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defon
3 years ago
8

What is the area of the composite figure?

Mathematics
1 answer:
kaheart [24]3 years ago
3 0
A composite has more than 2 ways to divide itself
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What is the sum of the first five terms of a geometric series with a1=6 and r=1/3?
Anuta_ua [19.1K]
The sum of a geometric sequence is:

s(n)=a(1-r^n)/(1-r), s(n)=nth sum, a=initial value, r=common ratio, n=term #

In this case we are told that a=6 and r=1/3 so:

s(n)=6(1-(1/3)^n)/(1-1/3)

s(n)=6(1-(1/3)^n)/(2/3)

s(n)=9(1-(1/3)^n), so the sum of the first 5 term is:

s(5)=9(1-(1/3)^5))

s(5)=9(1-(1/243))

s(5)=9(242/243)

s(5)=2178/243

s(5)=242/27

s(5)=8 26/27  ...if you wanted an approximation s(5)≈8.96 to the nearest hundredth...
3 0
2 years ago
(-6x-2) - (-3x+5)= -24x+14<br><br> Could someone show me the work for this
lesya692 [45]
(-6x-2)-(-3x+5)= -24x+14
-6x-2+3x-5=-24x+14
-3x-7=24x+14
—       —
-3x      -3x

6 0
3 years ago
If a circle has a radius of 33 inches, how many inches is it’s diameter
Igoryamba

Answer:

it is sixty six inches

Step-by-step explanation:

double the radius

8 0
3 years ago
Read 2 more answers
It takes a student 11 seconds to scan their hand at lunch. During one 30 min lunch period, approximately how many students can b
julia-pushkina [17]

It takes 11 seconds to scan one person. So we have this ratio to start with

11 seconds: 1 person

Divide both sides by 11 to get this new ratio

1 second: 1/11 person

1 second: 0.0909 person

So in 1 second, 0.0909 of a person can be scanned. This statement seems silly because we can't have a fraction of a person, but it helps with the next part as shown below. The next step is to multiply both sides by 1800 to get....

1 second: 0.0909 person

1800*1 second: 1800*0.0909 person

1800 seconds: 163.62 persons

In a span of 1800 seconds (equivalent to 30 minutes), about 163 people's lunches can be scanned. Unfortunately, none of the answer choices are 163. The closest thing is 180, but that is an overestimate. So I would ask your teacher if there is a typo somewhere.

Note: if it took exactly 10 seconds for each student (instead of 11), then the answer would be 1800*(1/10) = 1800*0.10 = 180.

4 0
3 years ago
Find the area of the polygon.
Oliga [24]

Answer:

Step-by-step explanation:

A = (7 + 4)(24) ÷ 2 = 132 units²

3 0
3 years ago
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