MATHEMATICS MIDDLE SCHOOL

Thirteen decreased by a number​

Answers

Answer 1
Answer:

Answer:

13 -n

Step-by-step explanation:

Decreased means subtract

Let n equal the number

13 -n
Answer 2
Answer:

Answer:

13-n

Step-by-step explanation:

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How to multiply radical expressions

Answers

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I need help with 32-35 please and it’s due tomorrow

Answers

Answer:

32) 11, rational

33) 0.7, rational

34)  approximately 3.9, irrational

35) approximately 31.6, irrational

How do you find out if something is as likely as not?

Answers

Well if the definition is very probably then it should be easy.

Find the value of:27x^(3)+8 y^(3) if 3x+2y = 20 and xy = (14)/(9)

Answers

27x^3+8y^3=(3x)^3+(2y)^3=(3x+2y)[(3x)^2-3x\cdot2y+(2y)^2]\n\n=(3x+2y)[(3x)^2+2\cdot3x\cdot2y+(2y)^2-3\cdot3x\cdot2y]\n\n=(3x+2y)[(3x+2y)^2-18xy]=(*)\n---------------------------\n3x+2y=20\n\nxy=(14)/(9)\n------------------------------\n(*)=20\cdot(20^2-19\cdot(14)/(9))=20\cdot(400-18\cdot(14)/(9))=20\cdot(400-2\cdot14)\n\n=20\cdot(400-28)=20\cdot372=7440



a^3+b^3=(a+b)(a^2-ab+b^2)\n\n(a+b)^2=a^2+2ab+b^2

33pt = blank qt blank pt

Answers

33 pints equals 16.5 quarts
                  KEY                
  1 pints equals 0.5 quarts
                                        
~Just simply multiply 0.5 by 33 to get your answer of:
16.5 quarts 
~.~.~.~.~.~.~.~.~.~.~.~.~.~
~Hope this helps :)
So,

I assume you want the answer in quarts and then pints with remainder.

2 pt. = 1 qt.

32 pt. = 16 qt.

33 pt. = 16 qt. 1 pt.

Dean is a certified personal trainer, and before taking on new clients, he wants to finalize his pricing plans. One plan is to charge $10 for the initial consultation and then $45 per session. Another plan is to charge $30 for the consultation and $35 per session.

Answers

let a be the cost of the fist plan
b is the cost of the second plan
t is the number of session

a = 45t + 10
b = 35t + 30

solve when will the cost be equal
45t + 10 = 35t + 30
10t = 20
t = 2
after two session plan a will always be more expensive than plan b
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