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
Makovka662 [10]
3 years ago
10

Can someone pls help? ab to fail geometry. any help is nice.

Mathematics
1 answer:
Mamont248 [21]3 years ago
7 0
By the law of cosines, the angle C satisfies

8.77^2=2^2+9^2-2\times2\times9\times\cos C

which reduces to

\cos C=0.2246\implies C=\arccos(0.2246)\approx1.34422\text{ rad}

which converts to approximately 77 degrees (this can be done my multiplying by 180 and dividing by pi).
You might be interested in
If a square is dilated by a factor of 2 what is the measure of each individual angle
vodomira [7]

Answer:

4:1

Step-by-step explanation:

If the side length x is dilated to 2x, the area x² will dilate to (2x)² = 4x², which is 4 times the original x².

6 0
3 years ago
Solve the compound inequality.<br> 3x + 1 &lt;4 or 9x &gt; 31
WINSTONCH [101]

Answer:

Step-by-step explanation:

3x < 4 - 1   or x > 31/9

3x < 3 or x > 31/9

x < 1  or x > 31/9

7 0
3 years ago
Y=x+2 2x-y=-4 Solve the systems of equations
larisa86 [58]

Answer:

Step-by-step explanation:

Given that,

y=x+2 equation 1

2x-y=-4 equation 2

This is a simultaneous equation.

Substitute equation 1 into equation 2

2x-y=-4. Since y=x+2

2x-(x+2) = -4

2x-x-2 = -4

x-2 = -4

x = -4+2

x = -2

Also from equation 1

y=x+2

Since x=-2

y=-2+2

y=0

Then, solution (x, y) = (-2,0)

4 0
3 years ago
Read 2 more answers
What is tan angle QTR if line PR is tangent to circle T at Q, and TS = 1 cm?
lions [1.4K]
Tangent = opposite / adjacent

In the diagram:
TQ is the short leg or the opposite
QR is the long leg or the adjacent
TR is the hypotenuse. TS is part of the hypotenuse.

Tan(QTR) = TQ / QR

TS = 1 ; TQ = TS  so, TQ = 1

Tan(QTR) = 1/QR

I think the answer is C.RQ
3 0
3 years ago
Fastest way to solve this? NOT LOOKING FOR THE ANSWER with logical explanation please about how to solve it.
White raven [17]

Answer:

Distance of Tunnel is 500 meters + Train travel rate is 20 meters per second = 25 seconds to pass through the tunnel only therefore the outstanding balance of 35 seconds x 20 meters per second =600 meters Train

Step-by-step explanation:

Total of length of train 600 meters and tunnel (500 meters) is 1,200 meters +30 seconds = TR of 20 meters per second

7 0
2 years ago
Other questions:
  • What is x+ (5x-18)+90 degrees
    13·1 answer
  • How many square feet of tile is needed for a 24 foot x 24 foot room?
    6·1 answer
  • The vertices of a triangle are P(-3,8), Q(-6,-4), and R(1,1). Name the vertices of the image reflected in the X-axis
    15·2 answers
  • In the notation "s(x) = ...," what does "s(x)" represent?
    6·2 answers
  • Can u plz show work?Only need 84
    14·1 answer
  • If 604-72=___,then 532+___=604.Explain the process of checking your work.
    9·2 answers
  • NEED ANSWERS ASAP!! Help Pls I’d really appreciate it :)
    14·2 answers
  • What are the coordinates of the root of the equation x^2+4x+3=0
    9·1 answer
  • What are the coordinates of the vertex?
    11·2 answers
  • Please help me out with this I don’t understand it
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!