Answer:
x=3
Step-by-step explanation:
3x-6x+7=-2
subtract 7 from both sides
3x-6x=-9
-3x=-9
3x=9
x=3
Answer:
6 books for $21
Step-by-step explanation:
In order to find the better deal you need to know what the cost is for 1 book corresponding to each deal, you do this by dividing the cost of the books by the total amount of books.
21/6 = $3.5
15/4 = $3.75
You can get books for a better deal by buying 6 books for $21
All the angles must add to 180degrees in a triangle.
180 = 59 + 35 + x
180 = 94 + x
86 = x
Supplementary angles x and z add to 180
180 = x + z
180 = 86 + z
94 = z
Now the last triangle is with angles 11, z, and y
they must add to 180 so...
180 = 11 + z + y
180 = 11 + 94 + y
180 = 105 + y
75 = y
Hope this helps!
Answer: I cheated and looked it up. It says parabola or basic parabola.
Answer:
9 hours
Step-by-step explanation:
0.92 times 9=8.28 meaning 9 additional minutes
now add 1.53 with 8.28 making the total cost 9.81
In conclusion 9 hours.