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Shtirlitz [24]
3 years ago
8

Rotate rectangle ABCD clockwise 90º about the origin. Label A' B' C' D' respectively. What are the coordinates of the new figure

?

Mathematics
1 answer:
Vitek1552 [10]3 years ago
7 0
The formula to use would be (x,y) to (y,-x). So, the points are shown, and i will not right them down because you can see them yourself, but I can show you what they will look like afterwards. A=(-2,-2), B=(-5,-2), C=(-6,-6), D=(-2,-6). You can then draw them in and see how they look like after they are rotated.
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What is the slope of (12,10),(12,5)
cestrela7 [59]
5/0 UNDEFINED... The answer is a vertical line.
5 0
3 years ago
Read 2 more answers
What are the restrictions for a? 2a^2+a-15/5a^2+16a+3
koban [17]

ANSWER


The restrictions are

a\ne -3,a\ne -\frac{1}{5}


EXPLANATION


We were given the rational function,


\frac{2a^2+a-15}{5a^2+16a+3}


The function is defined for all values of a, except



5a^2+16a+3=0


This has become a quadratic trinomial, so we need to split the middle term.


We do that by multiplying the coefficient of x^2 which is 5 by the constant term which is 3. This gives us 15.


The factors of 15 that adds up to 16 are 1 and 15.


We use these factors to split the middle term.




5a^2+15a+a+3=0


We now factor to get,


5a(a+3)+1(a+3)=0


We factor further to get,


(a+3)(5a+1)=0



This implies that,


(a+3)=0,(5a+1)=0


This gives


a=-3,a=-\frac{1}{5}


These are the restrictions.





8 0
3 years ago
Luke invited 20 more boys than girls to his birthday party. However, only ¾ of the boys and ⅔ of the girls came. Exactly 19 of L
sveta [45]

Answer:

68

Step-by-step explanation:

Let:

Number of girls invited = x

Number of boys = x +20

3/4 of boy showed up

2/3 of girls showed up

Exactly 19 did not show up

Therefore, we could say:

Fraction of boys that didn't show up = 1 - 3/4 = 1/4

Fraction of girls that didn't show up = 1 - 2/3 = 1/3

That is,

[1/4 *(x + 20)] + [1/3*x] = 19

[(x + 20) / 4] + x /3 = 19

(3(x + 20) + 4x) / 12 = 19

3x + 60 + 4x = 228

7x = 228 - 60

7x = 168

x = 168 / 7

x = 24

Number of girls, x = 24

Number of boys, x + 20 = 24 + 20 = 44

Total friends invited = (24 + 44) = 68

8 0
3 years ago
I need help QUICK!!!
Flauer [41]

Answer:

87 in³

Step-by-step explanation:

that is the solution above

8 0
2 years ago
Can you help me with this?
NNADVOKAT [17]

Volume is L x W x H. Since the three dimensions are all multiplied by each other it doesn't matter the order.

This means the answer would be D.

5 0
3 years ago
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