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
LenKa [72]
2 years ago
12

The measures of two supplementary angles are (3x + 9)° and (2x + 2)°. What is the measure of the smaller angle? A. 16.6° B. 69.6

° C. 22.6° D. 110.4°
Mathematics
1 answer:
s344n2d4d5 [400]2 years ago
3 0

Answer:

B

Step-by-step explanation:

Supplementary angles sum to 180°, hence

3x + 9 + 2x + 2 = 180, that is

5x + 11 = 180 ( subtract 11 from both sides )

5x = 169 ( divide both sides by 5 )

x = 33.8

Hence the smaller angle has a measure of

2x + 2 = (2 × 33.8) + 2 = 67.6 + 2 = 69.6° → B

You might be interested in
A radio station claims that the amount of advertising per hour of broadcast time has an average of 13 minutes and a standard dev
zimovet [89]

Answer:

Z = 3.33

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question:

\mu = 13, \sigma = 1.2

You listen to the radio station for 1​ hour, at a randomly selected​ time, and carefully observe that the amount of advertising time is equal to 17 minutes. Calculate the​ z-score for this amount of advertising time.

We have to find Z when X = 17. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{17 - 13}{1.2}

Z = 3.33

5 0
3 years ago
2xy+3x+4x+3 if x =5 and y = -5
Stels [109]

Answer:

The answer is -12

Step-by-step explanation:

2xy + 3x + 4x + 3 if x = 5 and y = -5

Now,

2xy + 3x + 4x + 3

2(5)(-5) + 3(5) + 4(5) + 3

-50 + 15 + 20 + 3

38 - 50 = -12

Thus, The answer is -12

<u>-</u><u>TheUnknownScientist</u>

6 0
2 years ago
A cell phone company charges $20 for registration and $0.5 for every minute call, write an equation to model the cost C(x) for u
stealth61 [152]

Answer:

C(x) = 20 + .5m

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Can someone help me please
Nitella [24]

Answer:

16 units

Step-by-step explanation:

The perimeter is the sum of the lengths

Add up the lengths as shown

3+2+1+2+3+1+1+3

16 units

4 0
3 years ago
Please answer A and B and give an explanation and show work. thank you!
NNADVOKAT [17]
Dont know a but b is 
75=100-2p
75 minus 100 = -25=-2p
-25/-2= p 
p=$12.50
4 0
3 years ago
Other questions:
  • Help please in algebra ​
    12·1 answer
  • The product of two numbers is 32. The first number, x, is one-half of the second number, y. Which system of equations can be use
    9·2 answers
  • Solve the problem by graphing <br> 4x-2y=22<br> 6x+9y=-3
    13·1 answer
  • Are the two triangles below similar?<br>PLEASE HELP ME!!!!!!!!!!​
    12·2 answers
  • Consider the equation 8x + 5 = 37. Write a real-life scenario that this equation could model.
    15·1 answer
  • ****BRAINLIEST GOES TO THE FIRST CORRECT ANSWER****
    7·1 answer
  • Which pair of angles are alternate exterior angles?
    6·2 answers
  • BRAINIEST TO WHOEVER RIGHT
    6·1 answer
  • Need help. i dont understand this!!!
    5·1 answer
  • Which ratios form a proportion
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!