I need help answering these, ill give brainliest to the right answers the question on number two is
"determine if the triangles are right triangles"
and the question on number four and six is
"find the missing side. round the answer to the nearest tenth. ( 1 decimal place )"​

answer: 2/4

step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204