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
Elodia [21]
3 years ago
12

Help me plzzzz:......

Mathematics
1 answer:
Over [174]3 years ago
5 0
Don't have a calculator right now but you wanna divide the 2 numbers that should get you your answer.
You might be interested in
Please help with this
inysia [295]

Answer:

S_{n}<em> = n² + 4n ; n = 11 </em>

Step-by-step explanation:

S_{n} = \frac{n}{2} [2 a_{1} + (n - 1)d]

~~~~~~~~~

a_{1} = 5

d = 7 - 5 = 2

S_{n} = \frac{n}{2} [ 2(5) + 2(n - 1)] = \frac{n}{2} ( 8 + 2n ) = 4n + n²

S_{n}<em> = n² + 4n</em>

n² + 4n = 165

n² + 4n - 165 = 0

(n + 15)(n - 11) = 0 ( n ≥ 0 ) ⇒ <em>n = 11</em>

6 0
3 years ago
Given the function f(x) = x2 and k = –1, which of the following represents a function opening downward?
WITCHER [35]
<span>f(x) = ax2+bx+c, is quadratic equation
</span><span>function opening downward if the a<0, 
</span><span>kf(x) = -x², a= -1<0  
so the answer is </span><span>B.kf(x) </span><span>

</span>
5 0
3 years ago
Raven's calculator is 10 centimeters long.
MrRa [10]

Answer:

3.93701 inches

Step-by-step explanation:

To be honest, I just looked up centimeters to inches and plugged 10 in.

7 0
2 years ago
the waiter places a bowl of soup in front of lacy in a counterclockwise direction she passes the soup 90° the person receiving t
dybincka [34]

haifia is the answer did it on test

5 0
3 years ago
NEED HELP FAST PLEASE!!!
Vinil7 [7]

Answer:

I can't see it that good can you text it in please

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • For a sequence an=an-1+an-2 and a1=1, a2=2, find its first four terms<br>​
    14·1 answer
  • A company charges $211.25 for 5 trees and 15 shrubs, The company charges$15.25 more for a tree than a shrub. How much does each
    15·1 answer
  • You have eleven books but only have room for six of them on your shelf. This means that you can arrange the books 39,916,800 way
    7·1 answer
  • Why does it matter if the exponent is in the parentheses?
    12·1 answer
  • How do I evaluate an expression?
    6·1 answer
  • The ratio of cups of water to cups of milk in a recipe is 1 to 3
    14·1 answer
  • The difference of two numbers is 1. their sum is 19. find the numbers.
    12·2 answers
  • Find the sum of a polynomials -4xsquare 9x-3 and 7xsquare-5x 4
    14·1 answer
  • The accounts in the ledger of Marigold Corp. contain the following balances on July 31, 2019. Accounts Receivable $6,870 Prepaid
    11·1 answer
  • Find the values of x and y.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!