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
Nostrana [21]
3 years ago
6

Which equation is an identity?

Mathematics
1 answer:
spayn [35]3 years ago
3 0
7z + 10 - z = 8z - 2(z - 5)
7z + 10 - z = 8z - 2z + 10
6z + 10 = 6z + 10
6z - 6z = 10 - 10
0 = 0

Therefore, 7z + 10 - z = 8z - 2(z - 5)
You might be interested in
What is the value of each expression in simplest form?<br> 2 1/2 divided by 4 3/4
Tanya [424]

Answer:

Its something

Step-by-step explanation:

2 1/2 is uh pretty cool

7 0
3 years ago
Read 2 more answers
Ava's birthday cake is about 11 7/10 cm long. her candles stick up from the cake an additional 5 4/10 cm. what was the total hig
Virty [35]

Total height of the cake and the candles is 17.1 cm

Step-by-step explanation:

  • Step 1: Convert the mixed fractions into decimal expressions.

11 7/10 cm = 117/10 = 11.7 cm

5 4/10 cm = 54/10 = 5.4 cm

  • Step 2: Find total height of the cake and the candles

Total height = 11.7 + 5.4 = 17.1 cm

3 0
4 years ago
Read 2 more answers
Solve the following system of equations.
Elan Coil [88]

Answer:

(2,-3)

Step-by-step explanation:

I am not sure if you meant the first equation to be y or -y.  I solved it as y.

y = x-5                       -x -3y =7

I am going to take the second equation and write it as x =

-x - 3y = 7  Give equation

-x = 3y +7   Add 3y to both sides

x = -3y-7  Multiplied each term in the equation by -1 so that x could be positive

I am going to substitute -3y-7 for x in the first equation up above

y = x - 5

y = -3y -7 - 5  Substitute -3y-7 for x

y = -3y -12  Combined -7-5

4y = -12  Added 3y to both sides

y = -3  Divided both sides by 4.

I now know that y is -3, I will plug that into x = -3y-7 to solve for x

x = -3(-3) -7

x = 9-7   A negative times a negative is a positive

x = 2

5 0
2 years ago
Arrange in order from least to greatest 0.38, 0.3886, 0.3722
My name is Ann [436]
Least to greatest
0.3722, 0.38, 0.3886
4 0
4 years ago
Read 2 more answers
In the triangle ABC the measure of angle A is 2X +3 the measure of angle B is 4X +2 in the measure of angle C is 2X -1what are t
kvasek [131]

Answer:

hope you got a good grade o whateva

Step-by-step explanation:

im just trna get more questions

8 0
3 years ago
Other questions:
  • A ray that contains a point that is equidistant from both sides of the angle. *
    9·1 answer
  • The graph of f(x) = (0.5)x is replaced by the graph of g(x) = (0.5)x − k. If g(x) is obtained by shifting f(x) down by 5 units,
    10·1 answer
  • If there was a circle and i wanted to find out the area.
    5·1 answer
  • Which of the following correctly expresses the number below in scientific notation? 0.000332
    8·1 answer
  • The volume of air in a balloon is represented by the function v(n) = ne?, where r is the radius of the balloon, in
    7·1 answer
  • Bernie has to write a report. He will write 3/8 of the report on Monday and 1/3 of the report on Tuesday. How much of the report
    6·1 answer
  • HELP ME PLZ QUICKLY
    10·2 answers
  • 3.41 rounded to the nearest tenth please help
    8·2 answers
  • Carisssa's favorite cereal box is 14.5 inches tall 9.5 inches wide and 1.5 inched deep. What is the volume of the cereal box?
    9·1 answer
  • Khan Academy Question
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!