Answer:
D, Y=2x-4
Step-by-step explanation:
The easiest way to solve this is by substitution. Plug in 3 into the X of each equation to see if you get 2 as your outcome. Double check by doing the same with 8 and seeing if 12 is the outcome. Once you do this, problems like the one should be a piece of cake.
Answer:
the Ans is 3.4
Step-by-step explanation:
8(3x - 7) = -6(x + 7) + 4
24 x – 56 = -6x - 42 + 4
24x - 56 = -6x + 46
30 x = 102
X=3.4
Answer: (2,<u>-5</u>)
Step-by-step explanation:
The slope of the line formed by this set of number is 2 (y increases by 2 for every 1 increase in x). The line has the form y = 2x + b. Enter one of the data points to find b.
y = 2x + b for (2,3)
3 = 2*2 + b
b = -1
The equation is y = 2x - 1
The missing value: y =2*(-2) - 1
y = -5
(2,-5)
Answer:
El ascensor recorrió unos 39 metros
Step-by-step explanation:
Segun la pregunta cada cada piso tiene 3 metros de altura, por lo tanto para calcular los metros que recorrió el ascensor tenemos que hacer el siguiente calculo:
metros desde el primer piso al quinto piso=3 metros*4=12 metros
metros desde el quinto piso al segundo piso=3 metros*3=9 metros
metros desde el segundo piso al octavo piso=3 metros*6=18 metros
Por lo tanto los metros que recorrió el ascensor=12 metros+9 metros+18 metros
metros que recorrió el ascensor=39 metros
El ascensor recorrió unos 39 metros
First, you have to set a system of equations to determine the number of fiction and of nonfiction books.Call f the number of fiction books and n the number of nonfiction books. Then 400 = f + n. And f = n + 40 => n = f - 40 => 400 = f + f - 40 => 400 - 40 = 2f => f = 360 / 2 = 180. Now to find the probability of picking two fiction books, take into account the the Audrey will pick from 180 fiction books out of 400, and Ryan will pick from 179 fiction books out of 399, so the probability will be<span> (180/ 400) * (179/399) = 0.20 (rounded to two decimals). Answer: 0.20</span>