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
a_sh-v [17]
2 years ago
15

∡C and ∡D are supplementary angles. If m∡D is nine less than twice m∡C, find m∡D.

Mathematics
1 answer:
Gala2k [10]2 years ago
6 0

Answer:

D is 117

Step-by-step explanation:

Let the measure of angle C be x

The measure of D is 9 less than twice C

Mathematically that is 2x-9

If both are supplementary, they add up to be 180

Thus;

x + 2x - 9 = 180

3x = 180 + 9

x = 189/3

x = 63

Recall;

D = 2x-9= 2(63) -9 = 126 -9 = 117

You might be interested in
the equation of a line is y=-1/2x-2. what is the equation of the line that is perpendicular to the first line and passes through
Alexxandr [17]
Perpendicular means that the slopes are negartive inverses, aka
slope1 times slope2=-1

y=mx+b
slope=m

y=-1/2x-2
slope=-1/2

we need to find negative inverse
-1/2 times what=-1
answer is 2

y=2x+b
input the point (2,-2) to find b
(x,y)
(2,-2)
-2=2(2)+b
-2=4+b
minus 4 from both sides
-6=b
y=2x-6

the equtaion is y=2x-6
8 0
3 years ago
17/9 15 divided 6 divided 30 divided and 3^3 from least to greatest
qaws [65]

I assume you mean: Order the following from least to greatest:

17/9, 15 divided by 6, 30, and 3^3

17/9 = 1 8/9

15/6 = 2 1/2

3^3 = 9

So it would be: 17/9, 15 divided by 6, 3^3, and 30

Make necessary adjustments if it was actually 6/30; the wording was confusing.


8 0
2 years ago
What is the sum of 2 1/3, 3 5/6 and 6 2/3
Andreas93 [3]
2 1/3+ 3 5/6+ 6 2/3
= 7/3+ 23/6+ 20/3
= 14/6+ 23/6+ 40/6
= 77/6
= 12 5/6

The final answer is 12 5/6~
5 0
3 years ago
I need help pls ;-;?
n200080 [17]
In whattt thooooooooo
4 0
3 years ago
Convert 300 seconds to minutes. A) 5 minutes B) 15 minutes C) 30 minutes D) 150 minutes
Olin [163]
1 minute = 60 seconds

300 seconds / 60 seconds = 5 minutes
7 0
2 years ago
Read 2 more answers
Other questions:
  • The equation of the line of best fit is shown below.
    15·1 answer
  • The moon is 250,000 miles away. How many inches is it away from earth?
    12·1 answer
  • The measure of ac = 7, mbac = 80°, mabc = 50°, the measure of nm = 7, mlnm = 80°, and mnlm = 50°. do the measurements indicate t
    12·1 answer
  • Point A is located at (0, 4) and point C is located at (-3, 5). Find the x value for point B that is located the distance from p
    14·1 answer
  • The hypotenuse of a right triangle is 85 meters long. One of its legs is 36 meters long.
    14·2 answers
  • Which transformations would result in the image shown?
    13·1 answer
  • PLEASE HELP! I’ll give brainliest!
    13·1 answer
  • WILL GIVE BRAINLIEST
    6·1 answer
  • Some answer my question
    7·3 answers
  • The volume of the fish tank needs to be tripled. What scale factor should be applied to the dimensions to produce a fish tank wi
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!