1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kotykmax [81]
3 years ago
10

A quadrilateral has three angles that measure 80°, 110°, and 75°. Which is the measure of the fourth angle? A. 50° B. 90° C. 95°

D. 125°
Mathematics
2 answers:
Free_Kalibri [48]3 years ago
5 0

a quadrilateral has 4 angles that add up to 360 degrees

x + 80+110+ 75 = 360

combine like  terms

x + 265 = 360

subtract 265 from each side

x + 265 -265 =360 -265

x = 95

Choice C

Step2247 [10]3 years ago
3 0

Answer:

C. 95°

Step-by-step explanation:

Since the sum of the interior angles of any triangle is 180 ° and there are two triangles in a quadrilateral, the sum of the angles of all the quadrilaterals is 360 °.

Let us denote the angles with the letter "A", so that their values are:

A1 = 80°

A2 = 110°

A3 = 75°

A4 =?

So, applying the rule without exceptions that a quadrilateral has 4 angles that add up to 360°, we have

A1 + A2 + A3 + A4 = 360°

Isolating A4 and substituting the values, we obtain the value of the fourth angle:

A4 = 360° - A1 - A2 - A3

A4 = 360° - 80° - 110° - 75°

A4 = 95°  

The correct option is C. 95°

Hpe this hepls!

You might be interested in
I NEED HELPPPPP!!!! PLZZZ
iVinArrow [24]

Answer:

13.5

Step-by-step explanation:

4 0
3 years ago
Helppppp meeee pleaseeee in horrible at math
rosijanka [135]
Circumference = 2×3.14×r
3.14 is pie and r is the radius.
To find the radius you divide the diameter by 2.
19 ÷ 2 = 9.5
2×3.14×9.5 = 59.66
Multiply 59.66 by 6 because ther are 6 pennies.

59.66 × 6 = 357.96 mm.
4 0
3 years ago
Richard has 4 1/2 ft of wood. He needs to cut the wood into 5 equal pieces. Each piece of wood will be _____?
mina [271]

Answer: 22 1/2


Step-by-step explanation: first convert 4 1/2 into a mixed # = 9/2

The divide that by 5 (mult by reciprocal)

Reciprocal is the # flipped so,

9/2 x 1/5

= 45/2

divide 45 by 2


5 0
3 years ago
Yo these tutors got no respect in E2020 just called her a disrespectful perra
vagabundo [1.1K]

Answer:

encerio y eso

Step-by-step explanation:

5 0
3 years ago
What is the smallest positive integer N such that the value 70 + 30(N) is not a prime number?
matrenka [14]
It is 1
70+30*1=100, which is not a prime number
4 0
3 years ago
Other questions:
  • V = 5x + 2y<br> X = 3<br> y = -4<br> a) Work out the value of V.
    15·2 answers
  • 2. Describe the transformation of the graph of f(x) = 6* that yields the graph of f(x) = 6*+1
    14·1 answer
  • Α-(α-90°)=(α-180°)-α <br> Pls help!
    11·1 answer
  • Write an equation of a line with the given slope and y-intercept.
    6·1 answer
  • each hour Maggie baby-sits she charge $2 plus $0.75 for each child. write an equation for Maggie's hourly rate h in terms of the
    5·1 answer
  • When 31 times a number is increased by 40 the answer is the same as when 200 is decreased by the number
    8·1 answer
  • In a Survey of 500 people , 350 people dank only one drink. 60 people dink none them. Find the number of people who drink both ,
    11·2 answers
  • Helpppppppppppppppppppppppppppp
    8·2 answers
  • I need help solving for X
    5·2 answers
  • Which values of a, b, and c correctly complete the division?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!