An object is dropped from a small plane. As the object falls, its distance, d, above the ground after t seconds, is given by the
formula d = -16t^2+ 1,000. Which inequality can be used to find the interval of time taken by the object to reach the height greater
than 300 feet above the ground?

Which?  There are no choices.

d = -16t²+ 1000

We want a height greater than 300, that's

d > 300

-16t²+ 1000 > 300

Since we don't have the list I'll continue to solve, generating equivalent inequalities along the way.

-16t²+ 1000 > 300

-16t² > -700

16t² < 700

t² < 700/16

Assuming t ≥ 0,

t < (5/2)√7

560

step-by-step explanation:

giggidy

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.