Answer:
3rd answer
Step-by-step explanation:
Two dice with #s 1-6
To roll a sum of 7, the 2 numbers have to add up to 7.
First die Second die
1 6
2 5
3 4
4 3
5 2
6 1
Each of those combinations adds up to 7. There are 6 of them. The total number of possibilities of rolls is 6 x 6 = 36.
Probability is favorable outcomes / total outcomes, so it's 6/36 = 1/6
43 I added and multiplied everything I’m sure
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creo que a eso te refieres!!!
hay una paguina de brainly en espanol ahi tambien te pueden ayudar
es:brainly.lat
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From the setup of the problem, the "length of the top of the bookcase, measured along the attic ceiling" will be the hypotenuse of a right triangle, the length "AB". We have both the angle between AB and AC and the length of AC (3.24 meters), so we can use trigonometric identities.
The cosine of the 40 degree angle between AB and AC is equivalent to the length of AC divided by the length of AB. Equivalently, we have:

where "h", the hypotenuse, is the length we want. Rearranging the formula to solve for h we have that

which is 4.2295... meters. Converting to centimeters (multiplying by 100) we have that h = 422.95... centimeters, or if we round the value, h = 423 centimeters.
Answer:
c
Step-by-step explanation:
x²+y²+4x+6y=0
compare with x²+y²+2gx+2fy+c=0
centre is (-g,-f)=(-2,-3)
radius=√(g²+f²-c)=√((-2)²+(-3)²-0)=√13