Answer:
8
Step-by-step explanation:
8multiple by 8 is 64. to find an answer we will do the 8×8=64
The sum of the infinite geometric series is -288.
<h2>Given that</h2>
A finite geometric series with n = 4, a₁ = -144, and r = ½.
<h3>We have to determine</h3>
What is the sum of the infinite geometric series?
<h3>According to the question</h3>
The sum of the infinite is determined by the following formula;

A finite geometric series with n = 4, a₁ = -144, and r = ½.
Substitute all the values in the formula;

Therefore,
The sum of the infinite geometric series is,

Hence, the sum of the infinite geometric series is -288.
To know more about Geometric Series click the link given below.
brainly.com/question/16037289
A because 16x9=144 and 4x6=24 and 144-24=120
Answer:
2520cm²
Step-by-step explanation:
Surface area = sum of the area of all the bases.
Area of bottom base = 28 * 30 = 840
Area of right base = 25 * 30 = 750
Area of left base = 17 * 30 = 510
Area of two triangles = ( 15 * 28 ) / 2 = 210 * 2 = 420
Then add all the areas together to find surface area
Surface area = 840 + 750 + 510 + 420 = 2520cm²
Relevant Formulas:
Area of a rectangle = length * width. This formula was used to find the area of the bottom base, the right base and the left base
Area of a triangle = ( height * base length ) / 2 . This formula was used to find the area of the sides which are triangles.
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Step-by-step explanation:
Look at the photo below for the answer.
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