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
Tanya [424]
3 years ago
9

PLEASE HELP ASAP!!

Mathematics
1 answer:
BabaBlast [244]3 years ago
4 0

Answer:

The first term of the sequence is -120.

Step-by-step explanation:

The formula for the "nth" term of a geometric sequence is shown below:

an = a0*r^(n-1)

Where an is the nth term, r is the ratio and n is the position of the term on the sequence. For this problem we want to find what is the initial term, a0, so we will isolate it in the formula as shown below:

a0*r^(n-1) = an

a0 = an/[r^(n-1)]

We then apply the data given to us

a0 = 31.45728/[-0.8^(7-1)]

a0 = 31.45728/[-0.8^6] =31.45728 /-0.262144= -120

The first term of the sequence is -120.

You might be interested in
The two square pyramids are similar. The side length of the smaller pyramid is 3/4 the side length of the larger pyramid.Which f
vichka [17]
The answer is <span>A.9/16.

The ratio of areas of two similar squares is the square of the ratios of their similar side lengths. Since </span><span>the ratio of the smaller side length to the larger side length is 3/4, the ratio of areas of two similar squares is:
(3/4)</span>² = 3²/4² = 9/16.
7 0
3 years ago
Read 2 more answers
1.Solve for w.
iren [92.7K]
Hi there,

1) 
6 + (w - 10) = 5
6 + w - 10 = 5
- 4 + w = 5
w = 5 + 4

Hence, W = 9

2)
2/3 + y - 1/9 = 7/9
5/9 + y = 7/9
y= 7/9 - 5/9

Hence, Y = 2/9

4)
4x - 3/2x - 15/4 = 3/8
32x - 12x - 30 = 3
20x - 30 = 3
20x = 3 + 30
20x = 33

Hence, the answer is 33/20

5)
0.7(3s + 4) - 1.1s = 7.9
2.1s + 2.8 - 1.1 = 7.9
s + 2.8 = 7.9
s = 7.9 - 2.8

Hence, the answer is 5.1

Hope this all helps :)
8 0
3 years ago
Read 2 more answers
Mr. Zero bought a number of gold pieces for $60. He kept 15 of them and sold the rest for $54. He made a profit of $0.10 on each
Reil [10]

Answer:

c

Step-by-step explanation:

3 0
3 years ago
HELP ASAP PLSS!<br><br><br> f(x) = 12x + 5<br><br> find f(11)<br><br><br> f(11) =
loris [4]

F(11) means to replace x in the equation with 11

12(11) + 5

12 x 11 = 132

Now you have 132 + 5 = 137

F(11) = 137

5 0
3 years ago
Question 28 of
Helen [10]

y - y1 = m(x - x1) \\ y - 8 = 15(x - 2) \\ y - 8 = 15x - 30 \\ y = 15x - 30 + 8 \\ y = 15x - 22

The equation of line is y = mx+b ; m is slope , b is y- intercept

Please give brainlest

7 0
2 years ago
Other questions:
  • the 6 grade made 450 dollers the 5 grade made 76.5 how much more can the 6 th grade made than the 6 th grade
    10·2 answers
  • Volume of triangle prism 25 *** very easy
    14·2 answers
  • Juliette is making a fruit salad. She purchased 92/3 ounces each of 6 different fruits. How many ounces of fruit did she purchas
    5·2 answers
  • Theresa is considering a 7/23 balloon mortgage with an interest rate of 4.5%
    7·1 answer
  • Write an equation of the line with a slope of 2/3 and y-intercept of -8.
    10·1 answer
  • Given u = −5i + 2j, v = −6i + 4j, find −2u + 2v
    14·1 answer
  • Kendrea is 4 times 2 less than Cameron's age. Kendrea is 40 years old. How
    11·1 answer
  • Whoever gets it right can have brainliest, but answer ASAP!
    9·2 answers
  • HELPPPPPPP!!!!!!!!!!!!!
    13·1 answer
  • Add: -8x8+ (-3x8 + 3)
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!