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makkiz [27]
3 years ago
13

What is the value of x if 4x - 9 = 11? A. 1/2 B.2 C.5 D.20

Mathematics
2 answers:
Maru [420]3 years ago
5 0

Answer:

C

Step-by-step explanation:

kari74 [83]3 years ago
3 0

Answer: 4x-9=11

4(5)-9=11

20-9=11

11=11

Step-by-step explanation:

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Will mark brainliest, help me answer this question!
DanielleElmas [232]

Answer:

135 degrees

Step-by-step explanation:

  • Angle CBD is the sum of angle ABC and angle ABD, so we find these first
  • An Isosceles triangle has 2 equal sides and 2 equal angles
  • Isosceles triangle theorem tells us that the 2 equal angles are respectively opposite the equal sides
  • Since triangle ABC has sides AB=AC, then angle ACB = angle ABC
  • So knowing that angles of triangle add up to 180, then
  • \angle CAB+\angle ACB+\angle ABC=180\\(50)+\angle ACB+\angle ABC=180\\50-(50)+\angle ACB+\angle ABC=180-(50)\\\angle ACB+\angle ABC=130\\But,\angle ACB=\angle ABC,so\\(\angle ABC)+\angle ABC=130\\2\angle ABC=130\\\angle ABC=65
  • Now we do the next triangle to get ABD
  • Since triangle ABD has sides AB=BD, then angle BDA = angle BAD
  • So knowing that angles of triangle add up to 180, then
  • \angle BDA+\angle BAD+\angle ABD=180\\(55)+\angle BAD+\angle ABD=180\\But,\angle BDA=\angle BAD,so\\(55)+(55)+\angle ABD=180\\110+\angle ABD=180\\110-(110)+\angle ABD=180-(110)\\\angle ABD=70
  • Now we said, angle CBD is the sum of angle ABC and angle ABD, so
  • \angle ABC+\angle ABD=\angle CBD\\(65)+(70)=\angle CBD\\\angle CBD=135
3 0
3 years ago
Read 2 more answers
What is the largest integer value an angle of a parallelogram can have?
zloy xaker [14]
Only 2 or more 180 degree angles can be considered parallel.
4 0
3 years ago
HELPPP ITS ABOUt DILATION EXPLANATION NEEDED PLZZZ
Lubov Fominskaja [6]

<em>Answer:</em>

<h3><em>B'=</em><em>(</em><em>1</em><em>6</em><em>,</em><em>1</em><em>4</em><em>)</em></h3>

<em>It </em><em>is </em><em>clear </em><em>from </em><em>the </em><em>co-ordinates</em><em> </em><em>of </em><em>the </em><em>square </em><em>that </em><em>CD </em><em>is </em><em>parallel </em><em>to </em><em>X </em><em>axis </em><em>and </em><em>BC </em><em>is </em><em>parallel </em><em>to </em><em>y-axis.</em><em> </em><em>So,</em><em>X=</em><em>8</em><em>,</em><em>y=</em><em>7</em>

<em>so </em><em>the </em><em>co-ordinates</em><em> </em><em>of </em><em>B=</em><em>(</em><em>8</em><em>,</em><em>7</em><em>)</em>

<em>Now </em><em>after </em><em>dilation</em><em> </em><em>of </em><em>factor </em><em>2</em><em>,</em><em> </em><em>all </em><em>coordinates</em><em> </em><em>will </em><em>be </em><em>multiplied</em><em> </em><em>by</em><em> </em><em>2</em><em>.</em>

<em>So </em><em>B'=</em><em>(</em><em>1</em><em>6</em><em>,</em><em>1</em><em>4</em><em>)</em>

<em>hope </em><em>it</em><em> helps</em>

7 0
3 years ago
I need help or my math teacher will call my parents up about it and I will die
Artist 52 [7]

Answer:

Sure, I'll help you with math? What type of math is it?

Step-by-step explanation:

4 0
3 years ago
5/90 in simplest form
ExtremeBDS [4]
1/8 divide both numbers by 5
3 0
4 years ago
Read 2 more answers
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