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
Sliva [168]
3 years ago
13

Help please tell me what the answer is ASAP

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
7 0

Answer:

The approximated length of EF is 2.2 units ⇒ A

Step-by-step explanation:

<em>The tangent ratio in the right triangle is the ratio between the opposite side to the adjacent side of one of the acute angle in the triangle</em>

In the given figure

∵ The triangle DFE has a right angle F

∵ The opposite side to angle D is EF

∵ The adjacent side to angle D is DF

→ By using the tangent ratio above

∴ tan(∠D) = \frac{EF}{DF}

∵ DF = 6 units

∵ m∠D = 20°

→ Substitute then in the ratio above

∴ tan(20°) = \frac{EF}{6}

→ Multiply both sides by 6

∴ 6 tan(20°) = EF

∴ 2.183821406 = EF

→ Approximate it to the nearest tenth

∴ 2.2 = EF

∴ The approximated length of EF is 2.2 units

You might be interested in
Equivalent ratio for 5:9
vfiekz [6]
10:18 is an equivalent ratio.
5 0
3 years ago
All Five of these Questions = 90 Points. Need done ASAP.
vichka [17]

Answer:

ma ma ھگدفسخ टगाई samje ke hamreبھا मे

hoho gana ga

4 0
3 years ago
What the second answer ​
Debora [2.8K]

Answer:

1. y' = 3x² / 4y²

2. y'' = 3x/8y⁵[(4y³ – 3x³)]

Step-by-step explanation:

From the question given above, the following data were obtained:

3x³ – 4y³ = 4

y' =?

y'' =?

1. Determination of y'

To obtain y', we simply defferentiate the expression ones. This can be obtained as follow:

3x³ – 4y³ = 4

Differentiate

9x² – 12y²dy/dx = 0

Rearrange

12y²dy/dx = 9x²

Divide both side by 12y²

dy/dx = 9x² / 12y²

dy/dx = 3x² / 4y²

y' = 3x² / 4y²

2. Determination of y''

To obtain y'', we simply defferentiate above expression i.e y' = 3x² / 4y². This can be obtained as follow:

3x² / 4y²

Let:

u = 3x²

v = 4y²

Find u' and v'

u' = 6x

v' = 8ydy/dx

Applying quotient rule

y'' = [vu' – uv'] / v²

y'' = [4y²(6x) – 3x²(8ydy/dx)] / (4y²)²

y'' = [24xy² – 24x²ydy/dx] / 16y⁴

Recall:

dy/dx = 3x² / 4y²

y'' = [24xy² – 24x²y (3x² / 4y² )] / 16y⁴

y'' = [24xy² – 18x⁴/y] / 16y⁴

y'' = 1/16y⁴[24xy² – 18x⁴/y]

y'' = 1/16y⁴[(24xy³ – 18x⁴)/y]

y'' = 1/16y⁵[(24xy³ – 18x⁴)]

y'' = 6x/16y⁵[(4y³ – 3x³)]

y'' = 3x/8y⁵[(4y³ – 3x³)]

6 0
2 years ago
Which of these is the correct root of the word judicial?
Kobotan [32]
Pretty sure law. judicial means of, by, or appropriate to a court or judge.
6 0
2 years ago
12. Tamera wants to try out for volleyball, the coaches told her she must raise her grades to
Darina [25.2K]

Answer: x = 83 (x representing the next homework assignment)

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Ind an equation for the nth term of the arithmetic sequence.<br><br> a14 = -33, a15 = 9
    12·1 answer
  • Julie planted a rectangular garden that is 20 feet long. She placed 56 feet of fencing around her garden. Draw and label a sketc
    11·1 answer
  • 6. If x + 2 is the only factor of the polynomial P(x),then P(2) is:
    12·2 answers
  • Hello I need help with concavity of graphs. I have included a picture of the 4 problems I would love to be checked to see if the
    9·1 answer
  • What is ten minus one
    11·1 answer
  • since there are 5,280 feet in one mile and 3.3 feet in one meter how many meters per second are equivalent to 50 miles per hour
    15·1 answer
  • Write an equation in point slope form of equation of line<br> point (7,10) and has a slope of -2?
    11·1 answer
  • If Brittany walks 4 miles in 50 minutes, then Brittany will walk how far in 90 minutes if she walks at the same speed the whole
    13·2 answers
  • C) The ratio between an exterior angle and an interior angle of a polygon is 1:5.
    14·1 answer
  • Find the 90th term of the arithmetic sequence, <br> 8.9, 13.6, 18.3, 23, …
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!