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
*How can I find the sum of -5 + 12 using a vertical number line? *
antoniya [11.8K]
QqqqqqwqqwffdhvdhbxeZ chiita hexhhrdbbb fc gvcgxehnbcgbvb hnohvb mloibddgzzc loco ducrxbjv
4 0
3 years ago
Help me its due in a little
soldi70 [24.7K]

Answer:

a-50 b-300

Step-by-step explanation:

3 0
3 years ago
On Sunday 440 people visited a museum that charges $9 for each child and $12.50 for each adult. If the museum earned $5,220 on t
alisha [4.7K]

Answer:

A) 360 adults

Step-by-step explanation:

c=quantity of child

a=quantity of adult

9c+12.5a=5220

a+c=440    then c=440-a

substitute for c

9(440-a)+12.5a=5220

3960-9a+12.5a=5220

reduce

3.5a=1260

a=360

3 0
3 years ago
For every gallon of water in a swimming pool, you’ Instructed to add four grams of chlorine. How many grams of chlorine would yo
Kruka [31]

Answer:

52

Step-by-step explanation:

Multiply grams per gallon times gallons to get grams.

4\,\dfrac{g}{gal}\times 13\,gal=4\times 13\,\dfrac{g\cdot gal}{gal}=52\,g

7 0
3 years ago
Read 2 more answers
A copy machine makes 44 copies per minute. How many copies does it make in 4 minutes and 15 seconds?
Gelneren [198K]

Answer: 102 copies

Step-by-step explanation:

4 minutes and 15 seconds are 4.25 minutes, so it will make 102 copies in that time

3 0
2 years ago
Read 2 more answers
Other questions:
  • Carlos purchased an antique chair for $15 he later so this year for $27 to an antique dealer what was the percent markup of the
    15·2 answers
  • Which of the following are good ideas to use when gathering your resources? Check all that apply
    14·2 answers
  • In ΔMNO, the measure of ∠O=90°, the measure of ∠N=70°, and OM = 3.3 feet. Find the length of MN to the nearest tenth of a foot.
    12·2 answers
  • Let A = {10, 20, 30, 40, 50, 60} and B = {10, 40, 60}. What is A ∩ B?
    8·1 answer
  • The length of a rectangle is 3 meters less than twice it’s with right in equation to find the length of a rectangle?
    14·1 answer
  • Select the most likely answer for the coefficient of linear correlation for the following two variables: x = the number of hours
    8·1 answer
  • What is the missing length?
    7·1 answer
  • If the radius of the glass container is 2 inches and the height is 3 inches, how much wax will she need to fill the container?
    5·1 answer
  • How would you go about solving for (3g - 25)(-5)?
    11·1 answer
  • Surface area of a cube length: 10ft width: 7.5ft height: 12ft
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!