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Dafna11 [192]
3 years ago
14

Need help, will give brainliest

Mathematics
1 answer:
Serhud [2]3 years ago
8 0

Answer:

you put the correct answer in

Step-by-step explanation:

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Choose the Theorem needed to find x, then find x.
Maru [420]

Answer: triangle sum , x= 9

Step-by-step explanation:

The triangle angle sum theorem states that the 3 interior angles of a triangle sum to 180 degrees. Add all of the angle measures together and set equal to 180. (3x-4)+(5x-7)+(13x+2) = 180. Combine like terms. 21x -9 = 180. Add 9 to both sides. 21x= 189. Divide both sides by 21. X = 9

5 0
2 years ago
A streetlamp has a 20 ft shadow that makes a 40° angle with the ground. which expression represents the height of the street lam
Oduvanchick [21]

Answer:

  • 20 sin 40°  ≈ 12.86 ft

Step-by-step explanation:

Let the height of the street lamp be x

Opposite angle is 40° and the shadow, the hypotenuse of the formed triangle is 20 ft.

  • sin 40° = x/20
  • x = 20sin 40°
  • x ≈ 12.86 ft
6 0
3 years ago
8 points and brainliest answer if you get it right
stellarik [79]
I think your answer is 78 = x -2
5 0
3 years ago
Read 2 more answers
Suppose that a cell phone monthly rate plan costs the user 5 cents per minute beyond a fixed monthly fee of $20. This implies th
nikdorinn [45]

Answer:

y = 20 + .5x

Step-by-step explanation:

Suppose that a cell phone monthly rate plan costs the user 5 cents per minute beyond a fixed monthly fee of $20. This implies that the relationship between monthly cost and monthly number of minutes is linear. Write an equation that relates total monthly cost to monthly minutes used.

Fixed monthly fee = $20

Fee per minute = $0.5

Number of minutes = x

Variable monthly cost = 0.5x

Let Total monthly cost = y

Total monthly cost = fixed monthly cost + variable monthly cost

y = 20 + .5x

Equation that relates total monthly cost to monthly minutes used is y = 20 + .5x

8 0
3 years ago
Write 2 equivalent expressions for each and find the total price ​
almond37 [142]

Answer:

it will be 20$ if im wrong you can correct me

4 0
2 years ago
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