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2 years ago

Which letter in the word HAPPY has an order 2 rotational symmetry?

Mathematics

2 answers:

Rus_ich [418]2 years ago

8 0

Answer:a

Step-by-step explanation:

vovikov84 [41]2 years ago

4 0

Answer:

Step-by-step explanation:

Here only letter H maps onto itself 2 times in a rotation of 360°i.e.one at angle 180° and one at angle 360°.

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Calculate the sum of the infinite series

Rina8888 [55]

Answer:

$S_\infty=250$ .

Step-by-step explanation:

The given infinite series is $50+40+32+\frac{128}{5}+...$ .

The first term of this series is $a_1=50$ .

The common ratio is $r=\frac{40}{50}$ .

$\Rightarrow r=\frac{4}{5}$ .

The sum of this infinite series is given by the formula,

$S_\infty=\frac{a_1}{1-r}$

We now substitute all the above values in to this formula obtain,

$S_\infty=\frac{50}{1-\frac{4}{5}}$

This implies that,

$S_\infty=\frac{50}{\frac{1}{5}}$

This simplifies to,

$S_\infty=50\times 5$

$S_\infty=250$ .

The correct answer is C.

4 0

3 years ago

What is the standard form of this power of ten?

trapecia [35]

10099 is this right i think it would be

8 0

2 years ago

(12+34)×2.3= (talk to me please please please)

serg [7]

Answer:

90.2

Step-by-step explanation:

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5 0

2 years ago

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You run a 100-yd dash in 9.8 seconds. how long would it take you to run a 100-m dash if you run at this same speed?

Ganezh [65]

12 seconds i believe<span />

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2 years ago

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OLEGan [10]

Answer:

3214325435435345353534

Step-by-step explanation:

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2 years ago