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natima [27]
3 years ago
11

In a classroom, the probability that the teacher will chose a boy from 20 students is 0.45. How many students are not boys?

Mathematics
1 answer:
padilas [110]3 years ago
5 0
The answer is 9 boys!! hope this helps 

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How to solve 8/x^2-1=6/x+1
NARA [144]
You first need to cross multiply to get 8x+8=6x^2-6. Then make the function into 6x^2-8x-14=0 which can be simplified into 3x^2-4x-7=0 by dividing the equation by 2. Then you must split the middle(-4x) to get 3x^2+3x-7x-7=0. This simplifies to 3x(x+1)-7(x+1)=0 and then to (3x-7)(x+1)=0. From here you just solve for each root which you will find are x= -1 and 7/3
8 0
3 years ago
I'm not sure what AAS,SAS,SSS,ASA mean .how do I solve this?​
notka56 [123]

Answer:

AAS is an acronym for Angle-Angle-Side. It basically means that if two angles and a nonincluded side of one triangle are congruent to two  angles and the corresponding nonincluded side of a second triangle, then  the two triangles are congruent. SAS is an acronym for Side-Angle-Side. It means that if two sides and the included angle of one triangle are congruent to two  sides and the included angle of a second triangle, then the two triangles  are congruent. SSS is an acronym for Side-Side-Side. It means that if three sides of one triangle are congruent to three sides of a second  triangle, then the two triangles are congruent. ASA is an acronym for Angle-Side-Angle. It means that if two angles and the included side of one triangle are congruent to two  angles and the included side of a second triangle, then the two triangles  are congruent.

In the problem, we know that the corresponding sides of both triangles are congruent to each other, so those would be given. The third side of each triangle would also be congruent because of reflexive property. Reflexive property means that the two triangles share a line segment. So, the answer would be SSS.

8 0
3 years ago
Help!!!!!!!!!!!! !!!!!!!!!!!!
yulyashka [42]
The correct answer is y=2/3x+4 which is the last option :)
6 0
3 years ago
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Answer:

y=1/2x-2

Step-by-step explanation:

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solmaris [256]
0.4x 0.4x 0.4 = (0.4)^3

Exponential form = (0.4)^3
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3 years ago
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