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Shtirlitz [24]
3 years ago
9

Find the sum of the interior angle measures of a 5-gon.

Mathematics
1 answer:
Irina-Kira [14]3 years ago
8 0

Answer:

540°

Step-by-step explanation:

The sum of interior angles in a polygon is equal to 180(x-2) where x is the number of sides. Since there are 5 sides, 180(5-2)=540°.

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Which first step for solving the given system using substitution results in an equation without fractions?
vaieri [72.5K]
The correct answer is solve for y in the second equation.

Step 1: Multiply each equation by a suitable number so that the two equations have the same leading coefficient. ...
Step 2: Subtract the second equation from the first.
Step 3: Solve this new equation for y.
Step 4: Substitute y = 2 into either Equation 1 or Equation 2 above and solve for x.
5 0
3 years ago
Please explain how to do and set up
In-s [12.5K]

A

using the Cosine rule in ΔSTU

let t = SU, s = TU and u = ST, then

t² = u² + s² - (2us cos T )

substitute the appropriate values into the formula

t² = 5² + 9² - (2 × 5 × 9 × cos68° )

   = 25 + 81 - 90cos68°

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⇒ t = \sqrt{72.29} ≈ 8.5 in → A


6 0
3 years ago
Explain your answer​
N76 [4]

x is equal to - 2/3 after collecting like terms

5 0
3 years ago
Can someone pleaseeee help if you’re correct I’ll give u brainlist
Effectus [21]

<em><u>Answer:</u></em>

The answer is 70 degrees.

<em><u>Step-by-step explanation:</u></em>

1. All the angles in a circle add up to 360, and the red square thing in the TVU angle means it's a 90 degree angle.

2. Add 150 plus 50 plus 90 = 290

3. 360 degrees (total) - 290 degrees = 70 degrees! :)

3 0
3 years ago
Find the first four terms of the sequence given a1=18 and an+1=2+an/2.
EleoNora [17]

Answer:

Step-by-step explanation:

hello

a_1=18\\\\a_2=2+\dfrac{a_1}{2}=2+\dfrac{18}{2}=2+9=11\\\\a_3=2+\dfrac{a_2}{2}=2+\dfrac{11}{2}=\dfrac{4+11}{2}=\dfrac{15}{2}\\\\a_4=2+\dfrac{a_3}{2}=2+\dfrac{15}{2}=\dfrac{4+15}{2}=\dfrac{19}{2}

hope this helps

7 0
3 years ago
Read 2 more answers
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