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Sauron [17]
4 years ago
11

If the area rectangle below us 39 square feet find the x value

Mathematics
1 answer:
Leya [2.2K]4 years ago
7 0

Answer:

x=5 and x=-11

Step-by-step explanation:

(x-2)(x+8)=39

x^2+6x-16=39

Subtract 39 from both sides

x^2+6x-55=0

Factor:

(x-5)(x+11)=0

Set factors to 0.

x-5 =0

x+11 =0

x=5, x=-11

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Please help me understand how to do this
erastova [34]

Answer:

-1

Step-by-step explanation:

First, find g(3), g(3) is 5.

Next, plug in 5 for g(3).

So we have f(5), f(5) is -1

6 0
2 years ago
My parents recently moved to the Poconos, they got 30 or more inches of
jekas [21]

Answer:

25ft

Step-by-step explanation:

2hr=10ft

5hr=25ft

5-2=3 so you have to find what they did for the 3 hours which is another 2 plus half so 25ft.

7 0
3 years ago
Kevin is 3 years older than Daniel. Two years ago, Kevin was 4 times as old as Daniel. How old is Kevin now?
GuDViN [60]
Let k and d be the Kevin's age and the Daniel's age;
We have the equation:
k = 3 + d;
k - 2 = 4( d - 2 );
We have 3 + d -  2 = 4d - 8;
Then, d + 1 = 4d - 8;
9 = 3d;
d = 3.
Finally, k = 6 years.












6 0
3 years ago
Read 2 more answers
Find the distance between a and b
nataly862011 [7]
THE DISTANCE IS 7 UNITS
8 0
3 years ago
Factorizar Sumas de cubo<br><br><br>1) 8x³ + 1<br><br>2) 27a³ + b³<br><br>3) 8x³ + 1,000
frutty [35]

\huge{\mathbb{{ANSWERS}}}

1.) 8x³ + 1

  • <u>\underline{ \tt{{(2x + 1) \times (4 {x}^{2} - 2x + 1)}}}</u>

2.) 27a³ + b³

  • <u>\underline{ \tt{{(3a + b) \times (9{a}^{2} - 3ab +  {b}^{2})}}}</u>

3.) 8x³ + 1,000

  • \underline{ \tt{{8(x + 5) \times ( {x}^{2} - 5x + 25)}}}

<u>N</u><u>o</u><u>t</u><u>e</u><u>:</u> My anwer is base on my knowledge

<u>H</u><u>o</u><u>p</u><u>e</u><u>f</u><u>u</u><u>l</u><u>l</u><u>y</u><u> </u><u>H</u><u>e</u><u>l</u><u>p</u><u>:</u><u>)</u>

  • <u>#</u><u>C</u><u>a</u><u>r</u><u>r</u><u>y</u><u>O</u><u>n</u><u>L</u><u>e</u><u>a</u><u>r</u><u>n</u><u>i</u><u>n</u><u>g</u>

_MafiaQueen4

8 0
3 years ago
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