Hi
2n³ + 4n² - 7 + (-n³ - 8n - 2) = 2n³ - n³ + 4n² - 8n - 7 - 2
n³ + 4n² - 8n - 9
Answer: n³ + 4n² - 8n - 9
Answer:2 in.
Step-by-step explanation:
Given
Dimension of photo frame is 
If the photo cover an area of 
Suppose x be the width of border
Therefore dimension of frame without border is
And 
must be equal to
So,
Thus there are two values of x out of which 
is not valid because it is not feasible
thus width of border is 
Answer:
<h2><u>
24</u></h2>
Step-by-step explanation:
All you have to do is subtract....
<h3>Ask yourself hmmm... what is 40t - 16t.</h3><h2> 40</h2><h2>-<u>16 </u></h2><h2>24t</h2>
And there you have it as your answer have a nice day!
Step-by-step explanation:
earbuds
we have a 1in : 0.2in scale of drawing to reality.
0.2 = 2/10 = 1/5
so, 1in in the drawing is actually 1/5in in reality.
how long are the 4in in the drawing ?
well, 4 times the 1in thing.
4×1/5 = 4/5 = 0.8in long
again the similar triangles
similar triangles means that each pair of corresponding lines (sides, heights, ...) in the triangles follows the same scaling factor for the length.
so, what do I need to multiply the side of the large triangle with to get the corresponding side length of the small triangle ?
27 × x = 9
x = 9/27 = 1/3
and that is the scale factor.
Answer:
QR = 1.3
Step-by-step explanation:
Sides TQ and TS are congruent, thus Δ QST is isosceles.
RT is a perpendicular bisector, that is it bisects QS at right angles, thus
QR = RS = 1.3
