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
Temka [501]
3 years ago
8

The common ratio of a geometric series is 1/4 and the sum of the first 4 terms is 170

Mathematics
2 answers:
nata0808 [166]3 years ago
8 0

Answer:

128

Step-by-step explanation:

As common ratio is 1/4 ; let the first four terms of the geometric series be :

x , 1 / 4 .x , (1 / 4)2 .x , (1 / 4)3 .x  or

x , x / 4 , x / 16 and  x / 64

Now there sum is  170 , hence

x + x / 4 + x / 16 +  x / 64 = 170 or

(64a + 16a + 4a + a ) / 64  = 170 or

85a / 64 = 170

a = 128

Hence first first term of the series is

128

Hitman42 [59]3 years ago
4 0

Answer:

The first term is 128

Step-by-step explanation:please see attachment for explanation

You might be interested in
Round 254 212 610 to the nearest million
mafiozo [28]

Answer:

254,000,00

I hope this helps

6 0
2 years ago
Can someone please solve them?
lina2011 [118]

Answer:

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Two planes leave airport at the same time, one traveling south and one traveling west. If three hours later they are 500 miles a
Snezhnost [94]
It traveled 300 miles
4 0
3 years ago
What is the remainder when the polynomial f(x)=3x^3-4x^2+2x+8 is divided by (x-5)
allsm [11]

Answer:

remainder = 290

Step-by-step explanation:

\frac{3x^3-4x^2+2x+8}{x-5}

= 3x² + 11x + 57 + \frac{290}{x-5}

quotient = 3x² + 11x + 57 and remainder = 290


6 0
3 years ago
brett shaded4/8 of a sheet of notebook paper.Aisha says he shaded 1/2 of the paper. Are the two fractions equivalent?
tankabanditka [31]
Yes, the two fractions are equivalent because you can find a greatest common factor in both the numbers.  In this case, the GCF is 4 because it goes into both 4 and 8.  Then, you divide each part of the fraction by 4.  Then, you get the answer 1/2.  Therefore, the fractions are equivalent.
4 0
2 years ago
Read 2 more answers
Other questions:
  • Which table shows a proportional relationship between x and y?
    10·1 answer
  • Solve for y: 4y-3=5y-8
    5·2 answers
  • 62.4 is 48% of what number ?
    7·2 answers
  • 3^2 ÷ 3^-1 explain the steps
    14·1 answer
  • Simplest form 2/5ths
    6·2 answers
  • Monica has $340 in the bank and plans to save $10 per week. is this linear or exponential?
    12·1 answer
  • Find the perimeter. Simplify your answer.
    8·1 answer
  • Andre rode his bike at a constant speed. He rode 1 mile in 5 minutes.
    8·2 answers
  • Consider the function f(x)= x² - 4
    11·1 answer
  • Please answer this question friends I can't understand ?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!