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Rudiy27
3 years ago
15

Solve. x² – 8x - 12 = 36

Mathematics
1 answer:
professor190 [17]3 years ago
7 0

sorry answered the wrong one..

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What is -21% as a decimal
AnnZ [28]

Answer:

− 0.21

Step-by-step explanation:

Convert to a fraction, then convert to a decimal by dividing the numerator by the denominator.

5 0
3 years ago
Read 2 more answers
A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 feet from the dock, the
Natali5045456 [20]

Given :

A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 feet from the dock, the length of the rope form the boat to the dock is 3 feet longer than twice the height of the dock above the water.

To Find :

The height of the dock.

Solution :

This will make a right angle triangle as given in link below .

Now , applying Pythagoras theorem :

(2h+3)^2=h^2+12^2\\\\4h^2+9h+9=h^2+144\\\\h^2+4h-45=0\\\\(h-5)(h+9)=0

Now , h = 5 or h = -9 .

Now , height cannot be negative .

So , height of the dock is 5 ft .

Hence , this is the required solution .

8 0
3 years ago
Six times the sum of a number and twelve is forty. Which equation represents this?
luda_lava [24]

Answer:

6n + 12 =40

Step-by-step explanation:

5 0
2 years ago
(-3)(8+-10)!!!!!!!!!!!!!!!!!!!!!
evablogger [386]
(-3)(8+-10)
(-3) • ( -2)
which equals 6
8 0
3 years ago
a house on the market was valued at 446000 after several years of value increased by 15% by the how much did the house value inc
olga_2 [115]

Answer:

the house will have gained $66,900$ worth of value putting the house worth at $512,900$

Step-by-step explanation:

446,000  ➗  100 X  15 = 66,900

446,000 + 66,900 = 512,900

hope this help if you need any more help P.M. me.

6 0
3 years ago
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