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
Romashka-Z-Leto [24]
3 years ago
14

How do you calculate the area of triangle DEF?

Mathematics
2 answers:
cricket20 [7]3 years ago
8 0
First you need to solve for angle F then you can use 1/2acSinB. If you haven't done this you can also use the Pythagoras theorem and solve for the unknown side once you do that you can just use 1/2 b*h
Kazeer [188]3 years ago
4 0
Area equals 1/2  ( base times height )
You might be interested in
Lisa is cooking muffins. The recipe calls for 7 cups of sugar.  She has already put in 2 cups.  How many more cups does she need
Tresset [83]

the answer is 5. 7-2 is 5.

4 0
3 years ago
What is the volume of a cone that has a height of 7 mm and a radius of 3 mm?
vaieri [72.5K]
<span>So we want to know the volume V of a cone with a height h=7 mm and of radius r=3 mm rounded to the nearest hundreth. We need the formula for the volume of a cone: V=(1/3)*pi*r^2*h. Now we simply input the numbers and get: V=65.94 mm^2 and that is rounded to the first hundreth.</span>
7 0
3 years ago
Find m∠B. Put the answer below.<br> m∠B =
kkurt [141]

\huge\underline{Answer -}

we know that

tan\:θ \:= \frac{perpendicular}{base}\\

thus in the question ,

\tan(B)  =  \frac{perpendicular}{base}  \\  \\   \tan(B)  =  \frac{\cancel{24} \sqrt{3} }{\cancel{24}}  =  \sqrt{3}  \\  \\  \tan(60)  =  \sqrt{3}

therefore , m∠B = 60°

hope helpful~

8 0
2 years ago
What is the missing length??
amid [387]

Answer

The missing length is 10

Step-by-step explanation:

Represent the missing length with x

The sides of the given shape are directly proportional.

Mathematically:

(15 + x) to (12 + 8) and x to 7

Represent as a ratio:

(15 + x) : (12 + 8) = x : 8

15 + x : 20= x : 8

Convert to fraction

\frac{15 + x}{20} = \frac{x}{8}

Cross Multiply:

(15 + x)*8 = 20 * x

120 + 8x = 20x

Collect Like Terms

20x - 8x = 120

12x = 120

Solve for x

x = \frac{120}{10}

x = 10

<em>The length of the missing side is 10</em>

4 0
3 years ago
D(1)=3 d(n) = d(n-1) - 14 what is the third term in the sequence
Aliun [14]
2nd term  =  3 - 14 = -11
3rd tern = -11-14 = -25 answer
6 0
3 years ago
Other questions:
  • What does 3k-5=7k-33 equal
    5·1 answer
  • Please Help!!! due today!!! will mark brainliest!!!!!!!!
    11·2 answers
  • 9/29/2020
    15·1 answer
  • Ugh so.. i am bad at math
    10·1 answer
  • 250% converted into a decimal
    8·2 answers
  • 7 less than 3 times a number m
    9·2 answers
  • Please help me with this. I think I understand it and know what it is but I just want someone to check it for me to see if I'm r
    10·1 answer
  • Ishiro bought a bag of 50 jellybeans. The table shows how many of each color were in the bag. Ishiro will pick one jellybean fro
    8·1 answer
  • How do I graph this problem X+2y= -2
    5·1 answer
  • A relationship between x and y is defined by the equation y=3x +1/2 which statements are true of this relationship? Select all t
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!