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erik [133]
3 years ago
15

A b c or d? please i need help

Mathematics
2 answers:
butalik [34]3 years ago
8 0

Answer:D

D

Step-by-step explanation:D

denpristay [2]3 years ago
3 0

Answer:

The answer  is D.

Step-by-step explanation:

:D

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Quadrilateral ABCD is inscribed in a circle with angle measures m∠A = (11x − 8)°, m∠B = (3x2 + 1)°, m∠C = (15x + 32)°, and m∠D =
dimulka [17.4K]

Answer:

No for all of the 4 values

Step-by-step explanation:

The sum of the internal angles of a quadrilateral is always 360°, so we have that:

m∠A + m∠B + m∠C + m∠D = 360

11x - 8 + 3x2 + 1 + 15x + 32 + 2x2 - 1 = 360

5x2 + 26x - 320 = 0

Solving the quadratic function using Bhaskara's formula, we have:

Delta = 26^2 + 4*5*320 = 7076

sqrt(Delta) = 84.12

x1 = (-26 + 84.12)/10 = 5.81

x2 = (-26 - 84.12)/10 = -11.01 (this value will generate negative angles, so it is not valid).

Now, finding the angles, we have:

m∠A = 11*5.81 - 8 = 55.91°

m∠B = 3*(5.81)^2 + 1 = 102.27­°

m∠C = 15*5.81 + 32 = 119.15°

m∠D = 2*(5.81)^2 - 1 = 66.51°

As all these values are different from the values shown, the answer is No for all of them.

8 0
3 years ago
Solve each system by graphing:<br> Y= 1/4x-4 <br> Y= -x+1
AlexFokin [52]
Do you have a graphing calculator?  if yes than all you have to do is hit the y= button in the top left corner and type 1/4x-4 for y1. then you need to hit graph in the top right corner.  repeat this process substituting 1/4x-4 and -x+1
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3 years ago
El número que falta en<br> (–15) × ____ × 8 × (–4) = –4320, es:
11Alexandr11 [23.1K]

Answer:

-9

Step-by-step explanation:

The missing number will be labeled as x.

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I think it's D because you can't have negative minutes and after 8 minutes you can't go any deeper than 0 inches.
8 0
2 years ago
Which value of c would make the following express completely factored? 8x+cy
Artist 52 [7]
The answer is B, 7.

\sf 8x+2y

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\boxed{\sf 8x+7y}

We can't factor anything.

\sf 8x+12y

We can factor a 4 out of this: \sf 4(2x+3y)

\sf 8x+16y

We can factor an 8 out of this: \sf 8(x+2y)

So your answer is B, 7.
6 0
3 years ago
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