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
Jlenok [28]
3 years ago
12

Find the unknown angle measure by solving for the given variable

Mathematics
1 answer:
tiny-mole [99]3 years ago
3 0

A straight line is 180°. So you can do:

(15x - 4) + (5x - 8) = 180  Simplify

20x - 12 = 180

20x = 192    Find the value of x

x = 9.6

m∠ABD = 15x - 4      Plug in x = 9.6

m∠ABD = 15(9.6) - 4 = 144 - 4 = 140°

m∠DBC = 5x - 8   Plug in 9.6

m∠DBC = 5(9.6) - 8 = 48 - 8 = 40°

You might be interested in
Including zero) depending on your answer
kotykmax [81]

Answer: here b

Step-by-step explanation:

http://bigtrucktacos.com/menu/

8 0
3 years ago
Read 2 more answers
What is 10 to the power of 3 multiply by 17.55?
Alexus [3.1K]


10³ = 1 000

17.55 x 1 000 = 17550


4 0
3 years ago
Read 2 more answers
In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi
lana [24]

Answer:

Confidence interval:  (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

\bar{x} = 1858 \text{ kWh}

Population standard deviation =

\sigma = 450 \text{ kilowatt-hours}

Confidence Level = 95%

Significance level = 5% = 0.05

Confidence interval:

\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)

6 0
3 years ago
Please give me correct answer​
Mariulka [41]
Thanks for writing out the whole question, m=x is the correct answer. So B. Since the denominators are equal, the numerators must be too
4 0
3 years ago
Read 2 more answers
I have tried a couple of equation but none of them worked. Please help.
Whitepunk [10]
Let's start with the information we know. 

Aiden gets $85 a month
Over 7 months, he has saved (85*7 = 595) $595
He will need to have $1955 for the laptop

1955 -

Now figure out how many months he will have to spend to get 1955 - the 595 he already has (1360 is what that comes out to.) 1360 (The total he will need) / 85 (The number you get a month)

That equals 16.
It will take Aiden at his current rate of income, 16 months to save for his new computer. 


<u>--Something to remember--
</u>
<u />
<u></u>If the number you come out with is a decimal, I.E. 16.2, you will need to round up to the nearest whole number unless the equation specify's. In this case, instead of 16.2 it would be 17 months
5 0
4 years ago
Other questions:
  • How to solve this with explaination​
    10·2 answers
  • Help plsss :( ty :)bfiuhewufwefw
    9·2 answers
  • find the exponential model of best fit for the points (-3,5),(1,12),(5,72),(7,137). Explian how you got your answer. Round value
    5·1 answer
  • Alessandro wrote the quadratic equation –6 = x2 + 4x – 1 in standard form. What is the value of c in his new equation?
    7·2 answers
  • Di the products 40x 500 and 4x 600 have the same number of zeros? Explain
    8·2 answers
  • HELP, i’m not good a triangles
    15·1 answer
  • I have no idea how to solve this
    7·1 answer
  • Can u pls help me thank you :)<br> You have to tell me what times what times what equals 6.6
    5·1 answer
  • Use the zero product property to find the solutions to the equation x2 â€"" 15x â€"" 100 = 0. X = â€""20 or x = 5 x = â€""20 or
    6·1 answer
  • Which proportion could you use to convert 96 inches to feet?<br><br><br> 96 inches=____ feet
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!