Ok so I haven’t done this kind of equation in like a few yrs and I kinda forgot how to look for the median and range and such!
But I think median means middle number and I’m guessing the
[[answer would be 7]]
Sorry if I’m wrong! But I hope this helped in a way!
<33
Answer:
Roots are [4, -14}.
Step-by-step explanation:
1/2 (x+5)^2 + 2 = 42.5
Work out the square of the parentheses:
1/2 ( x^2 + 10x + 25) + 2 = 42.5
Multiply the parentheses by 1/2:
1/2 x^2 + 5x + 12.5 + 2 = 42.5
Subtract 42.5 from both sides of the equation:
1 /2x^2 + 5x +14.5 - 42.5 = 0
Simplify:
1/2 x^2 + 5x - 28 = 0
Multiply through by 2 to get rid of the 1/2:
x^2 + 10x - 56 = 0
Factor:-
(x + 14)(x - 4) = 0
Either x + 14 = 0 giving x = -14.
or x - 4 = 0 giving x = 4.
Answer:
2/3
Step-by-step explanation:
Answer:
( , - )
Step-by-step explanation:
given the 2 equations
2x + 3y = - 4 → (1)
4x - y = 11 → (2)
Rearrange (2) expressing y in terms of x, that is
y = 4x - 11 → (3)
Substitute y = 4x - 11 into (1)
2x + 3(4x - 11) = - 4
2x + 12x - 33 = - 4
14x - 33 = - 4 ( add 33 to both sides )
14x = 29 ( divide both sides by 14 )
x =
Substitute this value into (3) for corresponding value of y
y = (4 × ) - 11 = - = - = -
solution is ( , - )
Answer:
D. all the steps are incorrect
Step-by-step explanation:
she needs to distribute the 2 into the parenthesis first due to PEMDAS
2x+2+1= 5
2x+3=5 then isolate the x
-3 -3
2x=2
(2x)/2=2/2
x=1