Idont understand how to do this its factoring quadratics

olume = length * height * width  

Therefore 280 = 4 * (n + 2) * (n + 5)  

Divide both sides of the equation by 4  

70 = (n + 2)(n +5)  

Expand  

70 = n^2 + 5n + 2n + 10  

Subtract 70 from both sides and simplify  

0 = n^2 + 7n -60  

Factor  

(n +12)(n -5) = 0  

Therefore n = -12 or + 5  

As n cannot be less than -2 as you cannot have a negative dimension, it means that n = 5 and the sides are 4, (5 + 2), (5 + 5) = 4, 7 and 10 inches respectively  

Volume is therefore  

4*7*10 = 280 = correct  

Hope this helped!

answer: i can’t tell you that

step-by-step explanation:

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)