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
Elina [12.6K]
3 years ago
8

What is the missing constant term in the perfect square that starts with x^2 -20x

Mathematics
1 answer:
lidiya [134]3 years ago
7 0

Answer:

Missing constant: 100

Step-by-step explanation:

perfect square  (a - b)^2 = a^2 - 2ab + b^2

In this case

20x = 2 * x * 10

and

10^2 = 100

so

(x - 10)^2 = x^2 - 20x + 100

You might be interested in
2.
Sliva [168]

Answer:

Simply subtract the fail rate from 100; the resulting number is the pass rate. So, if you know that 6 percent of students failed, you would subtract: 100 - 6 = 94 percent is the pass rate for the test.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Christy subtracted to find her jogging rate for each time period and said that her rate
bulgar [2K]

Answer:

No, Christy subtracted to find her jogging rate. Not added.

Step-by-step explanation:

The common diffrnece is +4 so she whould have to add. I hope this helps

5 0
2 years ago
-9+{-7-[-(4+1)+(5-9)}-3
maks197457 [2]
I think it is -10 i hope this helps
6 0
3 years ago
An isosceles triangle with equal sides of 5 inches and a base of 6 inches is inscribed in a circle. What is the radius, in inche
nikklg [1K]
Wow this is a doozy! First you have to figure out what is it you are looking for? If you make a dot in the center of the triangle (which is also the center of the circle) and draw a line from the center to one of the vertices of the triangle you have the radius of the triangle and also of the circle. If you draw all 3 radii from the triangle's center to its vertices, you see you have created 3 triangles within that one triangle.  The trick here is to figure out what your triangle measures are as far as angles go.  If we take the interior measures of those 3 triangles, we get that each one has a measure of 120 (360/3=120). So that's one of your angles, the one across from the side measuring 6. Because of the Isosceles Triangle theorem, we know that the 2 base angles have the same measure because the sides are the same. Subtracting 120 from 180 gives you 60 which, divided in half, makes each of those remaining angles measure 30 degrees. So if we extract that one triangle from the big one, we have a triangle with angles that measure 30-30-120, with the base measuring 6 and each of the other sides measuring 5. If we then split that triangle into 2 right triangles, we have one right triangle with measures 30-60-90. Dropping that altitude to create 2 right triangles not only split the 120 degree angle at the top in half, it also split the base side of 6 in half. So our right triangle has a base of 3 and we are looking for the hypotenuse of that right triangle.  WE have to use right triangle trig for that. Since we have the top angle of 60 and the base of 3, we can use sin60=3/x.  Solving for x we have x=3/sin60 which gives us an x value of 3.5 inches rounded from 3.464. I'm not sure what you mean by a mixed number unless you mean a decimal, but that's the radius of that circle.
6 0
3 years ago
The exact vaule of cos(247.5 degrees)
Leni [432]
cos(247.5 deg)=cos( \frac{495deg}{2})
                         =  - \sqrt{ \frac{1+cos(495deg)}{2} }  
                         = -\sqrt{ \frac{1- \frac{ \sqrt{2} }{2} }{2} } 
                         =  \frac{ \sqrt{2- \sqrt{2} } }{2}
8 0
3 years ago
Other questions:
  • 20 characters you happy now?
    14·1 answer
  • The expression 3r - 6 can be written as _____. 3(r - 2) 3(r - 6) 3(3r - 6) user: 18 - 2[x (x - 5)] user: simplify 18 - 2[x (x -
    7·1 answer
  • 0 = x^3-8<br> Help me with this problem
    6·1 answer
  • Which monomial is a perfect cube?<br><br> 16x6<br> 27x8<br> 32x12<br> 64x6
    15·2 answers
  • What is 5.63 when rounded to the nearest whole number?
    8·2 answers
  • Rocky simplified an expression in three steps, as shown:
    14·2 answers
  • Timothy is trying to solve the following equation for his math homework.
    10·1 answer
  • A Square yellow rug has a red square in the center. The side length of the red square is X inches. The width of the yellow band
    15·1 answer
  • Help me please I have no more time for this work to graded
    7·1 answer
  • Please please help me
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!