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
Rus_ich [418]
3 years ago
14

Type the correct answer in the box. Round your answer to the nearest integer.

Mathematics
1 answer:
umka21 [38]3 years ago
4 0

Answer:

m∠ADC = 132°

Step-by-step explanation:

From the figure attached,

By applying sine rule in ΔABD,

\frac{\text{sin}(\angle ABD)}{\text{AD}}=\frac{\text{sin}(\angle ADB)}{AB}

\frac{\text{sin}(120)}{35}=\frac{\text{sin}(\angle ADB)}{30}

sin(∠ADB) = \frac{30\text{sin}(120)}{35}

                 = 0.74231

m∠ADB = \text{sin}^{-1}(0.74231)

             = 47.92°

             ≈ 48°

m∠ADC + m∠ADB = 180° [Linear pair of angles]

m∠ADC + 48° = 180°

m∠ADC = 180° - 48°

m∠ADC = 132°

You might be interested in
Peter is x years old and his sister is 5 years older. If the product of their ages is 84, form an equation in x and solve it to
daser333 [38]

Answer:

x^2 + 5x - 84 = 0

x = 7

Step-by-step explanation:

let the sister's age = y

sister's age (y)  = 5 + x  equation 1

xy = 84  equation 2

Make y the subject of the formula in equation 2

y = 84/x

equate equation 1 and 2

84/x = 5 + x  equation 3

Multiply equation 3 by x

84 = 5x + x^2

x^2 + 5x - 84 = 0

tjis can be solved using quadratic equation

x^2 -7x + 12x -84 = 0

x(x + 12) -7(x + 12)

x = 7 or - 12

age cant be negative so his age is 7

3 0
3 years ago
can someone give me the answer and please explain this to me because i really don't understand what this means at all, I need so
kicyunya [14]

Step-by-step explanation:

the one is the middle top the one in the middle bottom and the one in the bottom right

5 0
3 years ago
Find the product of 2and 3 and then take away 5
Dahasolnce [82]
The product of 2 and 3 is 6. When you take away, or subtract, 5 from 6, you get 1.
6 0
4 years ago
Identify the domain and range of each function. Make sure to provide these answers using inequalities.
yulyashka [42]

Answer:

a. Domain: (-∞, ∞)

   Range: (0,∞)

b. Domain: (-∞, ∞)

   Range: (0,∞)

c. Domain: (-∞, ∞)

   Range: (-∞,0)

d. Domain: (-∞, ∞)

   Range: (-∞,0)

e. Domain: (-∞, ∞)

   Range: (0,∞)

Step-by-step explanation:

a. y= 3(2)^x \\b. y= 7(0.4)^x \\c. y = -2(0.6)^x \\d. y = -3(4)^x \\e. y = 2(22)^x

These equations are all exponential functions. Exponential functions are curves which approach a horizontal asymptote usually at y=0 or the x-axis unless a value has been added to it. If it has, the curve shifts. None of these have that and their y - values remain between 0 and ∞. This is the range, the set of y values.

However, the range of exponentials can change based on the leading coefficient. If it is negative the graph flips upside down and its range goes to -∞. C and D have this. Their range is (-∞, 0)

In exponential functions, the x values are usually not affected and all are included in the function. Their domain is (-∞, ∞). All of these equations have this domain.

a. Domain: (-∞, ∞)

   Range: (0,∞)

b. Domain: (-∞, ∞)

   Range: (0,∞)

c. Domain: (-∞, ∞)

   Range: (-∞,0)

d. Domain: (-∞, ∞)

   Range: (-∞,0)

e. Domain: (-∞, ∞)

   Range: (0,∞)


5 0
3 years ago
Given that the measure of ∠x is 120°, and the measure of ∠y is 60°, find the measure of ∠z.
Alexxx [7]

Answer:

60 degrees

Step-by-step explanation:

angle y is vertically opposite to angle a, (we can call it.)

angle x is supplementary to the other angle inside the triangle, which we can call angle b.

so, angle a is 60 degrees, as vertically opposite angles are equal

angle b is 60 degrees as supplementary angles = 180

based of the sum of angles in a triangle is 180 theorem;

60+60+unknown= 180

so unknown is 60 degrees

8 0
3 years ago
Other questions:
  • A carpenter is building a rectangular bookcase with diagonal braces across the back, as shown. The carpenter knows that angle AD
    8·2 answers
  • SOMEONE HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
    13·2 answers
  • Any one good at factoring?
    8·1 answer
  • Identify the construction shown in the diagram! (10 POINTS AND WILL MARK BRAINLIEST)
    10·2 answers
  • A man drove his car a distance of 260 miles in 4 hours. If continuing at this rate is possible, he will travel ____ miles in 8 h
    12·2 answers
  • Is the sequence {81, 27, 9, 3, 1, …} arithmetic or geometric?
    14·2 answers
  • How do I do this ???!
    10·1 answer
  • Can someone help me what the correct letter are for the Segment Addition and Angle Addition Postulates Escape Room
    6·1 answer
  • Which equation represents the line that is perpendicular to and passes through (-12,6)?.
    9·1 answer
  • suppose that an urn initially contains five balls, numbered 1 through 5. suppose that these balls will be sequentially drawn at
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!