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3 years ago

Hey, help me with this pls i only have 10 minutes. 30 points each :)

Mathematics

2 answers:

vlada-n [284]3 years ago

7 0

Answer:

y=-2x

Step-by-step explanation:

First you want to remember rise over run. Your rise is -2 and your run is 1. So -2/1 is your answer. And -2/1 is equal to -2.

yuradex [85]3 years ago

3 0

Answer:

$\frac{2} {-1}$ =-2

Step-by-step explanation:

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Possible number of learners in the

Anestetic [448]

Find multiples of 30 and 40:

30: 30, 60, 90, 120, 150

40: 40, 80, 120, 160

The least common multiple is 120, so every 120 minutes they willl both ring.

1 hour = 60 minutes:

120/60 = 2 hours.

The bells ring together every 2 hours.

8 + 2 = 10 am

10 + = 12pm

12 + 2 = 2 pm

The bells will ring together at am, 12 pm and 2 pm.

6 0

3 years ago

Read 2 more answers

Kevin and Randy Muise have a jar containing 47 coins, all of which are either quarters or nickels. The total value of the coins

SVETLANKA909090 [29]

Ik but learn its simple but there is multiple answers

4 0

3 years ago

Total bill for repairs is 329.00

sergij07 [2.7K]

Answer:

3 hours was spent on labor

Step-by-step explanation:

<u>Key skills needed: Creating an equation, Solving an equation</u>

1) The total cost is 329.00 (or 329). The parts are 125.00 (or 125), and the labor is 68 per hour.

2) If we say h is the number of hours of labor, then we can create this equation --> $68h$ (or 68 multiplied by "h") 68h would be the cost of labor, and we need to find the number of hours (h) as a number.

3) We can create this equation --> $329 = 125 + 68h$

--> This equation can be made as the total cost (329) is equal to the parts (125) and the labor (68h)

4) Subtract 125 from both sides to get 68h by itself

--> 329 - 125 = 204 so 204 = 68h

--> Divide by 68 on both sides (204 divided by 68 is 3)

--> This means that h is 3.

Therefore, the number of hours spent on labor is 3.

<em>Hope you understood and have a nice day!! :D</em>

5 0

2 years ago

The table of ordered pairs (x, y) gives an exponential function.

Basile [38]

Answer:

f(x) = 12*(2)^x

Step-by-step explanation:

A generic exponential equation is written as:

f(x) = A*(r)^x

And we also know that this equation passes through:

(-1, 6)

(0, 12)

(1, 24)

(2, 48)

For the second point, (0, 12) we know that when f(0) = 12

Then:

f(0) = 12 = A*(r)^0

And for every real number different than zero, a^0 = 1

Then:

f(0) = A*1 = A = 12

Then the equation is:

f(x) = 12*(r)^x

Now we can use one of the other points, like (1, 24)

Then f(1) = 24

We can solve:

f(1) = 24 = 12*(r)^1 = 12*r

24/12 = r

2 = r

Then the equation is f(x) = 12*(2)^x

Now we need to check if this function also passes through the points (-1, 6) and (2, 24):

f(-1) = 12*(2)^-1 = 12/2 = 6

f(2) = 12*(2)^2 = 12*4 = 48

Nice.

So we can see that the function is f(x) = 12*(2)^x

6 0

2 years ago

PLEASE HELP ME! THANK YOU!

Elza [17]

9514 1404 393

Answer:

-5/2

Step-by-step explanation:

The average rate of change is the slope of the line between the two points. You can see from the graph that the slope is ...

slope = rise/run = -5/2

The average rate of change on the interval is -5/2.

7 0

2 years ago