Answer:
4th option
Step-by-step explanation:
(f + g)(x)
= f(x) + g(x)
= 4x² - 5x + 8 +2x² + x - 2 ← collect like terms
= 6x² - 4x + 6
Answer:
see the explanation
Step-by-step explanation:
we know that
The rule of the reflection of a point across the y-axis is equal to
(x,y) -----> (-x,y)
The rule of the reflection of a point across the x-axis is equal to
(x,y) -----> (x,-y)
so
<u><em>Verify each statement</em></u>
1) Point (3,2) to (3,-2) is a reflection over the y-axis.
The statement is false
Because, is a reflection over the x-axis
A reflection over the y-axis will be
(3,2) -----> (-3,2)
2) A(1,3) to A'(-1,3) is a reflection over the y-axis
The statement is true
Answer:
Step-by-step explanation:
<u>Substitute</u><u> </u><u>x</u><u> </u><u>=</u><u> </u><u>-</u><u>1</u><u> </u><u>in</u><u> </u><u>the</u><u> </u><u>equation</u><u>.</u><u> </u>
Answer:
Janet has coins worth 252.5, 101, and 50.5.
Step-by-step explanation:
Let us call the three coins , and .
The first coin is 5 times another coin<em> (let's say </em>); therefore,
,
and the third coin is 2 times the value of another coin<em> (it's coin </em><em>):</em>
<em /><em>.</em>
The total worth of all coins is 404; therefore,
or
with the value of in hand, we find and :
and for
Thus, Janet has 3 coins worth 252.5, 101, and 50.5.
Answer:
-7x-1
Step-by-step explanation:
6-(9x+7)+2x
-(9x+7): -9x-7
= 6-9x-7+2x
6-9x-7+2x=-7x-1
-7x-1