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
Softa [21]
1 year ago
6

Suppose the average of 15 consectutive numbers is 15. What is the average of the first five numbers of the set?

Mathematics
1 answer:
Marina86 [1]1 year ago
7 0
15x15= 225

15x + 105= 225

15x= 225-105

15x= 120

X=8

X+ (x+1) + (x+2) + (x+3)…etc all the way up too +(x+14)=225

The first five numbers of the set: 8, 9, 10, 11, 12
You might be interested in
What is the answer 6v(2v + 3)
Firlakuza [10]
See attached picture


Hope this helps

6 0
3 years ago
Read 2 more answers
Prove that 1+cosA/sinA + sinA/1+cosA=2cosecA
Alla [95]
\frac{1+cos\alpha}{sin\alpha}+\frac{sin\alpha}{1+cos\alpha}=2cosec\alpha\\\\L=\frac{(1+cos\alpha)(1+cos\alpha)+sin\alpha\cdot sin\alpha}{sin\alpha(1+cos\alpha)}=\frac{1+2cos\alpha+cos^2\alpha+sin^2\alpha}{sin\alpha(1+cos\alpha)}\\\\=\frac{1+2cos\alpha+1}{sin\alpha(1+cos\alpha)}=\frac{2+2cos\alpha}{sin\alpha(1+cos\alpha)}=\frac{2(1+cos\alpha)}{sin\alpha(1+cos\alpha)}\\\\=\frac{2}{sin\alpha}=2\cdot\frac{1}{sin\alpha}=2cosec\alpha=R
5 0
3 years ago
The area of a regular hexagon circumscribed about a circle with radius 2 is _______________.
Yuliya22 [10]

Answer:

relate the values and find the correct answer

7 0
3 years ago
Read 2 more answers
Please help. I’ll mark you as brainliest if correct!
sesenic [268]

Answer:

Quantity (lbs) of type 1 candy  x = 8

Quantity (lbs) of type 2 candy  y = 17,5

Step-by-step explanation:

Let´s call  "x" quantity (in pounds) of candy type 1 in the mixture, and "y" quantity (in pounds ) of candy type 2, then according to the problem statement.

x  +  y  =  25,5

2,20*x  +  7,30*y = 5,70 * 25,5   ⇒  2,20*x  +  7,30*y = 145,35

Then we have a two equation system

x  +  y  =  25,5                                   ⇒   y = 25,5 - x

2,20*x  +  7,30*y = 145,35               ⇒ 2,20*x + 7,30* (25,5 - x ) = 145,35

2,20*x + 186,15 - 7,30*x = 145,35

5,1*x  = 40,8

x = 40,8/5,1

x = 8 lbs

And   y  =  25,5 - 8

y = 17,5 lbs

5 0
3 years ago
There are 3/20 tickets left to sell and capacity is 3000 how many tickets are available to sell
Musya8 [376]

Answer:

45

Step-by-step explanation

20x = 900

-----    -------

20       20

45

5 0
2 years ago
Other questions:
  • Phone Company A charges a monthly fee of $42.50, and $0.02 for each minute talk time. Phone company B charges a monthly fee of $
    5·1 answer
  • uniforms for a baseball team cost $600 plus $96 for caps. twelve players split the cost equally. which expression shows how much
    10·2 answers
  • May someone help me with this question
    9·1 answer
  • HELPPP
    10·1 answer
  • Geometry help!! Will give Brainliest! What are the coordinates of Point A? (photo attached)
    15·1 answer
  • A triangle has sides of length 7 cm, 4 cm, and 5 cm. How many triangles can be drawn that fit this description?
    10·2 answers
  • A section of a deck is shaped like a trapezoid. For this section, the length of one base is 35 feet, and the
    8·1 answer
  • Which of these numbers are less than 8.1 × 10-8?
    14·2 answers
  • 3x + 2y - 4y =<br><br> I need help
    12·1 answer
  • 12a^2*b^4-36a^2*b+44abc
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!