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kati45 [8]
3 years ago
12

This figure shows △XYZ . MZ is the angle bisector of ∠YZX .

Mathematics
1 answer:
frosja888 [35]3 years ago
3 0
\frac{3.5}{x} = \frac{7}{11} \\ \\ 3.5*11  \\ 7*x   \\  \\ \frac{7x}{7} =  \frac{38.5}{7}  \\  \\ x = 5.5
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line y = 2x+1 is transformed by a dialation with a scale factor of two and centered at (0,-4). what is the equation of the image
Gekata [30.6K]

Answer: y = 2x + 6

Step-by-step explanation:

Here the equation of line,

y = 2x + 1

y-intercept of the line is, (0, 1)

And, the slope of the line is 2.

Since, If a point (x,y) is dilated by a scale factor k about a point (a,b),

Then transformed point are get by,

(x,y)\rightarrow (k(x-a)+a, k(y-b)+b)

Thus, The transformed point of point (0,1) when dilation is occur by the scale factor 2 about the point (0,-4),

(0,-4)\rightarrow (2(0-0)+0, 2(1+4)-4)

(0,-4)\rightarrow (0, 6)

Thus, the point of the new line is (0,6)

And, the slope of the new line is 2 ( because in the dilation, the slope of the line does not change)

Thus, the equation of new line,

(y - 6) = 2 (x - 0)

y - 6 = 2x

y = 2x + 6


5 0
3 years ago
Angles and transversals thank you
faltersainse [42]

Answer:

#11-13: 118 , 97 , 62

#7-10: 92 , 125 , 56 , 130

Step-by-step explanation:

#11. Supplementary angles (A + B = 180)

  • (n + 7) + (3n - 47) = 180
  • n = 55
  • <ABC = 3(55) - 47 = 118 degrees

#12. Supplementary angles

  • 83 + x = 180
  • x = 97
  • <ABC = 97 degrees

#13. Congruent angles (A = B)

  • (8x - 34) = (5x +2)
  • x = 12
  • <DEF = 5 (12) + 2 = 62 degrees

#7. Congruent angles

  • (3x +23) = 4x
  • x = 23
  • <ABC = 4(23) = 92 degrees

#8. Congruent angles

  • 5x = (3x + 50)
  • x = 25
  • <MPQ = 3(25) + 50 = 125 degrees

#9. Congruent angles

  • (a + 28) = 2a
  • a = 28
  • <MNP = (28) + 28 = 56 degrees

#10. Congruent angles

  • 5y = (2y + 78)
  • y = 26
  • <WXZ = 5(26) = 130 degrees

I hope this helps!

7 0
3 years ago
In Nebraska on I-80, the speed limit is 75 mph. How long would it take you to travel 525 miles in Nebraska on I-80 if you went t
julia-pushkina [17]

the answer to your question is 7 hours just keep adding 75 together

3 0
3 years ago
When multiplying an inequality by a negative number, make sure to flip the inequality sign.
timama [110]

Answer:

the answer is false but when it is divided by a negative number then you flip the inequality sign

3 0
3 years ago
Simplify the following expression:,3 + 5 (9+2n)
Rasek [7]
3 + 5(9+2n)
Distribute the 5 to the items in the parentheses 
3 + 5(9+2n)
3 + 45 + 10n
Combine like terms
48 + 10n
6 0
3 years ago
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