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aev [14]
3 years ago
13

Help me almost done!

Mathematics
1 answer:
Andreyy893 years ago
6 0
Cos 60° is ½

and sin 60° is √3/2

so it is true....

that table may help you

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The area of the triangle with sides 60 cm,100 cm and 140 cm is of the form 1500 square root x cm².
Ede4ka [16]

Answer:

150

Step-by-step explanation:

5 0
2 years ago
In quadrilateral ABCD, AD ∥ BC. Quadrilateral A B C D is shown. Sides A D and B C are parallel. The length of A D is 3 x + 7 and
oksian1 [2.3K]

Answer:

  31 units

Step-by-step explanation:

When the figure is a parallelogram, opposite sides have the same measure:

  AD = BC

  3x +7 = 5x -9 . . . . . . substitute given expressions

  16 = 2x . . . . . . . . . . . add 9-3x

  8 = x . . . . . . . . . . . . . divide by 2

Use this value of x in the expression for AD to find its required length:

  AD = 3(8) +7 = 24 +7

  AD = 31 . . . . units

The length of segment AD must be 31 units for ABCD to be a parallelogram.

8 0
3 years ago
Read 2 more answers
hello again I need to find an equation to find the long side of the triangle. but this time only the hypotenuse is given. brainl
Hunter-Best [27]

Answer:

The answer to your question is Long = 10.39

Step-by-step explanation:

Data

hypotenuse = 12

long = ?

Process

1.- To find Long, we must use the trigonometric functions sine or cosine.

If we use sine, we use the 60° angle

If we use cosine, we use the 30° angle

a) sin 60 = long / hypotenuse

   Long = hypotenuse x sin 60

   Long = 12 x sin 60

   Long = 10.39

b) cos 30 = Long / hypotenuse

   Long = hypotenuse x cos 30

   Long = 12 x cos 30

  Long = 10.39

3 0
3 years ago
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An automobile saleswoman earns 12% on all of her sales. Last month, she sold 3 cars for a total sales amount of $28,950. What is
snow_tiger [21]

Answer:

3474

Step-by-step explanation:

28,950/100=289.5  289.5*12=3474

7 0
3 years ago
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A regular pentagon is created using the bases of five congruent isosceles triangles, joined at a common vertex. The total number
Gala2k [10]
It's 54 degrees.

The internet is a wonderful friend. Type in "Pentagon split into triangles" on google images and you will find a diagram that finds it.
4 0
3 years ago
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