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
BartSMP [9]
3 years ago
9

Which equation is an identity?

Mathematics
1 answer:
Alecsey [184]3 years ago
6 0

Answer:

D

Step-by-step explanation:

A and B are not, and C doesnt work so D

You might be interested in
A bag contains 10 marbles: 4are green, 2are red, and 4 are blue. Carmen chooses a marble at random, and without putting it back,
kupik [55]

Answer:

2/15

Step-by-step explanation:

There is a 4/10 probability that she chooses blue the first time, but the second time it is a 3/9 chance because she didn't put the marble back so there are 9 marbles in total, 3 blue ones.

4/10 x 3/9 = 2/5 x 1/3 = 2/15

I hope this helps :)

Edit: Messed up the multiplication, whoops!

4 0
3 years ago
Read 2 more answers
PLEASEEE HELPPP<br><br> Solve for x:
m_a_m_a [10]

Second option, just do Pemdas backwards.

5 0
3 years ago
Besides knowing every corresponding side and angle of one triangle is congruent to another, how could you prove that two triangl
Citrus2011 [14]

Step-by-step explanation:

Congruent means the same. You can prove that the two triangles are congruent by the measurements and also if they look the same. You can also see if parallelograms are congruent by seeing if they are the same. They also have to mirror the image of the other. Your welcome :)

7 0
3 years ago
When renting a limo for prom, the number of people varies inversely with the cost per person. Originally there were 4 people and
ioda

Answer:The new cost per person= $19 when there are 12 people

Step-by-step explanation:

Step 1

Let Number of people be rep as N

And Cost per person = C

such that the relationship of  number of people which varies inversely with the cost per person is given as

N∝ 1/C

Introducing constant of proportionality, k, we have that

N= K/C

such that when there were 4 people the cost per person was $57, K would be

N= K/C

4 = K /57

k= 57 X 4

k=228

Step 2

Therefore If the number of people changed to 12, cost per person would be

N= K/C

12= 228 / C

C= 228/12

C= 19

The new cost per person= $19 when there are 12 people

4 0
3 years ago
Sarah rolls a die. What is the chance of her rolling a 4?!
Mariulka [41]

depends on the type of dice, some have many sides . how many rolls, how many seconds until it stops rolling, which quantiative set of dice rolls do you have that you use to verify the accuricy of predicitons.

In short, not sure.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Help will mark brainliest!
    15·2 answers
  • If f(x)= 3x-1 and g(x)=2x-3, for which value of x does g(x)= f(2)
    8·1 answer
  • Y = x^2+ 7x - 5 can be written in the form y = (x + a)^2+b
    10·1 answer
  • When c=_6 and x=2 x-8c
    7·1 answer
  • Please please help, need this done by 1:45!!!!
    5·1 answer
  • The cylinder’s diameter and height are both 39.2 millimeters. What is the surface area of this cylinder?
    13·1 answer
  • The course grade in a statistics class is the average of the scores on five examinations. Suppose that a student's scores on the
    15·1 answer
  • What is <br><br><br> x+2/4 = 5/3
    8·2 answers
  • A | 12300| 24620| 35711| 102345| 98705<br>a×3 <br>a×9​
    8·1 answer
  • One root of a third degree polynomial function f(x) is -5 + 2i. Which statement describes the number and nature of all
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!