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zimovet [89]
2 years ago
9

Triangles-- find the M<ECD if ​ABC angels are 31 degress.picture added​

Mathematics
1 answer:
never [62]2 years ago
5 0

Answer:

Step-by-step explanation:

180° - 2 × 31° = 118° is measure of an angle which is vertical to ∠ECD ⇒

m∠ECD = 118°

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What is the greatest common factor of (8x-6)
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Answer:

Step-by-step explanation:

(8x-6)

=2(4x-3)

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Wat is the answer to5n-16-8n=-10
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4 0
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The length of a rectangle is 3 1/6 cm longer than the width. The perimeter of the rectangle is 15 1/3 cm. What are the width and
ahrayia [7]

The width of rectangle is 2\frac{1}{4} cm and length is 5\frac{5}{12} cm.

Step-by-step explanation:

Let,

Width of rectangle = w

Length of rectangle = w+3\frac{1}{6}=w+\frac{19}{6}

Perimeter of rectangle = 15\frac{1}{3}=\frac{46}{3} cm

Perimeter = 2(Length + Width)

\frac{46}{3}=2(w+\frac{19}{6}+w)\\\\\frac{46}{3}=2(2w+\frac{19}{6})\\\\\frac{46}{3}=4w+\frac{19}{3}\\\\4w+\frac{19}{3}=\frac{46}{3}\\\\4w=\frac{46}{3}-\frac{19}{3}\\\\\ 4w=\frac{46-19}{3}\\\\4w=\frac{27}{3}\\\\4w=9

Dividing both sides by 4

\frac{4w}{4}=\frac{9}{4}\\\\w=\frac{9}{4}

Width of rectangle = \frac{9}{4}=2\frac{1}{4}\ cm

Length = w+\frac{19}{6}=\frac{9}{4}+\frac{19}{6}\\\\Length = \frac{27+38}{12}=\frac{65}{12}\\\\Length=5\frac{5}{12}\ cm

The width of rectangle is 2\frac{1}{4} cm and length is 5\frac{5}{12} cm.

Keywords: rectangle, perimeter

Learn more about perimeter at:

  • brainly.com/question/12613605
  • brainly.com/question/12700460

#LearnwithBrainly

6 0
3 years ago
I need to know the inches and square inches
AlekseyPX
The length is 6/5 of the width, which is 12. so you multiply them, 6/5 times 12/1 and you get 72/5 which simplifies to 14 and 2/5 or 14.4. so your length is 14.4. which means your perimeter is 52.8 inches. and to get the area you just multiply 12 by 14.4 and you get 172.8. so your perimeter is 52.8 and your area is 172.8
5 0
3 years ago
Find an equation for the line that passes through the point (0,-1) and has a slope 7/10
Leto [7]

Answer:

y= 7/10x -1

Step-by-step explanation:

Assuming you want the equation is slope intercept form, this is the format for slope intercept: y=mx+b. Since you have the slope, this is your current equation: y=7/10x+b. Next, you want to find the y-intercept. So, plug in the coordinate to the equation. This is what it should look like: -1=7/10(0) +b/ Multiply 7/10 by 0 to get 0. So, here is what you're left with: -1=b. -1 is your y-intercept. Go back to your original equation and plug in the -1. This is your final answer: y= 7/10x-1. Hope this helped!

8 0
3 years ago
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