3 years ago

Need help with this question!!!!!!!

Mathematics

1 answer:

kogti [31]3 years ago

6 0

Hey! Your answer to this question would be : x = 1, -5

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Find the measure of ∠C if ∠A = 3 2 x + 20 ∠B = 7 2 x + 20 ∠C = 5 2 x + 40 ∠D = 3 2 x + 10 A) 65° B) 76° C) 95° D) 115°

Rudiy27

The sum of the angles of a quadrilateral is 360°.
$\left(\dfrac{3}{2}x+20\right)+\left(\dfrac{7}{2}x+20\right)+\left(\dfrac{5}{2}x+40\right)+\left(\dfrac{3}{2}x+10\right)=360\\\\9x+90=360\\\\x=\dfrac{270}{9}=30$

Given that x=30, the measure of ∠C is
∠C = (5/2)×30 +40 = 115

The appropriate choice is ...
D) 115°

5 0

4 years ago

Read 2 more answers

Please help with these questions!

Colt1911 [192]

1/8 + 6/8 = 7/8
17 11/13 - 9 7/13 = 8 4/13
2/8 + 4/8 = 6/8 = 3/4
8/4 + 1/4 = 9/4 = 2 1/4
9/10 + 3/10 = 12/10 = 1 1/5
2 - 3/5 = 10/5 - 3/5 = 7/5 = 1 2/5
3/4 * 4 = 12/4 = 3
1/4 * 6 = 6/4 = 1 1/2

8 0

3 years ago

Help please I don't know what to do plz just send the answers because I'm tired and I cba to do calculations

Lyrx [107]

Answer is A
Just make sure you do know how to do them :)

4 0

4 years ago

Heyyyyyy besties plz answer this question correctly and u will get brainliest plz thanks

Levart [38]

Answer:

Nicole is more expansive

Step-by-step explanation: