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
shepuryov [24]
3 years ago
12

Help its due in 15 mins ​

Mathematics
1 answer:
Anton [14]3 years ago
8 0

Answer:

\sqrt{44} = 2\sqrt{11}

Step-by-step explanation:

Apply pythagorean theorem:

ABD is a right triangle with angle ADB = 90

hence AD = \sqrt{AB^{2} - BD^{2}  } where BD = 10 because it is half of BC

AD = \sqrt{12^{2}-10^{2}  } = \sqrt{44} = 2\sqrt{11}

You might be interested in
Write the point slope equation of the line through (7,-2) with slope of 1/2.
ahrayia [7]

Answer:

y = 0.5x - 5.5

Step-by-step explanation:

slope = 0.5, so this is the x coefficient.

y intercept = -2 - (7 x 0.5) = -5.5

4 0
3 years ago
a ford truck enters a highway and travles uniform speed of 50 mph. half an hour later a jaguar enters the highway at the same ju
mixer [17]

Answer:

5.5 hours

Step-by-step explanation:

We have that the distance is given by:

d = v * t = 50 mph * 1/2 h = 25 miles

The relative speed is given by:

 vr = 55 mph - 50 mph = 5 mph

Now the time required to reach

 would come being:

t = t '+ d / vr

we know that t '= 1/2 h, replacing:

t = 1/2 h + 25 mi / 5 mph

t = 1/2 h + 5 h

t = 5.5 h

Therefore, the required time is 5.5 hours.

8 0
3 years ago
Find the center and the radius of the circle x^2+y^2+6x-4y-12=0 show your work
andriy [413]

Answer:

see explanation

Step-by-step explanation:

the equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

To obtain this form use the method of completing the square on both the x and y terms

rearranging

x² + 6x + y² - 4y = 12

x² + 2(3)x + 9 + y² + 2(- 2)y + 4 = 12 + 9 + 4

(x + 3)² + (y - 2)² = 25 ← in standard form

with centre = (- 3, 2) and r = \sqrt{25} = 5


4 0
4 years ago
How to ESTIMATE the QUOTIENT 74.3 ÷ 8
GaryK [48]
You divide and simplify and get9.2875
7 0
3 years ago
HELPPPP Select the figure with four lines of symmetry and a 90° angle of rotational symmetry.
Elis [28]

Answer:

b

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • What is 49 times 49! Plz help me.
    12·1 answer
  • How do I find the surface area I have been doing this for hours​
    7·1 answer
  • Calculate the average rate of change for the function f(x)=x^4+3x^3-5x^2-2, from x=-1 to x=1
    5·1 answer
  • Simply Each Expression ​
    6·2 answers
  • Graph the line with slope 3/5 and y-intercept -2
    8·1 answer
  • Which expression can be used to find 32% of 130?
    15·2 answers
  • He slopes of lines PQ and P’Q’ can be determined using the formula m = StartFraction v 2 minus v 1 Over x 2 minus x 1 EndFractio
    14·1 answer
  • HELP ASAP!!!! 25 POINTS + BRAINLIEST!!!!!!!
    13·1 answer
  • Which inequality represents the sentence?
    5·2 answers
  • A membership committee of three is formed from four eligible members. Let the eligible members be represented by A, B, C, and D.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!