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
mash [69]
3 years ago
9

Someone plz help! Photo Above

Mathematics
1 answer:
TiliK225 [7]3 years ago
4 0

Answer:

  • -704

Step-by-step explanation:

<u>Given the sequence</u>

  • A = -4 - 6i

<u>To find </u>

  • Sum of terms from i=5 to i=15
<h3>Solution</h3>

We see the sequence is AP

<u>The required sum is</u>

  • S₅₋₁₅ = S₁₅ - S₄

<u>Using sum of AP formula</u>

  • Sₙ = 1/2n(i₁ + iₙ)

<u>Finding the required terms</u>

  • i₁ = - 4- 6 = -10
  • i₄ = -4 -6*4 = - 28
  • i₁₅ = -4 -6*15 = -94

<u>Getting the sum</u>

  • S₄ = 1/2*4*(-10 - 28) = -76
  • S₁₅ = 1/2*15*(-10 - 94) = -780
  • S₅₋₁₅ = S₁₅ - S₄ = -780 - (-76) = - 704
You might be interested in
Find the area of the figure. round your answer to the nearest hundredth
liraira [26]

Answer: 84.14

Step-by-step explanation:

Area of the rectangle is L*W=B*H

14*5=70

To find the area of the half circle we must use the formula pi r^2/2

r=radius

and the radius is 6 because we add 4 and 4 and need to get to 14

because the line below it is 14 and it is a rectangle so the lengths are the same.

Diameter=6

So radius =3

pi (3)^2/2=

9/2 pi + 70=

84.14

6 0
3 years ago
Read 2 more answers
Match the graph of the equation: y=−6x2−12x−7
Vsevolod [243]

Answer:

Step-by-step explanation:

What graph

8 0
3 years ago
7x-5y=-15 and -14x+7y=0 Solve by elimination
geniusboy [140]

Answer: (5,10)

Step-by-step explanation:

multiply first equation with 2 and add it to second to eliminate X

7x-5y=-15  //*2

14x-10y=-30

-14x+7y=0

----------------

-3y=-30

y=-30/-3

y=10

7x=50-15

7x=35

x=35/7

x=5

4 0
3 years ago
Suppose that you have $10,000 to invest. Which investment yields the greater return over 6 years:
inna [77]
5.5% quarterly would give you slightly more.

8 0
2 years ago
Insert &lt;, &gt;, or = in the appropriate space to make a true statement.
Harman [31]

Answer:

  >

Step-by-step explanation:

1 - 3 ?? -4

-2 ?? -4

The appropriate symbol for this ?? relation is >.

  1 -3 > -4

6 0
3 years ago
Other questions:
  • Li needs to buy 2 kilograms of apples. If she buys 9 apples that each weigh approximately 150 grams, will she have enough? Expla
    14·1 answer
  • Aubrey's dinner cost $85. She tips the waitstaff 30% for excellent service.
    5·2 answers
  • Determine if the graph is symmetric about the x-axis, the y-axis, or the origin. r = 2 cos 3θ
    10·2 answers
  • The points (0, −6) and (−10, 4) lie on the graph of a linear function.
    10·2 answers
  • WILL RATE 5 STAR AND GIVE BRAINLIEST TO FIRST RIGHT ANSWER
    6·1 answer
  • I need to know the answer ASAP
    9·2 answers
  • Please look at the picture and help me with this question
    11·1 answer
  • Find x and decide if that side (with the x) is an Altitude
    9·1 answer
  • Please answer the following ​
    12·2 answers
  • Mike sold half of his comic books and then bought 9 more. he now has 14. how many did he begin with?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!