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Ludmilka [50]
3 years ago
8

Expand and simplify (n-2)(3n+7) + 2n(2n+3)

Mathematics
1 answer:
KonstantinChe [14]3 years ago
6 0
3n^2+7n-6n-14+4n^2+6n= 7n^2+7n-14

Hope that helps and best of wishes!
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A contractor wants to replace the baseboard of a room whose length is 15 feet and width is 6 feet. How much will the baseboard c
fomenos

It will cost $18.

15*6=90

90/5=18

It will cost $18.

3 0
3 years ago
Can someone pls pls PLS, help me out? ASAP!! (Geometry)<br> “Complete the proof”
Maru [420]

1) \overline{AB} \perp \overline{BD}, \overline{AB} \cong \overline{DB}, \overline{AC} \cong \overline{DE} (given)

2) \angle ABD is a right angle (perpendicular lines form right angles)

3) \triangle ABD and \triangle DEB are right triangles (a triangle with a right angle is a right angle)

4) \triangle ABD \cong \triangle DEB (HL)

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8 0
1 year ago
Each side of the smaller square in the figure below is n inches long, and each side of the larger square is p inches longer than
lana66690 [7]

Answer:

2np + p²

Step-by-step explanation:

The general formula for the area of a square is A = s², where s = the length of one side of the square.  In the case of the smaller square the area would be: n x n = n².  Since the side of the larger square is 'p' inches longer, the length of one side is 'n + p'.  To find the area of the larger square, we have to take the length x length or (n +p)².

Using FOIL (forward, outside, inside, last):

(n + p)(n+p) = n² + 2np + p²

Since the area of the first triangle is n², we can subtract this amount from the area of the larger square to find out how many square inches greater the larger square area is.

n² + 2np + p² - n² = 2np + p²


8 0
3 years ago
217 is what percent of 620
Flura [38]
\sf  \dfrac{217}{620}  \\  \\ = 0.35 \\  \\ Convert \ the \ decimal \ percent \ by \ multiplying \ 100 \\  \\  0.35 \times 100  \\  \\ = 35\%
3 0
2 years ago
Karma's brother was born
torisob [31]

Answer:

Basically just add 12 to the hour that you want

Step-by-step explanation:

I'm honestly not sure what you're asking...

but if it was 13 min after 8pm, then it would be 20:13

if it was 18 min after 8pm, then it would be 20:18

6 0
2 years ago
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