help me please!?!?!
4.) which of the following expressions when evaluated yields a true statement?
a.) 14 - 2m ≤ 8+3m when m=1
b.) 5x-1 > 3x+7 when x= 5
c.) 5x- x/3 ≥ 0 when x= -3
d.) 2x-1 = 4x+9x = -4
5.) which property is is demonstrated?
25+84=84+25
a.) commutative property of addition
b.) commutative property of multiplication
c.) association property of addition
d.) association property of multiplication
6.) Combine like terms to simplify the expression
5+7+15xy^2+8y^3+10x-13xy^2-3x-9y^3
a.) -y^3+2xy^2+7x+12
b.) -y^6+2x^2y^2+10x+12
c.) -y^3-2xy^2+10x+15
d.) -y^3+2xy^2+10x+1
4.) which of the following expressions when evaluated yields a true statement?
a.) 14 - 2m ≤ 8+3m when m=1
b.) 5x-1 > 3x+7 when x= 5
c.) 5x- x/3 ≥ 0 when x= -3
d.) 2x-1 = 4x+9x = -4
5.) which property is is demonstrated?
25+84=84+25
a.) commutative property of addition
b.) commutative property of multiplication
c.) association property of addition
d.) association property of multiplication
6.) Combine like terms to simplify the expression
5+7+15xy^2+8y^3+10x-13xy^2-3x-9y^3
a.) -y^3+2xy^2+7x+12
b.) -y^6+2x^2y^2+10x+12
c.) -y^3-2xy^2+10x+15
d.) -y^3+2xy^2+10x+1
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4. b
5x-1 > 3x+7 when x= 5
25-1 > 15+7
24 > 22, which is true
5. a
It obviously involves addition, and the commutative property says that a+b = b+a
6. a
The y^3 terms are 8y^3 - 9y^3 = -y^3
The xy^2 terms are 15xy^2 - 13xy^2 = 2xy^2
The x terms are 10x - 3x = 7x
The constant terms are 5+7 = 12
Put them together, and clearly a is correct
5x-1 > 3x+7 when x= 5
25-1 > 15+7
24 > 22, which is true
5. a
It obviously involves addition, and the commutative property says that a+b = b+a
6. a
The y^3 terms are 8y^3 - 9y^3 = -y^3
The xy^2 terms are 15xy^2 - 13xy^2 = 2xy^2
The x terms are 10x - 3x = 7x
The constant terms are 5+7 = 12
Put them together, and clearly a is correct
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4.
a. Plugging m = 1
14 - 2 = 12 and 8 + 3 = 11.
So incorrect
b. Plugging x = 5
25 - 1 = 24 and 15 + 7 = 22
So 24 is > 22 and correct
c.Plugging in x = -3
-15 + 1 = -14, so < 0 incorrect
d. Plugging in x = -4
-8 - 1 = - 16 + 9
-9 does not = -7 so incorrect
5. I think it's communitive properties of addition. It is definitely nothing to do with multiplication, so I suggest looking up the difference between communitive and associative properties.
6. Start with know terms
5 + 7 = 12
15xy^2 - 13xy^2 = 2xy^2
8y^2 - 9y^2 = - y^3
10x - 3x = 7x
So looks like a is the answer
a. Plugging m = 1
14 - 2 = 12 and 8 + 3 = 11.
So incorrect
b. Plugging x = 5
25 - 1 = 24 and 15 + 7 = 22
So 24 is > 22 and correct
c.Plugging in x = -3
-15 + 1 = -14, so < 0 incorrect
d. Plugging in x = -4
-8 - 1 = - 16 + 9
-9 does not = -7 so incorrect
5. I think it's communitive properties of addition. It is definitely nothing to do with multiplication, so I suggest looking up the difference between communitive and associative properties.
6. Start with know terms
5 + 7 = 12
15xy^2 - 13xy^2 = 2xy^2
8y^2 - 9y^2 = - y^3
10x - 3x = 7x
So looks like a is the answer
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I think #4 is C, but I'm high so don't count on it ;)