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
LiRa [457]
3 years ago
10

Find the area of ΔABC.

Mathematics
1 answer:
zysi [14]3 years ago
6 0

Answer:

Step-by-step explanation:

You know two sides of the triangle and the angle between them, so use the Law of Cosines to solve the triangle.

a² = √(b²+c² - 2bc·cosA)

= √(9²+7.8² -  2·9·7.8·cos(32°)

≅ 4.8

Then use Heron's formula to calculate the area.

semiperimeter s = 0.5×(a+b+c) ≅ 10.8

area = √(s-(s-a)(s-b)(s-c)) ≅ 18.6 square units

You might be interested in
What percent of 150 is 162
Novay_Z [31]
To find a percentage of a number, you divide by that number.
So to find what percent of 150 162 is, you divide 162 by 150
162 ÷ 150 = 1.08
Now, to find the percentage, we take the decimal and move the point two places to the right.
1.08 = 108%
162 is 108% of 150.
5 0
3 years ago
Find s(2t - 4) for s(t) = 3t - 7 <br> A)6t - 19 B) 6t - 18 C) 5t - 11 D) 5t - 19
asambeis [7]
Hello,

Answer A

s(x)=3x-7
s(2t-4)=3*(2t-4)-7=6t-12-7=6t-19
3 0
4 years ago
The cost of a student ticket tot he school play is 7$ write an equation that correctly relates the total cost, c, for a particul
SVEN [57.7K]
An equation that fit this is c=7s
4 0
3 years ago
Read 2 more answers
Please help need this for today
Cloud [144]
All will apply except for (A, C, and E) because those lengths are less than 4/6. So (B, D and F) are the correct answers.
6 0
3 years ago
Please help asap!!!!!
Andreyy89

Answer:

HL

Step-by-step explanation:

the shared hypotenuse and congruent legs of the triangle means it is congruent by HL

you might think that SSA is also doable because there is a right angle in both triangles but it is not

a way to remember this is that "there are no donkeys in geometry" because SSA backwards is another word for donkey

5 0
3 years ago
Read 2 more answers
Other questions:
  • Examine the steps for finding the product of (224)(16) in the example shown.
    11·1 answer
  • Use partial quotients to divide 198➗9 show the work
    5·1 answer
  • I'm so lost I need help​
    10·2 answers
  • Owen and Eva spent the same amount of money making copies. Owen spent 14 cents per copy, while Eva spent 10 cents per copy. What
    12·2 answers
  • Ms Melissa and Ms ryanne went for a walk and they got back at 8:02am their walk was actually 45 minutes what time did they leave
    12·1 answer
  • Kala's final exam has true/false questions, worth 3 points each, and multiple choice questions, worth 4 points each. Let x be th
    14·1 answer
  • A baseball is "popped" straight up by a batter with an initial velocity of 32 ft/sec. The height of the ball above ground is giv
    13·1 answer
  • I have this question that i dont get plz help-2|2.2x-3.3|=-6.6
    6·2 answers
  • I built a toy model of my car that is 15 inches long.If my actual car is 20 feet long.What is the scale distance between the toy
    14·1 answer
  • Help me solve this two column proof!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!