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3 years ago

What is the image of the point (-5,-4) after a rotation of 180° counterclockwise about the origin?

Mathematics

1 answer:

Novosadov [1.4K]3 years ago

5 0

(0, -5)
Don’t mind the words here I just need to write this to have 20 characters

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Which statements are true? (look at picture)

Makovka662 [10]

Answer:

D is true, E is true, F is true

Step-by-step explanation:

Hello,

n is an odd number it means that n = 2a+1 where a is integer

$n^2-1=(2a+1)^2-1=4a^2+4a+1-1=4a(a+1)$

this is not an odd number

$n(n-1)=(2a+1)2a$

this is not an odd number

$(n-1)^2=(2a+1-1)^2=4a^2$

this is not an odd number

$n^2+2=(2a+1)^2+2=4a^2+4a+1+2=4a^2+4a+3= 2(2a^2+2a+1)+1$

so this is an odd number

$n(n-2)=(2a+1)(2a-1)=4a^2-1=4a^2-2+1=2(2a^2-1)+1$

so this is an odd number

$(n-2)^2=(2a+1-2)^2=(2a-1)^2=4a^2-4a+1 = 2(2a^2-2a)+1$

this is an odd number

hope this helps

7 0

3 years ago

A jewelry store is having a 50% off sale for all necklaces. During this sale, what is the cost of a necklace that regulary costs

Ymorist [56]

50% off means half price, so half of 49.98 is 24.99
the necklace now costs 24.99 dollars

3 0

2 years ago

Please help solving the attached image!

Triss [41]

Answer:

6,780.00 is right answer try it

7 0

2 years ago

The numbers of points scored in each basketball game are 49, 36, 61, 64, 39, 41, 43, and 39.

valentina_108 [34]

Answer:

In 25% of the games at least 55 points were scored.

Step-by-step explanation:

Percentage:

Number of desired outcomes multiplied by 100 and divided by the number of total outcomes.

In this question:

8 total games

In 2 at least 55 were scores.

100*2/8 = 100/4 = 25%

In 25% of the games at least 55 points were scored.

5 0

3 years ago

CAN SOMEONE PLEASE HELP

morpeh [17]

Answer:

Step-by-step explanation:

5 0

2 years ago