Dude its way too hard seriously
Answer:
-2 1/6
Step-by-step explanation:
4(-2 1/3) + 7 1/6
-9 1/3 + 7 1/6
-2 1/6
(if you don't wanna read all this the answer is at the bottom btw)
move the 7 over to equate the equation to 0
4x^2 - 12x -7 = 0
(ok now you have a (4), b (-12), and c (-7) here you can either use the quadratic formula to solve it or factor the equation)
to factor it, you have to multiply a and c (4*-7 = -28) and find two numbers that multiply to -28 and add to -12
the numbers are -14 and 2. sub those into the equation in place of b
4x^2 + 2x - 14x - 7 = 0
find the lcd of the first two terms and the last two terms to factor them
2x(2x + 1) - 7(2x+1) = 0
(2x -7) (2x+1) = 0
(x-7/2)(x+1/2) = 0
to find the two x values you need to find what values make the equation equal 0 on both sides.
so x is 7/2 or -1/2
Answer:
direct relation between distance travelled by a train and its speed, when time is constant.
Step-by-step explanation:
We know that the speed of an object is the total distance covered divided by total time taken. Mathematically, it is given by :
Where
d is distance
t is time taken
It can be seen that relation between the distance and the speed is direction. Hence the correct option is (a) "direct".
Answer:
No
Yes
No
Step-by-step explanation:
8 glitter wands for $50. 50/8 = $6.25 for each glitter wand.
1) 4 sparkle wands for $20. 20/5 = $4 for each sparkle wand.
Does NOT have same price per wand as glitter wands.
2) 6 fairy wands for $37.50. 37.5/6 = $6.25 for each fairy wand.
Has the same price per wand as glitter wands.
3) 10 glow wands for $65. 65/10 = $6.50 for each glow wand.
Does NOT have same price per want as glitter wands.
Hope that helps!