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
mariarad [96]
3 years ago
15

What is the some need help????​

Mathematics
1 answer:
snow_tiger [21]3 years ago
5 0

The sum formula for a geometric sequaence is:

sum(n) = a1(1-r^n)/1-r

Where n is the number of terms, a1 is the first term and r is the common ratio:

s(8) = 3(1-1/2^8) / (1-1/2)

s(8) = 3(1-1/256) / 1/2

s(8) = 2 253/256 / 1/2

s(8) = 765/128

The answer is C.

You might be interested in
What 2/9rounded to the nearest whole number
Arte-miy333 [17]
The answer is 3 because if you were to round 2.9 the next whole up from that is 3
4 0
3 years ago
An exterior angle of a triangle equals _______ minus the adjacent interior angle.
insens350 [35]
As isosceles triangle has two congruent sides with a third side 
<span>that is the base. </span>

<span>A base angle of an isosceles triangle is one of the angles formed by </span>
<span>the base and another side. Base angles are equal because of the </span>
<span>definition of an isosceles triangle. </span>

<span>A picture would probably help here: </span>


<span>A </span>
<span>. </span>
<span>/ \ ABC = ACB = 39 degrees </span>
<span>/ BAC = ??</span>

<span>._______________. </span>
<span>B C </span>
<span>base </span>
<span>ABC is the isosceles triangle. AB is congruent to AC. Angle ABC </span>
<span>is congruent to angle ACB. These are the base angles. </span>
<span>Triangle is a convex polygon with three segments joining three non-collinear points. Each of the three segments is called a side, and each of the three non-collinear points is called a vertex. </span>
<span>Triangles can be categorized by the number of congruent sides they have. For instance, a triangle with no congruent sides is a scalene triangle; a triangle with two congruent sides is an isosceles triangle; a triangle with three congruent sides is an equilateral triangle. </span>
<span>Triangles can also be categorized by their angles. For instance, a triangle with three acute interior angles is an acute triangle; a triangle with one obtuse interior angle is an obtuse triangle; a triangle with one right interior angle is a right triangle; a triangle with three congruent interior angles is an equiangular triangle. </span>
<span>One property of a triangle is that the sum of the measures of the three interior angles is always 180 degrees (or pi radians). In addition, the exterior angle of a triangle is the supplement of the adjacent interior angle. The measure of the exterior angle is also the sum of the measures of the two remote interior angles.</span>
5 0
3 years ago
Read 2 more answers
Which of the following shows the correct order for -1 2/5, (-1)2, -1.4 and (1/2)2?
Pavlova-9 [17]
What is it supposed to go from

5 0
3 years ago
Find the slope of the line that goes through the two points.<br> (6,7) (-2,11)
Alla [95]

Answer:

-1/2

Step-by-step explanation:

The equation for slope is (y2-y1)/(x2-x1).

Plug in the values given in the problem

(11-7)/((-2)-6)

Then simplify

4/(-8)=-1/2

3 0
2 years ago
4(x-1) + (x+2) + 3(x+1)
dusya [7]

Answer:

8x+1

Step-by-step explanation:

4(x-1) + (x+2) + 3(x+1)

4x-4 + x+2 + 3x+3

combine all x

4x+x+3x= 8x

combine all numbers without variables

(-4) + 2+3=1

8x+1

8 0
3 years ago
Other questions:
  • Evaluate 5m for m = 3
    7·2 answers
  • A book sold 39,400 copies in its first month of release. suppose this represents 8.9% of the number of copies sold to date. how
    14·1 answer
  • A regular polygon with an interior angle sum of 9000°? If so, what is it?
    5·1 answer
  • Can someone help me with this please?
    12·1 answer
  • Comparing decimals 0.49 to 0.94 is that equal ? or 0.94 more..?​
    13·1 answer
  • place parentheses in the equation below so that you solve by finding the difference between 28 and 3 Write the answer 4×7-3=
    14·1 answer
  • Hi I need help with this question please thank you
    12·1 answer
  • The complement of an angle is 59°. What is the measure of the angle?
    6·1 answer
  • Ravon, when you submit this form, the owner will be able to see your name and
    13·1 answer
  • Find the rate of change of the linear function shown in the graph. Then find the initial value.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!