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
velikii [3]
3 years ago
6

2. Evaluate the geometric series given a = -120, r = 0.5 and n = 6

Mathematics
1 answer:
Tju [1.3M]3 years ago
8 0

Here we're discussing the "nth partial sum of a geom series."

                                                       1 - r^n

The formula for that is s(n) = a(1) --------------- 

                                                         1-r

We can subst. the given values and see where that takes us:

                  1 - (-2)^6        1 - 64

105 = a(1)*---------------- = ----------*a(1)  =  -21*a(1)

                    1-(-2)                3

                                              105

Solving this for a(1):  a(1) = --------- = -5    (answer)

                                              -21

You might be interested in
An orthocenter of a triangle is
Kamila [148]

Answer:

the intersection of the triangle's three altitudes.

Step-by-step explanation:

hope this helped </3

5 0
3 years ago
Click on the photo to see it.
Lera25 [3.4K]

B is the midpoint

\\ \sf\longmapsto AB=\dfrac{1}{2}AC

\\ \sf\longmapsto 7x-3=\dfrac{5}{2}

\\ \sf\longmapsto 5=2(7x-3)

\\ \sf\longmapsto 5=14x-6

\\ \sf\longmapsto 14x=6+5

\\ \sf\longmapsto 14x=11

\\ \sf\longmapsto x=\dfrac{11}{14}

\\ \sf\longmapsto x=7.8

6 0
3 years ago
Read 2 more answers
In which number does the 5 represent 5x 10,000?
lyudmila [28]
It would be 50,000, because 5*10,000=50,000.
6 0
3 years ago
Confused on this part
Andre45 [30]

Answer:

The first 2 and the last one

Step-by-step explanation:

You need to have an input per output, and to choose one or multiple the need to have a continuous pattern. Ex.+5 ad -2 on both sides every time would be a linear function.  

6 0
2 years ago
SAT Help
posledela
Well, their speeds are (V_1 is Jack's speed, and V_2 is Richard's.
V_1 = \frac{1}{5} houses/day \\ V_2 = \frac{1}{7} houses/day \\ V = V_1 + V_2 = \frac{1}{5}+\frac{1}{7} = \frac{7+5}{35} = \frac{12}{35}
They, together, can paint 12 houses in 35 days. To get a single house, we only have to calculate \frac{35}{12} which is very close to 3 (a bit below)
5 0
3 years ago
Read 2 more answers
Other questions:
  • Please answer this question, will give brainliest!
    12·1 answer
  • Explain you can use the whole number expression 248 divided by 4 to check that your answer to exercise 2 is reasonable
    10·1 answer
  • Which value of jjj makes (5+3)j=48(5+3)j=48left parenthesis, 5, plus, 3, right parenthesis, j, equals, 48 a true statement? Choo
    13·1 answer
  • Two cars left the city for a suburb, 120 km away, at the same time. The speed of one of the cars was 20 km/hour greater than the
    8·1 answer
  • For g(x)= 1/5x^2+3x, find g'(1)<br> a. -1/4<br> b. 1/4<br> c. -7/4<br> d. -4/7<br> e. 7/4
    6·1 answer
  • From 5 a.m. to noon, the temperature rose 15 °F to a high of 10 °F.
    5·1 answer
  • Y = x + 1<br><br>in graph form ​
    13·1 answer
  • Write 2/5 X 3/7 in simplest form​ brainliest if correct
    10·2 answers
  • Please help due today
    10·1 answer
  • A stock lost 8 1/4 points on Monday and then another 2 3/4 points on Tuesday. On Wednesday, it gained 12 points.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!