Which permanent teeth eruption usually occurs first? A. Central incisors. B. Lateral incisors. C. Cuspids (canines). D. First premolars (Bicuspids).

Answer:

y=1/3x-9

Step-by-step explanation:

y+6=1/3(x-9)

i.e y=1/3x -3-6

i.e, y=1/3x -9

it's in slope intercept form now,i.e, in form y=mx+c,where m is slope of st. line,here 1/3 is slope!

✌️:)

Answer:c

Step-by-step explanation:

Answer:

Theres no picture below

Step-by-step explanation:

Answer: Hello mate!

we have the system of equations

30x + 30y = 450

20x + 25y = 345

where x is the number of square feet of snow that Melinda shovels in one minute, and y is the number of square feet of snow that Paul shovels in one minute.

Let's solve the system of equations, first, isolate one of the therms in the first equation, for example, x.

30x+30y = 450

x + y = 450/30 = 15

x = 15 - y

now we can replace it in the second equation and solve it for y.

20x + 25y = 345

20(15 - y) + 25y = 345

300 - 20y + 25y = 345

5y = 45

y = 45/5 = 9

Paul can shovel 9 square feets of snow in one minute, now replace it in the first equation and solve it for x.

x + y = 450/30 = 15

x + 9 = 15

x = 15 - 9 = 6

so melinda sholves 6 square feet of snow in one minute.

The question is:

How much more can Paul shovel in 1 minute than Melinda?

We need to see the difference y - x = 9 - 6 = 3

this means that paul shovels 3 more square feet per minute than Melinda.

Answer:

21x- 21

Step-by-step explanation:

7 × (x × 3 - 3)

7 × (3x - 3)

21x - 21

I'm not sure if the answer is correct