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
Mrrafil [7]
3 years ago
8

Find S21 for the following arithmetic series: a1 = -2 and d = 8

Mathematics
1 answer:
Oxana [17]3 years ago
8 0
You can use this formula

You might be interested in
How do I use substitution to solve
nekit [7.7K]
<span>The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.</span>
4 0
3 years ago
Read 2 more answers
The area of Gateway National Recreation is about twenty-six thousand, six hundred and sixty-three hundredths. Which shows this n
Delicious77 [7]

Answer:

B. 26,606.63

Step-by-step explanation:

The area of Gateway National Recreation Area is about twenty-six thousand, six hundred six and sixty-three hundredths. Which shows this number in standard form? A. 26,606.3 B. 26,606.63

C. 26,660.63 D. 26,666.3

Solution

Break down and writing in numerals of twenty-six thousand, six hundred six and sixty-three hundredths.

Twenty six thousand = 26,000

Six hundred six = 606

Sixty - three hundredth = 0.63

Adding

26,000 + 606 + 0.63

We have

26,606.63

The correct answer is B

5 0
3 years ago
What is the slope and y-intercept for <br> -6x + 4y = -12
Anestetic [448]
Slope: 3/2
Y-Intercept: -3
6 0
3 years ago
(x-6)² + (x + 5)² = 16
Phoenix [80]

Answer:

answer A   : (2 -5)

Step-by-step explanation:

the midipoint P,Q is the center A of this circle (because PQ is a diameter)

use : (x-6)²+(x+5)² = 16 you have : A(6 , -5) now  let Q(x,y) :

 (x+10)/2 = 6

    (y-5)/2 = - 5                          

x+10 = 12

y-5 = -10

so : x = 2 and y = - 5....answer A   : (2 -5)

6 0
3 years ago
(geometry) This zigzag crystal vase has a height of 12 inches. The cross sections parallel to the base are always rectangles tha
enot [183]

Answer:

A. 9

B. 7

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Solve 5.3×0.5 and show work
    8·1 answer
  • Each cone of the hourglass has a height of 12 millimeters. The total height of the sand within the top portion of the hourglass
    12·1 answer
  • 35 is less than the difference of 21 and a number
    8·1 answer
  • Find the 18th term of the sequence 5, 8, 11, 14, 17... 53 56 59
    12·1 answer
  • Mean mode median range please help me
    5·1 answer
  • One year, in school A, 162 students leave and 109 go to university. In school B, 75 students leave and 68 go to university. Comp
    9·2 answers
  • Find the distence between each pair points (-4,-1) (-3,3)​
    15·2 answers
  • Jill invest $400 in a savings bond. The value of the bond V(x) in hundreds of dollars after x years is illustrated in the table
    11·1 answer
  • The driving distance from Los Angeles to a Chicago is 2,054 mi. The distance from Chicago to Boston is 983 mi. About how many mi
    6·1 answer
  • Bianca vrea sa facă fundițe din panglici.Ea are 4 panglici de câte 5 metri.Pentru o fundița,ii trebuie un metru de panglica.Cate
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!