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GuDViN [60]
4 years ago
12

Can someone explain how to solve and find x on the triangle

Mathematics
1 answer:
Romashka [77]4 years ago
5 0

Step-by-step explanation:

sum of all the angles in a triangle is equal to 180°

82 + 70 + (2x + 4) = 180

152 + 2x + 4 = 180

156 + 2x = 180

2x = 180 - 156

2x = 24

x = 12

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I just need help with this
ella [17]

The formula for area of a circle is: πr^2

r is half the diameter.

FE is the diameter: r = 20/2 = 10

Area of circle using FE = π10^2 = π * 100 = 314 square meters.

BE is a radius:

Area = π3.5^2 = π * 12.25 = 38.465  = 38.5 square cm ( rounded to nearest tenth).

AB is a radius:

Area = π11^2 = π * 121 = 379.94 = 380 square feet ( rounded off).

EF is a diameter

r = 12/2 = 6 meters

Area = π6^2 = π * 36 = 113.04 = 113 square meters ( rounded off).

8 0
3 years ago
F(x)=x^2 linear or exponential
marusya05 [52]

Answer:

exponential

Step-by-step explanation:

3 0
3 years ago
Complete the proof. If 7+5x+9=−3x , then x=−2 .
sashaice [31]

Answer:

7+5x+9=−3x

7+5(-2)+9=−3(-2)

7+-10+9=6

-3+9=6

6=6

Step-by-step explanation:

7+5x+9=−3x

7+5(-2)+9=−3(-2)

7+-10+9=6

-3+9=6

6=6

5 0
4 years ago
A car manufacturer is reducing the number of incidents with the transmission by issuing a voluntary recall. During week 3 of the
S_A_V [24]

Answer:

y(t) = 391 - 30t

Step-by-step explanation:

The weekly difference is 391-361 = 30

y(t) = 391 - 30t.

With t being the number of weeks.

7 0
3 years ago
Read 2 more answers
in quadrilateral abcd , angle A=57 degrees , angle B=65 degrees and angle c=118 degrees What is the measure of an exterior angle
OlgaM077 [116]
The total measure of the interior angles of a quadrilateral is 360 degrees
you are given 57, 65, 118
That is 240
to solve for the last angle
360-240
120
The exterior angle of a D would be the number that you add that will make it 180 degrees.
meaning 180-120 is 
The exterior angle of angle D is 60 degrees.

Hope this helps
8 0
4 years ago
Read 2 more answers
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