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
Zina [86]
3 years ago
7

The difference of the square of a number and 5 is equal to 4 times that number. Find the negative solution.

Mathematics
2 answers:
Alexeev081 [22]3 years ago
8 0

Answer:

x=-1 or x=5

Step-by-step explanation:

let the number be 'x'.

According to the statement given above:

x^2-5=4x

or

x^2-4x-5=0

Factorizing the quadratic equation for 'x'

x^2+x-5x-5=0

Taking common from the equation:

x(x+1)-5(x+1)=0\\(x+1)(x-5)=0\\(x+1)=0, (x-5)=0\\x=-1,x=5

The solution of the equation is x=-1 or x=5

ivann1987 [24]3 years ago
8 0

Answer:

its -1 because i know it

Step-by-step explanation:

You might be interested in
Type the correct answer in the box. Use numerals instead of words.
iragen [17]
X= 7 don’t know why i have to keep typing for it to post
7 0
3 years ago
Read 2 more answers
Does 2, square root of 2, and square root of 2 make a right triangle
garik1379 [7]
Yes it does because in order to find out if a triangle is a right triangle, you can use the Pythagorean theorem.
sqrr 2 squared + sqrr 2 squared= 2 squared
simplify this:
2+2=4
because the equation is correct, this can make a right triangle
8 0
3 years ago
If a square has an area of 324 ft what is the length of each side
AlexFokin [52]

Answer:

162

Step-by-step explanation:

324/2 because a square has sides that are all equal, so the area is 2 times the length of a side

8 0
2 years ago
Read 2 more answers
12 over 50 as a decimal
ivanzaharov [21]
I believe the answer is 0.24
4 0
3 years ago
Read 2 more answers
A jet ski costs $925 and depreciates by 15% each year. How much will
ivann1987 [24]
Initial cost of the jet ski = $925
Percentage of depreciation per year = 15%
Number of years after which the cost of the jetski has to be determined = 7
Then
Depreciated Value = Initial cost( 1 - percentage of depreciation) ^number of years
                              = 925( 1 - 15%)^7
                              = 925( 1 - 15/100)^7
                              = 925(1 - 0.15)^7
                              = 925(0.85)^7
                              = 925 *(0.85)^7
                              = 925 * 0.3206
                              = 296.53 dollars
So the depreciated cost of the jet ski after 7 years will be $296.53
6 0
3 years ago
Other questions:
  • What is 6.7 in word form
    8·2 answers
  • What is the solution to the system of linear equations?<br> 2x+4y=38<br> 10x+3y=105
    14·2 answers
  • Is it true that (-3b)^4=12b^4
    11·2 answers
  • CAN SOMEONE HELP ME PLEASE!
    8·1 answer
  • Leslie surveyed her classmates to find out which instrument they like best. She wants to make a circle graph to display the resu
    15·2 answers
  • Rachel loaned Adam $8510 at an interest rate of 13 % for 2 years. How much will Adam pay Rachel at the end of 2 years? Round you
    6·1 answer
  • Find the TOTAL balance of an account that has $800 and earns 4.25% simple interest for 6 years.
    8·1 answer
  • Quick question um doing this assignment what numbers are divisible by 4 and 6 ?
    9·2 answers
  • Read the question and answer. Ignore the c please, its incorrect.
    11·1 answer
  • What is the vertical change from Point A to Point B?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!