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
seraphim [82]
3 years ago
12

What is the area of the triangle shown below

Mathematics
1 answer:
mina [271]3 years ago
6 0

Answer:

B

Step-by-step explanation:

Preliminary

From A, drop a perpendicular to the line BC.

The line BC has to be extended to your right.

Call the intersection point D.

Find angle ABD

ABD and ABC = 180                   They are supplementary angles.

140 + ABD = 180

ABD = 40

Find AD

Sin(theta) = AD/AB

AB = 25

Theta = 40

Sin(theta) = AD / 25

Sin(40) = 0.6428

0.6428 = AD / 25                       Multiply both sides by 25

AD = 25*0.6428

AD = 16.07

Find the Area of ABC.

The height = 16.07

The base = 40 m

Area = 40*16.07 / 2

Area = 321.4 m^2

You might be interested in
HELP ASAP 25 POINTS WILL MARK CORRECT ANSWER BRAINLIEST
zhenek [66]

In part 1 we chose

y = 10.4 x + 178

For 48 wheelbarrows,

y = 10.4(48)+180 = 679.2  

Answer: 679.2 liters of sand

7 0
4 years ago
WALLAHI HELP ME PLESEE WALLAHI HELP ME PLEASE I BEG ANYONE
Viktor [21]

9514 1404 393

Answer:

  • A: j = 25 +55h
  • B: m = 50 +30h
  • 1 hour

Step-by-step explanation:

We're going to say Job A is the charge at Jim's shop. For h hours, that charge will be the sum of the parts cost and the hourly charge:

  j = 25 +55h

Job B is the charge at Myron's shop. Similarly, that charge is ...

  m = 50 +30h

__

The two charges are equal when ...

  j = m

  25 +55h = 50 +30h

  25h = 25 . . . . . . . . . . . subtract 25+30h from both sides of the equation

  h = 1 . . . . . . . . . . divide by 25

The charges are the same at the two shops for 1 hour worked.

_____

<em>Additional comment</em>

You may be expected to write your equations using y for the charge and x for the hours. I like to use variable names that remind me what they stand for.

__

In general, when you have rates that have different fixed fees and different per-quantity costs, the "break even" quantity is the ratio of the difference in fees to the difference in per-quantity costs. Here the parts (fees) differ by $25, and the per-hour cost differs by $25, so the number of hours is 25/25 = 1 to make the charges equal.

5 0
3 years ago
My problem is.. 5/2 times 1/3
cestrela7 [59]

Answer:5/2 times 1/3

Step-by-step explanation:

were goated if you asner

6 0
4 years ago
Read 2 more answers
Evaluate inverse functions <br><br> Find the following values f^-1(f(3.14)) <br> F(f(-7))
Margaret [11]

Answer:

1. 3.14

Step-by-step explanation:

If we have

f {}^{ - 1} (f(x)

That just equals

x

For example, consider function

f(x) = 2 {}^{x}

The inverse of that function is

y = 2 {}^{x}

x = 2 {}^{y}

log_{2}(x)  =  log_{2}(2 {}^{y} )

log_{2}(x)  = y

So

f {}^{ - 1} (x) =  log_{2}(x)

If we compose the function, f(x) into f^-1(x).

We get

log_{2}(2 {}^{x})  = x

That proof of that.

1. Here x=f^-1(3.14)and f(3.14) cancel out so the answer is 3.14

2. We first find f(-7) which is -12,

We then find f(-12)= 5 so the answer here is 5.

8 0
3 years ago
If f(x)=25-2x, then f(5)=<br> Some please help
gizmo_the_mogwai [7]
F(x) = 25 - 2x

f(5) is pretty much the value of f(x) when x = 5

Plug x=5 into f(x)

f(5) = 25 - 2(5)
= 15

That's your answer.

Have an awesome day! :)
7 0
3 years ago
Other questions:
  • Can someone help me with this problem?
    12·2 answers
  • WILL MARK BRAINLIEST IF CORRECT!!!!!!!!!!! :) (IMAGE ATTACHED)
    10·2 answers
  • What is the equation in point-slope form of the line that passes through the point (3, −2) and has a slope of 23 ?
    10·1 answer
  • Divide 38 by 6. Round your answer to the nearest tenth. 6.4 6.3 6.2 6.0
    5·2 answers
  • Find the perimeter of the kite below, round to the nearest hundredth
    15·1 answer
  • What is the line of best fit? Why do we want the sum of the residuals to be as close to zero as possible?
    14·1 answer
  • How You divide 5.99 by 20
    8·2 answers
  • N(x)=20-x <br> If n(x)=18, find the value of x
    7·2 answers
  • A) The temperature in the morning was - 12º.<br> How many degrees warmer is - 9°?
    7·2 answers
  • I need the answer to 8/13x+-7=4 1/13
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!