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
zhenek [66]
3 years ago
15

Find the sum of the first 13 terms in the series -5+1+7...+67

Mathematics
1 answer:
valentinak56 [21]3 years ago
5 0
This is an arithmetic series with common difference 6 

S13  = (13/2)[2*-5 + (13-1)*6)]  =  403
You might be interested in
Points H and F lie on circle C. Circle C is shown. Line segments E C, F C, and D C are radii. Tangents E G and D G intersect at
stira [4]

Answer:

answer on ed. is 6 units

6 0
3 years ago
Read 2 more answers
Help<br><br> Determine which equation is parallel to line jk and which is perpendicular to line jk.
alukav5142 [94]

Answer:

5x + 3y = 13 parallel.

6x - 10y = 7 perpendicular.

Step-by-step explanation:

Two lines with slopes m_1 and m_2 are parallel when m_1=m_2 and are perpendicular when m_1*m_2=-1

Now determine the slope of all the lines

The line jk passes through the points

(-5,5) and (1,-5) so its slope is

\frac{-5-5}{1-(-5)}=\frac{-10}{6}=-\frac{5}{3}

To determine the slope of the lines in the blue rectangles, isolate y from each one and the coefficient of x is the slope

5x-3y = 8 ------> y = (5/3)x + 8/3 ------> slope 5/3

Neither parallel nor perpendicular.

6x+10y = 11 ------> y = (-6/10)x + 11/10 = (-3/5)x + 11/10 ------> slope -3/5

Neither parallel nor perpendicular.

5x + 3y = 13 ------> y = (-5/3)x + 13/3 ------> slope -5/3

This line is parallel

6x - 10y = 7 ------> y = (6/10)x - 7/10 = (3/5)x -7/10 ------> slope 3/5

Since (-5/3)(3/5) = -1 this line is perpendicular.

8 0
2 years ago
why do the products of multidigit numbers with zeros &amp; one digit sometimes have zeros in them &amp; sometimes have no zeros
Bingel [31]
Im not quite triggered but U should go to mathantics.com or watch his videos to find it out :D
3 0
3 years ago
Read 2 more answers
The length of the sides of a triangle is given. Determine
Stels [109]

Answer:

The triangle is a right triangle

Step-by-step explanation:

For the triangle to be right, Pythagoras’ theorem must be obeyed

According to the theorem, the square of the longest side (the hypotenuse) equals the sum of the squares of the two other sides

Now, from the given side lengths, the highest value is 10;

squaring this, we have 10^2 = 100

Squaring and adding the other values, we have

6^2 + 8^2 = 36 + 64 = 100

This mean the values are equal and the Pythagoras’ theorem is obeyed

Hence, we can conclude that the triangle with the given side lengths is a right triangle

3 0
3 years ago
Suzanne ran 4.5 miles for the school fundraiser. She earned $2.40 per mile. How much money did she make?
pochemuha

Answer:

the answer is $10.

$2.40=1

n=4.5

= 4.5×2.40

=$10.80

7 0
3 years ago
Other questions:
  • What’s the correct answer for number 3
    6·1 answer
  • Is the ratio 4.2:1.5 proportional to the ratio 12:5
    14·1 answer
  • What is 7/45 simplified
    8·1 answer
  • Eric had 15.3 feet of fishing line. He cut off a piece and had 38.4 inches left. How long was the piece he cut off?
    12·1 answer
  • ASAP math help algebra plzzz
    9·1 answer
  • A family has 4 children: Ariel, Bob, Chris, and Diana. Assuming that all birth orders are equally likely.
    6·2 answers
  • Explain how to change a negative exponent to a positive one
    12·2 answers
  • What is the linear equation does this graph represent?​
    8·1 answer
  • Which ordered pair uses the rule used in the table?
    10·2 answers
  • What is the total cost of order number four (12.95) if the customer received 10% off and paid a 15% gratuity and 4.5% sales tax?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!