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]
3 years ago
10

Please Help!

Mathematics
2 answers:
Harrizon [31]3 years ago
7 0
Using the Herons formula, calculate the area of the parallelogram to the nearest tenth of a square unit.

Area = 36.7 square units.
alisha [4.7K]3 years ago
6 0

Diagonal of the parallelogram divides the parallelogram in to two equal areas.

So area of parallelogram = 2(area of triangle)

According to the given diagram,

AB= 8, AD = 5 and BD = 11

So according to the Heron's formula,

Area of triangle = \sqrt{s(s-a)(s-b)(s-c)}\\\\where,\\ s =\frac{a + b + c }{2}

and a, b and c are the three sides of the triangle

Area of triangle ABD =s=\frac{8 + 5 + 11}{2} \\\\s = \frac{24}{2}\\\\s = 12Area of triangle ABD = \sqrt{12(12 - 8) (12 - 5) (12 - 11)}\\\\Area of triangle ABD = \sqrt{12(4) (7) (1)}\\\\Area of triangle ABD = \sqrt{336}\\\\Area of triangle ABD = 18.33

So, area of parallelogram ABCD = 2(area of triangle ABD)

area of parallelogram ABCD = 2 (18.33)

area of parallelogram ABCD = 36.66

area of parallelogram ABCD = 36.7 sq. units

You might be interested in
Evaluate the expression below when y = -3.<br><br> 2y + 7<br><br> -4y − 10
Sedbober [7]
1) 1
2) 2

hope this helped :)
4 0
3 years ago
Plss help this is due tomorrow !! :((​
VladimirAG [237]

Answer:

A y= -3/4+6

Step-by-step explanation

I hope this helps good luck

I'm 100% sure

Good luck god bless you pass have a nice day

3 0
2 years ago
Read 2 more answers
If 4 books equals to 5 months how many books equals 15 months
Murrr4er [49]

Answer:

12 months

Step-by-step explanation:

Based on the question

4 books equals to 5 months

x books equals to 15months

To determine the value of X we will have to cross multiply,it means

5x=15×4

5x=60

Divide both sides by 5

x=12

Therefore,x=12

Which means 12 books equals to 12 months

8 0
3 years ago
What’s the answer guys?
never [62]

Answer:

the first one is the answer, with maybe the third if you can choose multiple.

Step-by-step explanation:

Let's go throught hese one at a time.  First though it is important to note that the poitns look like they are going upward.  So we want a relationship that it makes sense  as one increases so does the other.

the amount of money made made compared to the amount of items sold

So, pretending we run a store.  Does it make sense that if we make more money more items were sold?  I would say so.

the amoutn of ink left in a pen compared to the time using it

Doe sit make sense that as the amount of ink increases the time using it increases?  i would say no, because ink usually decreases the more it is used.

the amount of money in your account compared to the number of stores that you shop at

Does it make sense that if you have more money in your account you shop at more stores?  I think so, though the first one still makes the most sense if you can only pick one.  Since it doesn't seem directly to imply that, I would say it makes more sense that you just but more in general, not necessarily from more stores.

the number of goals scored in a soccer match compared to the number of red cards given

does it make sense that more goals would also have more red cards?  i don't think so, though I don't know soccer that much.  it doesn't seem like goals mean there should be any more red cards.

So in total it seems like the first one is the answer, with maybe the third if you can choose multiple.  

4 0
3 years ago
20 points<br> How on Earth am I supposed to do this
goblinko [34]

Answer: -89

Step-by-step explanation:

So your equation is

- 9(a) - 7(x) - 9(c) - 9(b) - 7(y)

You know that (a) (b) and (c) = -1

You also know that (x) and (y) = 7

So, when you put this into the equation, it will look like this:

- 9(-1) - 7(7) - 9(-1) - 9(-1) - 7(7)

When you work that out you will get left with your answer, which is -89.

HOPE THIS HELPS!!!

3 0
3 years ago
Other questions:
  • State whether the following are describing distance (d), velocity (v), or acceleration (a)
    10·1 answer
  • What is the solution to this equation?<br><br> 8x - 5 (x-3) = 18
    9·1 answer
  • A garden shop determines the demand function q = D(x) = 5x + 200 / 30x + 11 during early summer for tomato plants where q is the
    13·1 answer
  • Which statement is true
    8·1 answer
  • Sabrina threw a coin from a building 160 feet high at an initial speed of 30 feet per second. How many seconds will it take the
    7·1 answer
  • The two rectangles havr the same area work out the value of x
    7·2 answers
  • A model of a car has a scale of 3 cm : 2 m. The length of the actual hood of the car is 1 m. What is the length of the hood of t
    10·1 answer
  • I need help please help me
    6·1 answer
  • Graph: y=-4sin(2x)+1 where the x axis starts at 30​
    11·1 answer
  • Please help I’m having trouble understanding this question
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!