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
Varvara68 [4.7K]
3 years ago
10

Find the unknown side lengths and angle measures.

Mathematics
1 answer:
seropon [69]3 years ago
6 0

Answer:

Step-by-step explanation:

<em>m∠D</em> = 90° - 51° = <em>39°</em>

sin E = \frac{DE}{DF} ⇒ DE = DF × sin E

<em>DE</em> = 18 sin51° ≈ <em>14.0 ft.</em>

cos E = \frac{EF}{DF} ⇒ EF = DF × cos E

<em>EF</em> = 18 × cos51° ≈ <em>11.3 ft.</em>

You might be interested in
What is the length of leg s of the triangle below?
Alchen [17]

The question is not well formatted. A ell formatted version of the question type is attached and solved below :

Answer:

10

Step-by-step explanation:

Using trigonometry :

Taking the angle 45°

From trigonometry :

Sin θ = opposite / hypotenus

Opposite = s ; hypotenus = 10√2

Sin 45 = s / 10√2

Recall :

Sin 45 = 1/√2

We have ;

1/√2 = s / 10√2

s = 10√2 * 1/√2

s = 10√2 / √2

s = 10

6 0
3 years ago
So I finished the graph, But I need help making the table please help whoever answers correctly, I will mark brainliest 10. Corn
Monica [59]

Answer:

Here it is. The table is on the first one at the bottom.

Step-by-step explanation:

4 0
3 years ago
Last time, one out of every 4 students in our class was absent. This time, after Jen came back, only one out of every 5 students
VMariaS [17]

Answer: There are 20 students and 4 students are not here today.

Step-by-step explanation:

If the number of students = 4

Let the number of students be 'x'.

Fraction of students absent = \dfrac{x}{4}

If the number of students = 5

Fraction of students absent = \dfrac{x}{5}

And Jen came back,

So, the fraction of student absent is also written as

\dfrac{x}{4}-1

According to question, it becomes,

\dfrac{x}{5}=\dfrac{x}{4}-1\\\\\dfrac{x}{5}=\dfrac{x-4}{4}\\\\4x=5(x-4)\\\\4x=5x-20\\\\4x-5x=-20\\\\-x=-20\\\\x=20

Hence, there are 20 students in our school.

And number of students are not here today is \dfrac{20}{5}=4

3 0
3 years ago
An object is dropped off a building that us 144 feet tall. After how many seconds does the object hit the ground? (s= 16t^2)
denis23 [38]
Given 
s=16t^2 
where
s=distance in feet travelled (downwards) since airborne with zero vertical velocity and zero air-resistance
t=time in seconds after release

Here we're given
s=144 feet
=>
s=144=16t^2 
=> 
t^2=144/16=9
so
t=3
Ans. after 3 seconds, the object hits the ground 144 ft. below.
6 0
4 years ago
Read 2 more answers
Please help me with this Ixl answer.Please answer this correctly I have to show them the
frosja888 [35]

Hello!

Let's put this as a system of equations.

r= 8+g

r+g=14

Let's plug our r value into the second equation and solve for g.

8+g+g=14

8+2g=14

Now we subtract 8 from both sides.

2g=6

We divide both sides by 2.

g=3

Therefore, he has 3 green peppers.

I hope this helps!

5 0
4 years ago
Read 2 more answers
Other questions:
  • Geometry...please help
    7·1 answer
  • Please help with this question
    11·1 answer
  • Can someone help me with this question please?
    13·1 answer
  • Triangle XYZ is rotated 90° clockwise about the origin.
    14·1 answer
  • The probability of rain is 2/5, what is the complementary event and its probability?
    6·1 answer
  • What is the volume of a sphere with a diameter of 4 meters? (Use 3.14 for π.)
    7·1 answer
  • 7m-5m-6<br> Simplify the equation
    5·2 answers
  • What is 1/7 of 28.....​
    10·1 answer
  • I need help please help me.
    14·1 answer
  • 2 pounds of grapes cost $8 How do they cost per pound? How many pounds of grapes do you get per dollar?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!