Answer:
B -9(9x-3)
Step-by-step explanation:
b/c -9(9x-3) means -9×9x-(-3)
= -81x+27
if you say why -(-3) is +27, I will say b/c negative times negetive it give us positive. and if you they why we don't add -81x and 27, I will say b/c they are not like terms.
like terms : are terms with the same variable and same exponent.
example:2x and 3x,5xy and 9yx and etc....
if it helpful ❤❤
THANK YOU
Answer:
2
Step-by-step explanation:
f(x)= 2x^5-3x^3+2x^2+1
Let x=1
f(1)= 2(1)^5-3(1)^3+2(1)^2+1
= 2*1 -3*1+2(1) +1
= 2-3+2+1
2
Answer:
5x+9y≤32
Step-by-step explanation:
Let x be the number of cassette tapes you purchase.
Let y be the number of CDs you purchase.
The problem is you only have $32 to spend.
Different combinations of tapes and CDs are possible. We want an equation showing this relationship.
One cassette tape costs $5. The cost for any number of cassette tapes is $5 times the number
purchased; that's 5 times x, or 5x.
To find the cost of CDs purchased, we multiply $9 times the number of CDs, $9 times y or 9y.
The cost of the total purchase is
[the cost of the cassettes] + [the cost of the CDs] or
5x + 9y
Hope this helps!!
Answer:
x² - 4x + 3 = 0
Step-by-step explanation:
given roots x = a and x = b then the corresponding factors are
(x - a) and (x - b)
the equation is then the product of these factors , that is
(x - a)(x - b) = 0
given
roots x = 3 and x = 1 , then factors are (x - 3) and (x - 1) , then
(x - 3)(x - 1) = 0 ← expand factors using FOIL
x² - 4x + 3 = 0
Umm I’d sayyy D? I just get that it is a negative slope therefore the line would be in the negative, meaning it goes down and left rather than right and up. If that makes any sense ♀️
