in units, o
    6·1 answer
  • Perform the indicated operation and write the result in the form a + bi i^100
    13·1 answer
  • What two patterns is in the table show
    12·1 answer
  • Please I need help asap
    5·2 answers
  • Write the standard form of the equation of the line through the given point with the given slope.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!