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
vitfil [10]
3 years ago
6

Find x so the distance between (x,4) and (2x-4,-5) is 15

Mathematics
1 answer:
marshall27 [118]3 years ago
6 0
(2x-4-x)^2 + (-5-4)^2 = 15^2\\ 
(x-4)^2 + (-9)^2 = 225\\
x^2 - 8x + 16 + 81 - 225 = 0\\
x^2 - 8x -128 = 0\\
x= \frac{8б \sqrt{(-8)^2-4*1*(-128)} }{2}=\frac{8б \sqrt{576} }{2}= \frac{8б 24 }{2}= \frac{2(4б 12) }{2}= 4б12 \\ x_1=4-12=-8 \\ x_2=4+12=16
You might be interested in
How many attemps you get everyday . what is the limit. its telling me you are out of answer for now
Katen [24]

Answer:im pretty sure its 2 then you can watch an ad for another answer

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Write the following equation in exponential form
KonstantinChe [14]
It is the last choice. The root power becomes the denominator.
So, a^3/4b^1/4
3 0
3 years ago
Read 2 more answers
Please help Magan recorded the grade-level and instrument of everyone in the middle school
jeyben [28]

Answer:

Probability = \frac{11}{40}

Step-by-step explanation:

Given

See attachment

Required

The probability that a 7th grader selected will play guitar.

From the attachment, we have:

7th\ graders =11+8+8+13

7th\ graders =40

7th graders that can play guitars are:

Guitars = 11

So, the probability is:

Probability = \frac{Guitars}{7th\ graders}

Probability = \frac{11}{40}

5 0
3 years ago
Explain how to find which is greater 1/4 of 12 or 1/3 of 12
stiks02 [169]
1/3 would be greater because 
1/3 of 12= 4 while 
1/4 of 12 = 3
to check your work you would get a calculator (if possible) and divide 3by 12 or 4 by 12 then if you get .33 (divide 3 by 12 like 3/12) its 1/3. if its .25 (divide 4 by 12 like 4/12) its 1/4
4 0
3 years ago
Read 2 more answers
Help i need help with this question
makvit [3.9K]
The answer is the √26 and -√26. Look at the picture for explanation.

3 0
3 years ago
Other questions:
  • A family spent $86 per week for food. This was 20 percent of its weekly outcome. What was its weekly outcome?
    11·2 answers
  • what kind of business organization is easy to start and stop and one person collects all the profits and makes all the decisions
    8·1 answer
  • Ratio of the number of corn tortillas to the number of flour is 4:6. What is the ratio of the number of flour tortillas to the t
    8·1 answer
  • Heelp meeee !!!!!!!!!!
    10·1 answer
  • PLEASE EXPLAIN Find the area and perimeter of the rectangle whose sides are lengths 2x + 3 and 4x
    15·1 answer
  • X square Y - x y square x cube minus x square y.​
    9·1 answer
  • Mia wants to buy a new jacket that costs $40, including taxes. She plans to save $5 each week. How many weeks will it take Mia t
    7·1 answer
  • A. {-3, 7, 8, 12}<br> B. {-8, -3, 5, 7}<br> C. {6, 8, 10, 12}<br> D. {-8, -3, 5, 6, 7, 8, 10, 12}
    9·1 answer
  • Which shows the standard form for three hundred six thousandths ? A. 0.036 B. 0.306 C. 0.360 D. 3.060
    14·1 answer
  • 5) Coach Koehler bought supper for all the participating volleyball players after the tournament. The food was ordered from Food
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!