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
Ivenika [448]
2 years ago
15

Why is there a 1/2 in this formula for the area of a trapezoid?

Mathematics
1 answer:
aleksandrvk [35]2 years ago
7 0

A simple answer is that any given trapezoid with height h and length of the parallel lines a and b, is half of a parallelogram with an area of (a+b) x h. Since the trapezoid is half of this, it is h(a+b)/2

You might be interested in
What is a geometric sequence and arithmetic sequence?<br><br> ~MUST EXPLAIN~
Vadim26 [7]
A geometric sequence is one that involves addition or subtraction. One example would be "In an auditorium, the 1st row has 25 seats. The 2nd has 30. The 3rd has 35. How many does the 4th have? Take the formula, x + 5. All you do is simply add 5. 

An arithmetic sequence is one that involves multiplication or division. For example, "Jon receives 5 dollars each week. If he waits for 5 months, how much money will he have? Honestly, all you have to do is think about the formula. x * 5. x would be the number of weeks. 

I know my answer is not as good as the verified one, but it is simpler and easier to understand. I apologize if it isn't good enough. 
6 0
3 years ago
Write the linear equation
valina [46]

Answer:

y=-3/2x+4

slope=-3/2

y-int= 4

6 0
3 years ago
Suppose that 8% of the general population has a disease and that the test for the diesease is accurate 70% of the time. What is
balu736 [363]

Answer:

P = 0.332

Step-by-step explanation:

The probability of having the disease is 0.08

The probability that the test predicts with accuracy is 0.7.

We need to find the probability that the test positive for the disease.

Several cases may occur.

Case 1.

You have the disease and the test predicts it accurately

P_1 = 0.08(0.7) = 0.056

Case 2

You do not have the disease and the test predicts that you have it

P_2 = 0.92(0.3) = 0.276

Then the probability that the test predicts that you have the disease is the union of both probabilities P1 and P2

P = P_1 + P_2\\\\P = 0.056 + 0.276\\\\P = 0.332

8 0
3 years ago
Solve the equation by factoring the expression 8x2 − 50 and then using Zero Product Property. 8x2 − 50 = 0 Hint: You may have to
Mnenie [13.5K]

Answer:

this equation id 2=0 meaning no solution

Step-by-step explanation:

6 0
3 years ago
When rolling a pair of dice, what is the probability (as a percent) that each die will land on an even number?
ASHA 777 [7]

Answer:

The probability of getting an even number at the first die is 1/2 (as the probability of even = the probability of odd = 1/2); 2. The probability of getting a total of 8 is 5/6^2, as there are 5 different favorable scenarios: (2,6), (6,2), (3,5), (5,3) and (4,4);

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • ..........................
    13·2 answers
  • Recall that two angles are complementary if the sum of their measures is​ 90°. Find the measures of two complementary angles if
    7·1 answer
  • An integer is 3 less than 5 times another. If the product of the two integers is 36, then find the integers.
    14·2 answers
  • What was the temperature at 6 p.m?
    8·2 answers
  • Greta had $2,992 in a savings account with simple interest. She had opened the account with $2,200 exactly 4 years earlier. What
    15·1 answer
  • Find the distance between these two points (5,9) and (-7,-7)
    12·1 answer
  • Why are all the questons just for 5 points no one choses higher
    15·1 answer
  • HELP I MEED THE ANSWERBBBBEKFNAKDKDJNWF
    11·1 answer
  • The different between three times a number and five is equal to the product of four times the number increased by two.
    14·1 answer
  • Can anyone please help me with 8th grade math? I will give BRAIN!!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!