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
Julli [10]
3 years ago
8

8. A dog chasing some birds in the woods got away from its owner. If the owner is 30 yards

Mathematics
1 answer:
puteri [66]3 years ago
8 0

Answer:

172.76 yards.

Step-by-step explanation:

The dog chasing some birds got away from its owner by x yards (say).

It is clear from the problem that this x yards is the slant distance from the dog to the owner.

The vertical distance from the dog to the owner is given to be 30 yards, and the angle of elevation from the owner to the dog is 10°.

Therefore, we can write that \sin 10 =\frac{30}{x}

⇒ x = \frac{30}{\sin10} = 172.76 yards. (Answer)

You might be interested in
Name two triangles that are congruent by the ASA Postulate.
lubasha [3.4K]
Is there a picture to this question?
8 0
3 years ago
What is the result of substituting for y in the bottom equation<br> y=x+3<br> y=x^2+2x-4
8_murik_8 [283]

The solutions are (2.1925, 5.1925) and (-3.1925, -0.1925)

<em><u>Solution:</u></em>

Given that,

y = x + 3 ------- eqn 1\\\\y = x^2 + 2x - 4  ----- eqn 2

<em><u>We have to substitute eqn 1 in eqn 2</u></em>

x + 3 = x^2 + 2x - 4

\mathrm{Switch\:sides}\\\\x^2+2x-4=x+3\\\\\mathrm{Subtract\:}3\mathrm{\:from\:both\:sides}\\\\x^2+2x-4-3=x+3-3\\\\\mathrm{Simplify}\\\\x^2+2x-7=x\\\\\mathrm{Subtract\:}x\mathrm{\:from\:both\:sides}\\\\x^2+2x-7-x=x-x\\\\\mathrm{Simplify}\\\\x^2+x-7=0

\mathrm{Solve\:with\:the\:quadratic\:formula}\\\\\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\\\x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\mathrm{For\:}\quad a=1,\:b=1,\:c=-7\\\\x =\frac{-1\pm \sqrt{1^2-4\cdot \:1\left(-7\right)}}{2\cdot \:1}

x = \frac{-1 \pm \sqrt{ 1 + 28}}{2}\\\\x = \frac{ -1 \pm \sqrt{29}}{2}

x = \frac{ -1 \pm 5.385 }{2}\\\\We\ have\ two\ solutions\\\\x = \frac{ -1 + 5.385 }{2}\\\\x = 2.1925

Also\\\\x = \frac{ -1 - 5.385 }{2}\\\\x = -3.1925

Substitute x = 2.1925 in eqn 1

y = 2.1925 + 3

y = 5.1925

Substitute x = -3.1925 in eqn 1

y = -3.1925 + 3

y = -0.1925

Thus the solutions are (2.1925, 5.1925) and (-3.1925, -0.1925)

6 0
3 years ago
What is the value of x three times less than the value of 45−10x?
Mekhanik [1.2K]
This is the concept of algebra. The value of x three times less than the value of 45-10x will be as follows;
The value of x three times is:
3x
subtracting 45-10x we get:
3x-(45-10x)
3x+10x-45
13x-45
the answer is:
13x-45
6 0
3 years ago
If a polynomial has one root in the form a+√b , it has a second root in the form of a_√b
Elina [12.6K]

Answer:

Step-by-step explanation:

a+√b

a-√b

3 0
3 years ago
Can anyone help me with this equation?
beks73 [17]

Answer:

false

Step-by-step explanation:

5+2=15÷(3+2)

5+2=15÷5

7=15÷5

7=3

false because they are different

4 0
3 years ago
Read 2 more answers
Other questions:
  • Alan has $25 to spend he spent $12.89 including tax to buy a new DVD he needs to save $5 but he wants to buy a snack if candy ba
    8·1 answer
  • I rlly need help! im stuck on this! 20 pts
    15·1 answer
  • .
    9·1 answer
  • Consider the experimental situation described below. Ability to grow in shade may help pines in the dry forests of Arizona resis
    8·1 answer
  • (3.2x10^3) + (5.78 x 10^5) ?
    9·1 answer
  • Write a 5 digitnumber that is divisible by 8?
    10·2 answers
  • <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B5%7D%20%3D%20%5Cfrac%7B10%7D%7B2%7D" id="TexFormula1" title="\frac{x}{5} = \f
    15·1 answer
  • Find the base of a parallelogram with area of 24 and height of 3 3/4
    5·2 answers
  • Which situation could not represent a proportional relationship?
    7·2 answers
  • Four pieces of rope of unknown (but equal) length and 10 more feet of rope are attached together. The resulting rope is 30 feet
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!