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
alexgriva [62]
3 years ago
12

Average of 766 and 878

Mathematics
1 answer:
Greeley [361]3 years ago
7 0
(766+878)÷2=1644÷2=822
You might be interested in
Please help I don’t know how to solve these... can anyone explain? I’m desperate
Elenna [48]

Answer:

1.) 16.5

2.) 24.2 ft

3.) 10.8 ft

Step-by-step explanation:

1.) So first you need to use Heron's formula

S = (A + B + C)/2

So

S = (17 + 17 + 8)/2

S = 21

Now

Area  = \sqrt{S(S - A)(S-B)(S-C)}

So

\sqrt{21(21-17)(21-17)(21-8)}

So the Area is equal to 66.1

Now to find the height we use the Area of the triangle formula

A = 1/2 B*H

66.1 = 1/2(8) * H

66.1 = 4H

H = 16.525

So the height of the triangle is 16.5 units tall

2.) For this question you just use the Pythagorean theorem.

a² + b² = c²

So 22² + 8² = c²

484 + 64 = c²

548 = c²

\sqrt{584} = c

c = 24.1660919472 ft

So the length of the wire is 24.2 ft long

3.) Again this is the Pythagorean theorem.

a² + b² = c²

So 10² + 4² = c²

100 + 16 = c²

116 = c²

\sqrt{116} = c

c = 10.7703296143 ft

So the length of the banner is 10.8 ft long

7 0
3 years ago
The lines shown below are perpendicular.
elena-14-01-66 [18.8K]
The answer is True. In geometry, perpendicular lines are defined as two lines that meet or intersect each other at right angles (90°).
4 0
1 year ago
Read 2 more answers
Find the total area the regular pyramid.<br><br><br><br> T. A. =
alexira [117]
The answer would be   A = 54raiz (3) + 18raiz (91)
Formula:
 A = Ab + Al Where, Ab=base area A= lateral area

 The area of the base is: Ab = (3/2) * (L ^ 2) * (root (3)) Where, L= side of the hexagon. Substitute: Ab = (3/2) * (6 ^ 2) * (root (3)) Ab = (3/2) * (36) * (root (3)) Ab = 54raiz (3)


 The lateral area is: Al = (6) * (1/2) * (b) * (h) Where, b= base of the triangle h= height of the triangle Substitute: Al = (6) * (1/2) * (6) * (root ((8) ^ 2 + ((root (3) / 2) * (6)) ^ 2)) Al = 18 * (root (64 + 27)) Al = 18raiz (91)

 The total area is: A = 54raiz (3) + 18raiz (91)

6 0
3 years ago
Read 2 more answers
This is very important!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
SpyIntel [72]

Answer:

Step-by-step explanation:

5 0
3 years ago
9a+b-8c-2(a+3b-c) simplified
alekssr [168]

Answer:

The correct simplified answer for 9a + b - 8c - 2 (a + 3b - c) would be 7a - 5b - 6c

Step-by-step explanation:

Hope this helps! Sorry if there is no explanation, I am kinda in a rush.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Work out each map scale as a map ratio
    9·1 answer
  • How to solve a system of equations using elimination
    14·2 answers
  • 2. Write an equation of the line that passes through the<br> points (1,3) and (-1,1).
    6·1 answer
  • Carly ate 1/4 of the pizza.If the pizza has eight slices,how many slices are left
    13·2 answers
  • Which of the following uses the distributive property correctly?
    10·1 answer
  • For f(x)=3x+2 and g(x)=x^2-6, find (f o g)(4)
    13·1 answer
  • Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC =16 and DC=5 what is the length of BC in the simplest ra
    14·1 answer
  • Matt wants to buy a pen that costs $2.35.
    7·1 answer
  • This had me confused i need big help!!!!
    6·1 answer
  • Students who prefer rock or classic rock to students who prefer all other types of music​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!