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
Marat540 [252]
3 years ago
12

What is the value of the summation ∑i=14(2i+6i2)

Mathematics
1 answer:
Alex787 [66]3 years ago
5 0
You need to know the following:

sigma(i) = 1/2 * i * (i+1)

sigma(i^2) = 1/6 * i * (i+1) * (2i+1)

Therefore, the answer should be 14( i(i+1) + i * (i+1) * (2i+1)) = 14i(i+1)(2i+2) = 28i(i+1)^2
You might be interested in
Solve the equation.<br><br> –3x + 1 + 10x = x + 4<br><br> x = 1/2<br> x = 5/6<br> x = 12<br> x = 18
elena-s [515]
The correct answer is x=1/2
5 0
3 years ago
Read 2 more answers
If A = 41 degree, <br> Angle BDC = 58 degree, <br> and y = 8, Find x.
love history [14]
Check the pictures below.

make sure your calculator is in Degree mode, since the angles are in degrees.

4 0
3 years ago
Solve for y: 1/2(4y+6)=4-2(y-6)/3​
gizmo_the_mogwai [7]

Answer:

0.09

Step-by-step explanation:

hope it helps thank you

8 0
2 years ago
Read 2 more answers
For each container of tea, McKenzie uses 16 tea bags and 3 cups of sugar. If McKenzie uses 64 tea bags, how many cups of sugar w
cestrela7 [59]
So tis is a ratio  16 is to 3 or 16:3
if use 64 tea bags then how many cups of sugar so
turn 16:3 into fraction
16:3=16/3 or 3/16, it doesn't matter
then you want to find 64:x or 64/x or x/64

we know that 16/3=64/x because it tis an equivalent ratio
so 16/3=64/x
multiply both sdies by (3 times x)
16 times x times 3/3=64 times 3 times x/x
16 times x=64 times 3
16x=192
divide both sdies by 16
x=12
theanswer is 12 cups of sugar
5 0
3 years ago
HELP PLEASE I NEED IT ASAP
Akimi4 [234]

Answer:

849.9 cm squared

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • 10 POINTS Which expressions are equal to 6^3 x 2^6/2^3?
    5·1 answer
  • Listed below are amounts? (in millions of? dollars) collected from parking meters by a security service company and other compan
    5·1 answer
  • NEED HELP QUICK!!! Nicole works at the corporate headquarters for a major organization. Some days she feels as if she spends all
    6·1 answer
  • Cody is baking a square cake for his friend's wedding. When served to the guests, the cake will be cut into square pieces 1 inch
    14·1 answer
  • What is the equation of a line that is perpendicular to −x+3y=9 and passes through the point (−3, 2) ?
    15·1 answer
  • Please explain how you got this answer.<br><br> -Aparri
    8·1 answer
  • Evaluate the expression for the given values of the variables.
    9·1 answer
  • tyler has a rectangular garden measuring 12m by 20 m that he wants to split diagonally from corner to corner using a fence. how
    9·2 answers
  • ASAP HELP!! PLS PLS ILL GIVE U BRAINLIST !! DUE IN 5 mins :(
    14·1 answer
  • The diameter of a circle is 7 ft. Find its area to the nearest tenth.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!