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
Natalija [7]
2 years ago
7

A.) A new cell phone costs $625. Its sale price is $500. What’s the percent of decrease?

Mathematics
1 answer:
Andrej [43]2 years ago
8 0

Answer:

175$

Step-by-step explanation:

You might be interested in
Lorinda can walk 1.8 miles in 30 minutes. Which proportion can be used to find how many miles she can walk in 45 minutes?
KonstantinChe [14]
Maybe this is the answer 1.8/30 = x/45
8 0
2 years ago
Read 2 more answers
Suppose A is n x n matrix and the equation Ax = 0 has only the trivial solution. Explain why A has n pivot columns and A is row
vovangra [49]

Answer:

Remember, a homogeneous system always is consistent. Then we can reason with the rank of the matrix.

If the system Ax=0 has only the trivial solution that's mean that the echelon form of A hasn't free variables, therefore each column of the matrix has a pivot.

Since each column has a pivot then we can form the reduced echelon form of the A, and leave each pivot as 1 and the others components of the column will be zero. This means that the reduced echelon form of A is the identity matrix and so on A is row equivalent to identity matrix.

4 0
3 years ago
Find the sum.<br> 5+ (-7)
vazorg [7]

Answer:

-2

Step-by-step explanation:

5 + (-7)

5 - 7

-2

Please let me know if something's wrong!

5 0
3 years ago
Which equation, when graphed, has x-intercepts at (8,0) and (-2, 0) and a y-intercept at (0, -48)?
n200080 [17]

Answer:

f(x)=-3(x-8)(x+2)

Step-by-step explanation:

f(8)=-3(8-8)(8+2)=-3×0×10=0

f(-2)=-3(-2-8)(-2+2)=-3×(-10)×0=0

f(0)=-3×(0+8)×(0+2)=-3×8×2=-48

4 0
2 years ago
What is the equation of a line that is perpendicular to the y-axis and goes through point (-1,-8).​
Wittaler [7]
Y= -1

it’s a horizontal line that is perpendicular to the y-axis
4 0
3 years ago
Other questions:
  • Which expressions are equivalent to -9x-21
    10·1 answer
  • Evaluate [7 - (5 - 6(5 - 3) + 4)] + 2<br><br> 27<br> 21<br> 45<br> 12<br> None of the above
    9·1 answer
  • John was born in January. On the first July 4th of his life, his aunt gives him $50 to save for his college education. On every
    11·1 answer
  • The city police are trailing the movements of a suspect through the GPS tracker on his phone. The suspect's apartment is represe
    13·1 answer
  • What is the equation of a line through the points (0, 9) and (3, 0)?
    12·2 answers
  • W<br> Evaluate the following expressions for x = 2.<br> -9.2(4 – x)<br> -9.2(4 - (2)<br> -9.2(2)
    7·2 answers
  • In simplifying the expression 2( 3x + 5) -6, what is the first thing to do?
    6·1 answer
  • Which line shows the graph of y = 4x - 5 reflected over the y-axis?
    11·1 answer
  • How do answer my question
    12·1 answer
  • What’s the answer to this
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!