4 years ago

Which figure has reflection symmetry?

Mathematics

2 answers:

Debora [2.8K]4 years ago

6 0

The Correct Answer is the Arrow i have proof

Crank4 years ago

5 0

The arrow because if you cut it in have it is simmetrical

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If the total amount of people serving as of January is estimated to be 1,400,000 people, how many are in the Air Force?

d1i1m1o1n [39]

Answer:

<em>There are 364,000 people in the Air Force.</em>

Step-by-step explanation:

<u>Percentages</u>

The N% of a number M is calculated by:

$\displaystyle \frac{N*M}{100}$

For example, 15% of 280 is

$\displaystyle \frac{15*280}{100}=42$

We know the total amount of people serving as of January is estimated to be 1,400,000 people and that 26% of them are serving in the Air Force.

Compute 26% of 1,400,000:

$\displaystyle \frac{26*1,400,000}{100}=364,000$

There are 364,000 people in the Air Force.

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3 years ago

How many terms are there in a geometric series if the first term is 3, the common ratio is 4 and the sum of the series is 1,023

Olenka [21]

The sum of a geometric sequence is:

s(n)=a(1-r^n)/(1-r) in our case:

s(n)=3(1-4^n)/(1-4)

s(n)=-(1-4^n)

s(n)=(4^n)-1 and s=1023

(4^n)-1=1023

4^n=1024

n ln4=ln1024

n=(ln1024)/(ln4)

n=5

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You have one hundred seventy cubes

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