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
balandron [24]
2 years ago
12

HOW TO DO THIS QUESTION ​

Mathematics
2 answers:
nata0808 [166]2 years ago
7 0

9514 1404 393

Answer:

  64.2 cm²

Step-by-step explanation:

The length AC is found from ...

  Area of ACD = (1/2)(AC)(CD)

  80.5 cm² = (1/2)(AC)(14 cm)

  AC = 80.5 cm²/(7 cm) ≈ 11.5 cm

__

The area of ∆ABC is ...

  Area ABC = (1/2)(CB)(CA)sin(C)

  = (1/2)(19 cm)(11.5 cm)sin(36°) ≈ 64.2 cm²

sdas [7]2 years ago
3 0

Answer:

A ≈ 40.3 cm²

Step-by-step explanation:

The area of right Δ ACD is calculated as

A = \frac{1}{2} bh ( b is the base and h the perpendicular height )

Here A = 50.5, b = CD and h = AC , then

\frac{1}{2} × 14 × AC = 50.5

7 AC = 50.5 ( divide both sides by 7 )

AC ≈ 7.214

The area of Δ ABC is calculated as

A = \frac{1}{2} × BC × AC × sin36°

  = 0.5 × 19 × 7.214 × sin36°

  ≈ 40.3 cm² ( to 3 sf )

You might be interested in
Answer correctly plz
Ne4ueva [31]

Answer:

1/3

Step-by-step explanation:

Use the Up/to left or right rule to help you

Find a start point (or the one the gave you (3,2)) and then follow the line to the next point that crosses exactly over where to points cross (where poth x and y would be whole numbers) count how many times the point moved up, then how many time it moved left. Put the first over the second in fraction form and there is your slope.

8 0
2 years ago
Read 2 more answers
Using the defects method, which of these relationships represents the Law of Cosines if the measure of the included angle betwee
horrorfan [7]
Asked and answered elsewhere.
brainly.com/question/1410592

_____
Google doesn't recognize the terms "defects method" except in association with various postings of this same problem.
4 0
3 years ago
The bearing of Q from P is 150° and the bearing of P from R is 15°.if Q and R are 244metres and 324metres respectively from P.(i
Vedmedyk [2.9K]
CNBC cncncbcbfbfbfncbcbcnvncbbvbvn
5 0
3 years ago
The quadratic formula gives which roots for the equation 2x^2 + x - 6 = 0?
Jet001 [13]

Answer:

The roots are x = (\frac{3}{2}, -2), which is given by option C.

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

ax^{2} + bx + c, a\neq0.

This polynomial has roots x_{1}, x_{2} such that ax^{2} + bx + c = a(x - x_{1})*(x - x_{2}), given by the following formulas:

x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}

x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}

\Delta = b^{2} - 4ac

In this question, we have that:

2x^2 + x - 6 = 0

Which is a quadratic equation with a = 2, b = 1, c = -6. So

\Delta = 1^{2} - 4*2(-6) = 1 + 48 = 49

x_{1} = \frac{-1 + \sqrt{49}}{2*2} = \frac{6}{4} = \frac{3}{2}

x_{2} = \frac{-1 - \sqrt{49}}{2*2} = \frac{-8}{4} = -2

So the roots are x = (\frac{3}{2}, -2), which is given by option C.

3 0
3 years ago
Please please help !!!!!!!!
adoni [48]

Answer:

98°

142°

83°

97°

Step-by-step explanation:

m(arc)JL = 2 × 49° = 98°

m(arc)MJ = 360° - 120° - 98° = 142°

m<KJM = (120° + 46°)/2 = 83°

m<KLM = (360° - 120° - 46°)/2 = 97°

8 0
1 year ago
Other questions:
  • J.k. Rowling and R.L. Stone are both ready hunger games . J.k. Reads 35 pages every 2 hours and R.L. Reads 45 pages every 3 hour
    6·1 answer
  • Which parent function is f(x) = |xl?
    5·1 answer
  • (20 POINTS AND BRAINLIEST ANSWER!!!)
    12·1 answer
  • Is 5 ft , 12 ft, 15 ft , a right triangle or not?
    7·2 answers
  • see I was genius in my country india website and here no one is answering me when I am in so hurry you know. I am losing marks h
    5·2 answers
  • Who else feel this ↓ ↓ :(
    8·1 answer
  • PLZ HELP AGAIN DUE TODAY ANSWER CHOICES ARE<br> A.140<br> B.188<br> C.132<br> D.104
    13·1 answer
  • triumphant college is planning to increase the registration fee by 11.5%.if the registration fee is currently N$ 1000, how much
    6·1 answer
  • HELP!!! It's math!!!
    13·1 answer
  • Determine the unit rate of the following. 9 yards of material for 5 dresses The unit rate isyd / dress (Type a whole number or a
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!