Answer:
10.4
Step-by-step explanation:
to simply solve the expression we will insert the known value of x into the expression and evaluate.
12-2x^2/-5x
12 - 2x²/-5x given that x = -4
= 12 - 2 (-4)²/ -5(-4)
= 12 - 2(16)/ 20
= 12 -32/20
don't forget to the BODMAS rule
B...................... bracket
O................. of
D..........................................division
M................................ multiplication
A................................ addition
S.................................. subtraction
so we have,
12 - 32/20
12 - 8/5
find the lcm
60 - 8/5
52/5
10.4
Step-by-step explanation:
b. 3x + 7y = 7
b. 3x + 7y = 75x − 7y = −63
Both the equations have common coordinate point (-7,4)
3x + 7y = 7
LHS = 3(-4)+7(4)= -21+28= 7. RHS = 7
Therefore, the equation satisfies.
5x − 7y = −63
LHS = 5(-7)-7(4) = -35-28= -63. RHS = -63
Therefore, the equation satisfies.
Hello.
The answer is: 2 3/4
Step 1: Simplify both sides of the equation.
22/5x 121/10
Step 2: Multiply both sides by 5/22.
(5/22)* (22/5 x)= (5/22)* (121/10)
Have a nice day
Check the picture below
so... it looks more or less like so
now, notice the "p" distance, bear in mind that, if the parabola opens downwards, "p" is a negative unit, so, in this case -4
thus