A scientist was in a submarine below sea level studying ocean life over the next 10 minutes she went down 58 ft how many feet had she been below sea level if she was 141.5 ft below sea level after she went down

199.5 ft

Step-by-step explanation:

Given: A scientist was in a submarine below sea level studying ocean life over the next 10 minutes she went down 58 ft.

If she was 141.5 ft below sea level after she went down , then she had been (141.5 ft + 58 ft) = 199.5 ft below sea level.

Hence, If she was 141.5 ft below sea level after she went down , then she had been 199.5 ft below sea level.

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15