At a school,147 students play at least one sport. This is 70% of the students at the school. How many students are at the School?There are ? students at the school.

Answers

Answer 1

Answer: First I would divide 147 by 7 to get 10 percent of the students in the school. The answer is 21. To get from 10 percent to 100 percent, I would multiply it by 10. 21x10= 210. Therefore , there are 210 students in the school.

Answer 2

Answer:

Answer: 210

Step-by-step explanation:

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Simplify and explain your answer 4/7+2/5(1/5+1/10)

Answers

$(4)/(7)+(2)/(5)\cdot((1)/(5)+(1)/(10))=(4)/(7)+(2)/(5)\cdot((2)/(10)+(1)/(10))=(4)/(7)+(2)/(5)\cdot(3)/(10)=(4)/(7)+(1)/(5)\cdot(3)/(5)\n\n=(4)/(7)+(6)/(25)=(4\cdot25)/(7\cdot25)+(6\cdot7)/(25\cdot7)=(100)/(175)+(42)/(175)=(142)/(175)$

Someone help me on this

Answers

remember you can do antying to an equaitn as long as you do it to both sides
treat as equaiton, but flip sign when dividng or muliplying by negaitve

isolate x
first distribute
7+3x<8(3+x)
7+3x<24+8x
minus 3x both sides
7<24+5x
minus 24 both sides
-17<5x
divide both sides by 5
-17/5<x

How old am i if 200 reduced by 2 times my age is 16

Answers

$x-your\ age\n\n200-2x=16\ \ \ \ \ |subtract\ 200\ from\ both\ sides\n-2x=-184\ \ \ \ \ \ |divide\ both\ sides\ by\ (-2)\n\boxed{x=97}\leftarrow answer$

Nine tokens are black on one side and white on the other. Initially, four tokens have the black side up (see the picture). In each turn you have to flip three tokens. What is the least number of turns you need to have all tokens showing the same color?