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
asambeis [7]
3 years ago
10

Please help!!!!

Mathematics
1 answer:
nlexa [21]3 years ago
3 0

Answer:

225

Step-by-step explanation:

Using the basic components of summation ∑

∑n = \frac{1}{2} n(n + 1) and ∑1 = n

Thus

∑ (2n - 1) ← for n = 1 to 15

= ∑2n - ∑1

= 2∑n - ∑1

= 2 (\frac{1}{2} n(n + 1)) - n

= n(n + 1) - n ← Evaluate for n = 15 ( the upper value )

= 15 × 16 - 15

= 240 - 15

= 225

You might be interested in
I need help pleaseeeeee
-BARSIC- [3]

Answer:

30

Step-by-step explanation:

total area of triangle is 180

so if 97+53= 150 180-150= 30

hope this helped

plz mark brainlest

i wanna rank up!!!

6 0
3 years ago
Select the correct word form for 87,055​
sveticcg [70]

Answer: Eighty-seven thousand-fifty five

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Write down the letter of the shape that is congruent to the shaded shaPe
guapka [62]

Answer:

E looks like it is most congruent

Step-by-step explanation:

7 0
2 years ago
Frank has a 2-digit number on his baseball uniform. the number is a multiple of 10 and has 3 for one its factors. what three num
Feliz [49]
A. What three numbers could possibly be on his uniform.
B. Probability of being a multiple of 10 and is two digits and has a 3 as a factor.
C. Frank has a 30 on his uniform. The number is a multiple of 10 and one factor of the number is 3.
4 0
3 years ago
What is 992,449 rounded to the nearest hundred thousands
Rzqust [24]
992,449 rounded to the nearest hundred thousands is 1,000,000. The reason why is because the 9 in the ten thousands place is pushing up the 9 in the hundred thousands place. 



8 0
3 years ago
Read 2 more answers
Other questions:
  • A model is made of a car. the car is 3 meters long and the model is 3 centimeters long. what is the ratio of the length of the c
    6·1 answer
  • This is really hard please help
    7·2 answers
  • A rectangle and a triangle have equal areas. The length and width of the rectangle are 24 cm and 8 cm respectively. If the base
    15·1 answer
  • The length of a rectangle is 6 times its width. the perimeter has to be more than 110 feet. What inequality can be solved to fin
    11·2 answers
  • Which graph shows the equation y = x - 2?
    7·1 answer
  • Use limits to find the area of the region bounded by the graph f(x)=4-2x^3 , the x-axis , and the vertical lines x=0 and x=1
    15·1 answer
  • X(3, 4); scale factor = 7
    7·2 answers
  • Evaluate m – n if m = –16 and n = 28
    8·2 answers
  • Free 100 points ʕ•ᴥ•ʔ
    15·2 answers
  • A political adviser stood at the corner of 1st Avenue and Main Street and asked every 10th person who walked past if they intend
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!