the estimated population of the world was 1.6 billion in 1900 and 4.0 billion in 1975 what is the percent of increase

| 7x28 = (748) + ( 7 *__) =

masya89 [10]

Answer:

-23

Step-by-step explanation:

i dont know

3 0

3 years ago

A wildlife photographer photographs a crocodile and then paddles against a river current for 6 km. Then, hoping to photograph a

Angelina_Jolie [31]

Answer:

5 or 6

Step-by-step explanation:

So I did it in a different way than shown in rsm classes. I said that the speed was x-2 and x.

then I said the distance was 6 and 15. If the time taken was 1 hour more, then we can come up with this equation:

Since the time is 6/x-2 or 15/x

15/x-6/x-2=1

multiply everything to get a common denominator then cancel it out to get

(15x-30)-6x=x^2-2x

11x-30=x^2

x^2-11x+30=0

(x-5)(x-6) is factored form.

so x=5 or x=6. this means that the speed of the boat is either 5km/h or 6 km/h

6 0

2 years ago

19−6(−k+4) Simplify to create an equivalent expression

almond37 [142]

$\text{Hey there!}\\\\\\\text{In order for you to solve this equation you need to distribute}\\\text{-6(-k) = 6k \& -6(4) = -24}\\\\\text{New equation: 19 + 6k + (-24)}\\\\\text{Combine your like terms (if there is any)}\\\text{(6k(19+(-24)))}\\\text{Your like terms are: 19 + (-24) = -5}$

$\text{Your new equation is: 6k + (-5)}\\\\\text{+ \& - = -}\text{\underline{ (positive \& negative equals negative)}}\\\\\text{The number in the center will be a negative}\\\\\boxed{\boxed{\text{Answer: 6k - 5}}}\checkmark\\\\\\\\\\\text{Good luck on your assignment and enjoy your day!}\\\\\frak{LoveYourselfFirst:)}$