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3 years ago

What is a the positive solution of x^2 - 36 =5x

Mathematics

1 answer:

Minchanka [31]3 years ago

3 0

Answer:

Step-by-step explanation:

$x^2-36=5x\qquad\text{subtract}\ 5x\ \text{from bot sides}\\\\x^2-5x-36=0\\\\x^2+4x-9x-36=0\qquad\text{distribute}\\\\x(x+4)-9(x+4)=0\\\\(x+4)(x-9)=0\iff x+4=0\ \vee\ x-9=0\\\\x+4=0\qquad\text{subtract 4 from both sides}\\\\x=-40$

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Find the range of the function:

-BARSIC- [3]

F(x) = x + 2
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8 0

3 years ago

Simplify fully please

neonofarm [45]

Answer:

8x² + 8

Step-by-step explanation:

Given

(x² + 3)² - (x² - 1)² ← expand both factors using FOIL

= $x^{4}$ + 6x² + 9 - ( $x^{4}$ - 2x² + 1) ← distribute by - 1

= $x^{4}$ + 6x² + 9 - $x^{4}$ + 2x² - 1 ← collect like terms

= 8x² + 8

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3 years ago

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A bakery used 25% more butter this month that last month. If the bakery used 240 kilograms of butter last month, how much did it

SCORPION-xisa [38]

Answer:

300kg

Step-by-step explanation:

240(25/100)

240(.25) = 60

25% of 240 = 60, so add that 60 to get an extra 25% for this month

240 + 60 = 300

6 0

3 years ago

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1.20 x 10⁶<br><br>6.0 x 10⁵

omeli [17]

Answer:

$1.20 x 10^{6}=1,200,000\\\\6.0 x 10^{5}=600,000$

Step-by-step explanation:

You move the decimal place over 6 times for the first equation and 5 for the second equation.

Hope this helps! Have a great day! :)

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3 years ago

A water tank in the shape of a rectangular prism has a length of 525 feet, width of 423 feet, and height of 449 feet.

TEA [102]

Answer:

84 cubic feet

Step-by-step explanation:

First, multiply the numbers to get the volume.

5 2/5 * 4 2/3= 25 1/5

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Then, we can find 3/4 of that.

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3 years ago

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What is a the positive solution of x^2 - 36 =5x​

What is a the positive solution of x^2 - 36 =5x