Whats the answer to 45=x(14-x)

Answers

Answer 1

Answer: $45=x(14-x)\n \n45=14x-x^2\n \nx^2-14x+45=0\n \n\Delta = b^(2)-4ac = (-14)^(2)-4*1* 45=196-180=16 \n \nx_(1)=(-b-√(\Delta ))/(2a) =(14- √(16))/(2)=(14-4)/(2)= (12)/(2)=6\n \nx_(2)=(-b+√(\Delta ))/(2a) =(14+√(16))/(2)=(14+4)/(2)= (18)/(2)=9$

Answer 2

Answer: $45=x(14-x)\n\n45=x\cdot14-x\cdot x\n\n45=14x-x^2\n\n-x^2+14x-45=0\n\na=-1;\ b=14;\ c=-45\n\n\Delta=b^2-4ac;\ \Delta=14^2-4\cdot(-1)\cdot(-45)=196-180=16\n\nx_1=(-b-\sqrt\Delta)/(2a);\ x_2=(-b+\sqrt\Delta)/(2a)\n\nx_1=(-14-√(16))/(2\cdot(-1))=(-14-4)/(-2)=(-18)/(-2)=9\n\nx_2=(-14+√(16))/(2\cdot(-1))=(-14+4)/(-2)=(-10)/(-2)=5$

$Answer:x=9\ or\ x=5.$

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Which sentence uses punctuation correctly? a. The last book in the series, borrowed from a classmate, is quite long.
b. The last book in the series borrowed from a classmate is quite long.
c. The last book in the series borrowed from a classmate, is quite long.
d. The last book in the series, borrowed from a classmate is quite long.

Answers

It would probably be A because it makes more sence

Does the equation y=x/2
represent a proportional relationship?

Answers

Answer:

Yes, y=x/2 is a proportional relationship.

Step-by-step explanation:

As x increases, y increases too.

Answer:

Yes

Step-by-step explanation:

y=.5x

Identify the lateral area and the surface area of a right rectangular prism with an 8 cm by 9 cm base and a height of 13 cm.A: L = 704 cm2 ; S = 936 cm2
B: L = 442 cm2 ; S = 586 cm2
C: L = 442 cm2 ; S = 514 cm2

Answers

it's A: L =704cm2; S =936cm2
because your multiplying your length and width (8x9) =72
multiply 72 by the height and you get your answer for S = 936cm2

What is 8.5% as a decimal

Answers

Answer:

0.085.

Step-by-step explanation:

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Answer:

0.085

Step-by-step explanation:

So, 8.5% means 8.5 per 100 or simply 8.5/100. If you divide 8.5 by 100, you get 0.085 (a decimal number).

Oscar is sealing his boat with a special type of sealent. he needs to mix the sealant with water at a ratio of 3:2. How many gallons of water will he need if he planes to use 9 gallons of sealant?

Answers

3/2 9/x . You have to cross Multiplty.

2*9=18
3*x= 3x

18=3x
*Divide 3 from both sides

6=x

E
Which algebraic expression represents the phrase "v less than 93"?

Answers

The algebraic expression which represents the given statement ''v less than 93" is, v < 93

What are inequalities?

Inequalities are the comparison of mathematical expressions, whether one quantity is greater or smaller in comparison to another quantity.

We use these symbols to represent inequalities, '>' , '<', '≥', '≤'

Given that,

The statement,

"v less than 93"

In algebra, inequality sign is used for representation of greater or lesser values of expression

So, here inequality sign can be used

⇒ v < 93

Hence, the inequality is v < 93

To know more about inequalities check:

brainly.com/question/28823603

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Answer: