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
stealth61 [152]
4 years ago
7

What is the value of x and what is angle b?

Mathematics
1 answer:
SashulF [63]4 years ago
6 0

Answer:

x=6

B = 20

Step-by-step explanation:

The exterior angle is equal to the sum of the opposite interior angles

55+ 3x+2 = 13x-3

Combine like terms

57+3x = 13x -3

Subtract 3x from each side

57+3x-3x = 13x-3x-3

57 = 10x-3

Add 3 to each side

57+3 = 10x-3+3

60 = 10x

Divide each side by 10

60/10 = 10x/10

6 =x

We also want angle B

B = 3x+2

   3*6+2

   18+2

   20

You might be interested in
Find the remainder when f(x) = x3 − 14x2 + 7x − 10 is divided by x − 3. 184 164 −88 −122
Fudgin [204]

Answer:

122

Step-by-step explanation:

For this case we must build a quotient that, when multiplied by the divisor, eliminates the terms of the divide until it reaches the remainder.

It must be fulfilled that:

Dividend = Quotient * Divisor + Remainder

we have that the remainder is 122.

have a good day

5 0
3 years ago
What is the value of b2 - 4ac for the following equation?<br><br> 2x 2 - 2x - 1 = 0
NikAS [45]
2x^2-2x-1=0
\Delta=b^2-4ac

\Delta=(-2)^2-4*2*(-1)=4+8=12
5 0
3 years ago
Read 2 more answers
The perimeter of a rectangular field is 374 yard. If the length of the field is 99 yards, what is its width?
likoan [24]
The perimeter of a rectangle is 2*L+2*W. Knowing that length is 99, we do 2*99 to get 198.Do 374-198, which is 176, we know that that is twice the length of the width. Therefore the width is 176/2, which is 88.
3 0
3 years ago
Read 2 more answers
Find the vertex and length of the latus rectum for the parabola. y=-1/2(x-2)^2+8
victus00 [196]
Y = -(1/2)(x-2)² +8
Re write it in standard form:
(y-8) = -1/2(x-2)²  ↔ (y-k) = a(x-h)²

This parabola open downward (a = -1/2 <0), with a maximum shown in vertex
The vertex is (h , k) → Vertex(2 , 8)
focus(h, k +c )
 a = 1/4c → -1/2 = 1/4c → c = -1/2, hence focus(2, 8-1/2) →focus(2,15/2)

Latus rectum: y-value = 15/2

Replace in the equation y with 15/2→→15/2 = -1/2(x-2)² + 8
Or -1/2(x-2)² +8 -15/2 = 0
Solving this quadratic equation gives x' = 3 and x" = 2, then 
Latus rectum = 5

4 0
3 years ago
Find the surface area of the cylinder in terms of x.
Alekssandra [29.7K]
Surface area in units of PI = 2 x r x h +2 x r^2

first picture:

r = 7, h = 18

2 x 7 x 18 + 2 x 7^2

252 + 98

350 PI cm^2

2nd picture:  

2 x 9 x 20  +2 x 9^2

360 + 162

522 PI in^2


7 0
3 years ago
Read 2 more answers
Other questions:
  • In Ms. Sanchez's class, there are 20 female students and 12 male students. Which ratio can be used to express female students to
    6·1 answer
  • The volume of a cone is approximately 423.9 cubic inches of the height is 5 what is the radius of the base
    15·1 answer
  • Simply 3 26/27 + 2 3/4 + 15 1/9
    14·2 answers
  • If sinA-cosA=0, What is the value of TanA and SecA?​
    7·2 answers
  • Explain how you can use a model to find 4 x 3/4 include a drawing and a solution
    13·1 answer
  • 828 is 9/10— of which number?
    6·1 answer
  • Now given a rope hanging from the top of a pole. The end lying on the ground is 3 chi long. When tightly stretchedit is 8 chi fr
    15·1 answer
  • A type of opinion based on observation and evidence.
    7·2 answers
  • A is the point ( 7, 12 ) and B is the point ( 2, -1 ). Find the Length of AB.
    7·1 answer
  • Find the total surface area of the triangular prism.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!