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2 years ago

Enter the number that belongs in the green box cd=

Mathematics

2 answers:

kondaur [170]2 years ago

8 0

Answer:

Step-by-step explanation:

I think 9 since there’s a right angle, so there’s an assumed right angle on the other side of the line. 9 is the hypotenuse when AB is 3 so I think CD would also be 9 since BC is 3 as well.

qwelly [4]2 years ago

4 0

57 because it is right n mark ne brain list please

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Solve the quadratic equation 3x²+2x-4=0

steposvetlana [31]

Answer:

Step-by-step explanation:

Hello,

$\Delta = 2^2-4*3*(-4)= 4+48=52$

so the two solutions are

$\dfrac{-2+2\sqrt{13}}{2*3}=\dfrac{\sqrt{13}-1}{3}=0.87\\\\\dfrac{-2-2\sqrt{13}}{2*3}=-\dfrac{\sqrt{13}+1}{3}=-1.54\\\\$

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2 years ago

Awarding more points!!!!

dezoksy [38]

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2 years ago

Hellp! me thanks alot explain if u can

Musya8 [376]

Answer:

15 sides

Step-by-step explanation:

360/24 =15

Hope this helps!

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2 years ago

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What type of number is -12.123 repeating?

AleksAgata [21]

Answer:

Step-by-step explanation:

A: a whole number is a positive number (not including 0) that does not have anything after the decimal.

B: an integer is 0, all the + and all the minus numbers that have nothing after the decimal.

D: an irrational number has an unending decimal like pi.

C: has a terminating decimal and is minus. It is C, rational.

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3 years ago

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liang enlarged a photograph to 1 3/4 times its original size the original photograph was 5 inches wide what was the width of the

valentina_108 [34]

Original Size = 5 inches

After enlargement :

$1 \dfrac{3}{4} \times 5$

$= \dfrac{7}{4} \times \dfrac{5}{1}$

$= \dfrac{35}{4}$

$= 8\dfrac{3}{4} \text { inches}$

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3 years ago