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larisa [96]
3 years ago
13

An advertisement in a magazine has a width of 80 mm and a height of 125 mm. Find

Mathematics
1 answer:
Alecsey [184]3 years ago
3 0

Answer:

perimeter calculator online

Step-by-step explanation:

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Solve 3(2x+1) over 5 =2x-5
xenn [34]
Cross multiply
3(2x + 1) = 5(2x - 5)
expand by using distributive property
6x + 3 = 10x - 25
-4x = - 28
   x = 7
8 0
3 years ago
Read 2 more answers
Twice a number plus 6 times the number is 72
ExtremeBDS [4]

Answer:

9

Step-by-step explanation:

Let the no be x

By the conditions given ,

2x + 6x = 72

8x = 72

x = 72/8

x = 9

therefore the no is 9

6 0
3 years ago
Read 2 more answers
If Triangle ABC= triangle DEF, which statement must be true?
arlik [135]

The statement must be true is AC = DF ⇒ A

Step-by-step explanation:

When two triangles are congruent, then

  • Their corresponding sides are equal in lengths
  • Their corresponding angles are equal in measures
  • Their perimeters and areas are equal

∵ ΔABC ≅ DEF

- Their corresponding sides and angles are equal

∴ AB = DE ⇒ AB is the corresponding side of DE

∴ BC = EF ⇒ BC is the corresponding side of EF

∴ AC = DF ⇒ AC is the corresponding side of DF

∴ ∠A ≅ ∠D ⇒ ∠A is the corresponding angle of ∠D

∴ ∠ABC ≅ ∠DEF ⇒ ∠ABC is the corresponding angle of ∠DEF

∴ ∠C ≅ ∠F ⇒ ∠C is the corresponding angle of ∠F

- Look to the answer to find the correct statement

∴ AC = DF

The statement must be true is AC = DF

Learn more:

You can learn more about the congruent of triangles in brainly.com/question/6108628

#LearnwithBrainly

7 0
3 years ago
Help me please <br> calculate the value of x in the polygon
alisha [4.7K]

Answer:

122.5 degrees

Step-by-step explanation:

A six sided polygon's interior angles sum to

  (n-2)(180) =  (6-2) (180) = 720 degrees

then   x + x + x +     x+10    + 130   + 90 = 720

                          4x = 490        so x = 122.5 degrees

6 0
2 years ago
What Am I - using what you know
eduard
Hi there!

The missing angle is 23 degrees.

Remember every triangle has 180 degrees no matter what type. So you add 75 and 82 and subtract it from 180 giving you 23.

The first name is acute and the last name is scalene.

A acute triangle is when all angles are less than 90 and an obtuse triangle is when there is 1 obtuse angle and 2 acute angles.

Hope this helps !
6 0
3 years ago
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