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
irga5000 [103]
3 years ago
12

Given two complementary angles, 3x and (x - 2). Find the value of x.

Mathematics
1 answer:
ohaa [14]3 years ago
6 0

Answer:

x = 23°

Step-by-step explanation:

Note: Complementary angles measure 90°

3x + (x - 2)° = 90°

=> 3x + x - 2° = 90°

=> 4x - 2° = 90°

Add the additive inverse of -2 to both sides of the equation

i.e 4x - 2° + 2° = 90° + 2°

=> 4x = 92°

Divide both sides of the equation by the coefficient of x which is 4

=> 4x/4 = 92°/4

x = 23°

You might be interested in
Help help math math math
marysya [2.9K]
507 i think. you just square 13 then multiply that by pi which is 3
6 0
3 years ago
Read 2 more answers
The mean cost of domestic airfares in the United States rose to an all-time high of $385 per ticket (Bureau of Transportation St
saveliy_v [14]

Answer:

a)0.067

b)0.111

c)0.612

d)$687.28

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $385

Standard Deviation, σ = $110

We are given that the distribution of domestic airfares is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P(domestic airfare is $550 or more)

P(x > 550)

P( x > 550) = P( z > \displaystyle\frac{550 - 385}{110}) = P(z > 1.5)

= 1 - P(z \leq 1.5)

Calculation the value from standard normal z table, we have,  

P(x > 550) = 1 - 0.933 = 0.067= 6.7\%

b) P(domestic airfare is $250 or less)

P(x \leq 250) = P(z \leq \displaystyle\frac{250-385}{110}) = P(z \leq -1.22)

Calculating the value from the standard normal table we have,

P( x \leq 250) = 0.111 = 11.1\%

c))P(domestic airfare is between $300 and $500)

P(300 \leq x \leq 500) = P(\displaystyle\frac{300 - 385}{110} \leq z \leq \displaystyle\frac{500-385}{110}) = P(-0.77 \leq z \leq 1.04)\\\\= P(z \leq 1.04) - P(z < -0.77)\\= 0.851 - 0.239 = 0.612 = 61.2\%

P(300 \leq x \leq 500) = 61.2\%

d) P(X=x) = 0.03

We have to find the value of x such that the probability is 0.03.

P(X > x)

P( X > x) = P( z > \displaystyle\frac{x - 385}{110})=0.03

= 1 -P( z \leq \displaystyle\frac{x - 385}{110})=0.03

=P( z \leq \displaystyle\frac{x - 385}{110})=0.997

Calculation the value from standard normal z table, we have,  

\displaystyle\frac{x - 385}{110} = 2.748\\x = 687.28

Hence, the domestic fares must be $687.28 or greater for them to lie in the highest 3%.

7 0
3 years ago
How do I write 3 1/2 as an improper fraction in three diffrent ways and fast please
Sav [38]
One can be 7/2 ...................
5 0
3 years ago
Read 2 more answers
At an end of the year sale, Gabriela bought more than 12 bottles of hand soaps and lotions. If x represents the number of hand s
nadya68 [22]

Answer:

the answer is b

Step-by-step explanation:

edge 2021

6 0
3 years ago
Read 2 more answers
What is -4 x 8 x n simplified?
Galina-37 [17]

Answer:

It's -32x^2

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • Five oranges were selected at random from a crate of 53 oranges. Their diameters were measured, in millimeters, and then recorde
    10·2 answers
  • 7y plus 8 equals 57 then 2y equals?
    6·1 answer
  • what is the value of the expression? 4(6/10−1/5)+0.4 enter your answer, in simplest form, in the box.
    12·1 answer
  • Anybody know this!? Help please ..
    6·1 answer
  • You've fallen into my trap! justin shouts, laughing like the madman he is. the mouse he captured stares back at him indifferentl
    12·2 answers
  • Which multiplication equation can be used to explain the solution to 15: ?
    12·1 answer
  • Select the three problems below in which the solution would be a negative number.
    12·1 answer
  • How many two-step paths are there from C to B? (Use a matrix to determine this.)
    7·1 answer
  • What is the average of these amounts? $190,258.50;$152,698,00;$122,753.00;$220,523.00;$231,951.00
    15·2 answers
  • Which of the following equations can be used to find the length of EF in the
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!