Hello!
this problem comes with a slightly complex math equation that I had to ask my math teacher about, so I hope it helps.
<span>The expression n! means "the product of the integers from 1 to n"
</span>this can be said for any variable
say n is the total and r is the 2-letter combo
C(n,r<span>)=13!/</span>(2!(13−2)!)
If you use this equation, you will get a final answer of: 78
I hope this helps, and have a nice day.
Answer:
The classification of the set of circumstances is presented in the following subsections of the understanding.
Step-by-step explanation:
A 7-year health research project revealed that individuals for whom the mom took DES throughout pregnancy seem to have been twice as probable as women for whom the mothers didn't use the medication to establish tissue irregularities that could cause cancer.
(a)
Women with whom the mothers have taken DES throughout pregnancy as well as women where its mothers haven't taken DES during pregnancy.
(b)
The information collected seems to have been a sample or survey.
(c)
A sampling unit of 3980 (women) showed that performance 63 industrialized tissue irregularities that could contribute to disease (cancer) in the proportion of females with whom the mom brought the powerful DES all through pregnancy.
The proportion of abnormalities in tissues established by females does seem to be:
= 
= 
Of every thousand women, 15.8 established tissue abnormalities.
This is the correct answers
Answer:
1. this is the definition of a midpoint - bc the definition of a midpoint is: “If a point is a midpoint of a segment, then it divides that segment into two congruent parts” or “If a point divides a segment into two congruent parts, then it's the midpoint of that segment.”
2. this is the division property of equality -"The division property of equality states that when we divide both sides of an equation by the same non-zero number, the two sides remain equal". so, in this situation we want to isolate x which means dividing both sides by 20. This will keep both sides equal just more simplified ( before, it was 20 and 100, after dividing both sides by 20 it is 1 and 5 which is the same ratio therefore they are still equal)
3. this one's the subtraction property of equality- this property means you can subtract the same number from both sides of an equation and get an equivalent equation. in this situation, they subtracted 15 from both sides to get AB = 30 and it ends being still being equal to AB + 15= 45.
4. this is the symmetric property of equality - "This property states that if a = b, then b = a. That is, we can interchange the sides of an equation, and the equation is still a true statement." "it states that values are still equal no matter which side of the equal sign they're on." That's why its possible for XY=ST and ST=XY
5. this is definition of congruence - which basically states that if a value of one thing is equal to the value of another thing those two things can be called congruent.
6. this is substitution property- this is the property that allows you to substitute one value for another in an equation. the property states that if
x = y, then x can be substituted in for y in any equation, and y can be substituted for x in any equation, just like what they show here with 5AB substituting for CD in the equation.
i hope this helped! im not that good at explaining so if u have more questions lmk!
Its D. because 6 = 600 so 2 tens + 600 = 620 so 15 plus all of the above is 645 :D hope this helped
