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
Nonamiya [84]
3 years ago
7

I'm really lost on this problem

Mathematics
1 answer:
Alenkinab [10]3 years ago
5 0
Since you need a little bit of trigonometry to solve this problem,
I'm pretty sure you've had a little bit of trigonometry in class before
you were assigned to solve this problem.

-- The shaded triangle comes from taking the equilateral triangle and
either folding it in half or cutting it in half.

-- The base that the new triangle is standing on is 1/2 the base of the
equilateral triangle, so it's 7 cm long.

-- The acute angle at the right end of the base is the same as it was in
the equilateral triangle . . . 60 degrees.

--  The tangent of 60 degrees is (opposite side)/(adjacent side) = x / 7 cm

              tan(60) = x/7

-- Multiply each side of this little equation by 7 :   7 tan(60) = x
 
If you don't have the tangent of 60 degrees in your pocket, you can
find it with your calculator.  Multiply it by 7, and Shazam, you know 'x' .
You might be interested in
Find the radius of a circle with diameter 91yd
4vir4ik [10]

Answer: 45.5yds

Step-by-step explanation:

- the radius is simply half of the diameter so: 91 / 2= 45.5yd

- so the radius is 45.5yds

hope this helps :)

8 0
1 year ago
Read 2 more answers
Two and one-third times two and three-fourths.
vesna_86 [32]

Answer:

6\frac{5}{12}

Step-by-step explanation:

2\frac{1}{3}* 2\frac{3}{4}\\\rule{150}{0.5}\\\frac{7}{3} * \frac{11}{4}\\\\\frac{7*11}{3*4}\\\\\frac{77}{12}\\\\\text{77 goes into 12 6 times with 5 left over.}\\\\\boxed{6\frac{5}{12}}

3 0
2 years ago
Read 2 more answers
10 weeks ago Jerry bought stock at 21 and a half today the stock is valued at 20 and 3/8 we can say the stock is performing at w
seropon [69]
Par value means that the stock is quoted at the face or principal value.

If Jerry bought the stock at the face value, it means that the stock is now below its face value, and that is said that the stock is below par.

Therefore, the answer is below par.



Answer: below par.
7 0
3 years ago
Identify the lateral area and surface area of a regular triangular pyramid with base edge length 14 cm and slant height 15 cm
posledela

Answer:

D) L = 315 cm2 ; S = 399.9 cm2

Step-by-step explanation:

Lateral area;

3 × (½)(14)(15)

315 cm²

Surface area:

315 + (½)(14)(14)sin(60)

399.8704896 cm²

6 0
3 years ago
Read 2 more answers
What is the value of the expression below?<br><br> −20÷5
Lera25 [3.4K]
The answer would be -4
Hope this helps
5 0
3 years ago
Read 2 more answers
Other questions:
  • How do you work this problem? 4+___ &lt; 10
    8·2 answers
  • You have the answer?
    10·1 answer
  • Write 10/6 as a mixed number in simplest form
    11·2 answers
  • the selling price for a classic speedboat is $1800, which is $1500 less the 2 times its original price. what was the original pr
    7·1 answer
  • If (8, −9) and (6, −3) are the endpoints of the diameter of a circle, what is the equation of the circle?
    6·1 answer
  • The triangles on the grid below represent a translation.
    15·2 answers
  • For a rollerblading party there are 50 tickets available. Jason buys 6 tickets and Heather buys three times as many as Jason bou
    10·1 answer
  • What is the slope of the line?
    14·2 answers
  • Aaron has 13 dimes and 10 quarters. Emily has the same amount of money as Aaron, but she only has nickels and dimes.
    12·1 answer
  • Multiply: 55.7 x 0.6
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!