1. There are 9 blue marbles in a box. How many groups of 4 marbles are possible?
2. There are 12 boys in a class. In how many ways can they group
themselves by 6?
3. How many group of 5 red cards can be drawn from a deck of 12 red
cards?
4. In how many ways can 8 students seat in arrow of 5. chairs?
5. How many letters of the word GRACIOUS both begin and end with a
vowel?​

hope this !

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isocolese triangle

we know that the line connect a and b is the hyptonuse

so first find the hypotonuse length using the distance formula, call the length c

since it is an isocolese triangle, the lengths of the legs are the same

using pythagorean theorem,

in this case, a=b since isocolese triangle so we get

or

we can find c so we can find the distances

we know that if we draw 2 circles, each has center at a and b, and find where they intersect, we can the 2 possible locations for c

if a has center at (xa,ya) and b has center at (xb,yb), then we can solve where

and

intersect to find where they intersect

i'm not going to put an example because i have to go to class. i hope this explanation is enough

meaning of term low   inflation is when prices of commodities does not change very highly.so low inflation is   not a sign of healthy economy.the demand of goods becomes higher due to some faulty measures taken by government

there are two kind of inflation

1. positive inflation : when supply of goods is less than prices of those goods rise.

2. negative inflation : when supply of any good is very high so it,s price will fall.

so option c is true : struggling economy because it results from a steady rise in demand.