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solmaris [256]
4 years ago
6

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

Mathematics
2 answers:
Rus_ich [418]4 years ago
8 0

Answer:a

Step-by-step explanation:

vovikov84 [41]4 years ago
4 0

Answer:

H

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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How to solve 2X^2+Y^2 = X^2-Y^2
arlik [135]
   
2x^2+y^2 = x^2-y^2\\\\
2x^2 - x^2 + y^2 + y^2 = 0\\\\
x^2 + 2y^2=0\\\\
x^2 = 0~~~\Longrightarrow~~~\boxed{x=0}\\\\
2y^2 = 0~~~\Longrightarrow~~~y^2 = 0~~~\Longrightarrow~~~\boxed{y=0}\\\\





5 0
4 years ago
What is the density of the oak board, it's 5.5 inches wide, 1.5 inches thick , 3 feet long and weighs 8.05 lbs? Please show work
laiz [17]

Answer:

37 - 56 lb / ft3

0.6 - 0.9 103 kg / m3

Step-by-step explanation:

The density or hardness of wood varies by species, and the value is necessary to approximate the weight of lumber by volume. In this table, the density of different species of wood is expressed as weight in pounds per cubic foot and kilograms per cubic meter. The density will vary based on the moisture content of the wood.

8 0
3 years ago
Eric has 4 pieces of clay he cut out each piece of clay into thirds how many 1/3 size pieces of clay does Eric have
Ivahew [28]

Answer:

ERIC HAD 12 PIECES OF CLAY LEFT

Step-by-step explanation:

1/3 + 4 = 12

4 0
4 years ago
8 divided by 2 (2+2). 1 or 16
laiz [17]

Answer:

16

Step-by-step explanation:

8/2(2+2)  

Following the order of operations (PEMDAS), combine the terms in your parentheses:

8/2(4)

Remember that we follow the order of operations from left to right.

Divide 8 into 2:

4(4)

Multiply:

16

8 0
3 years ago
POSSIBLE POINTS: 10
Nadusha1986 [10]

Answer:

5 + 3t

Step-by-step explanation:

t = amount Tanya has

Lucy = $5 more than 3x of what Tanya has

5 0
3 years ago
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