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svlad2 [7]
2 years ago
7

Find the x value X+5=11

Mathematics
2 answers:
Vitek1552 [10]2 years ago
8 0

Answer:

x=6

Step-by-step explanation:

Bumek [7]2 years ago
5 0

Answer:

x=6

Step-by-step explanation:

x+5=11

   -5 -5

cross out 5 and -5

11-5 =6 so x=6

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Combine like terms<br><br> 4y^2+4(7y^2-8)=<br><br> please show your work
kirza4 [7]

Answer:

32y^2-32

Step-by-step explanation:

4y^2+4(7y^2-8)

4y^2+28y^2-32

32y^2-32

if you need extra steeps explaining then plz let me know and I will help :)

8 0
3 years ago
Four times the sum of some number plus 3 is equal to 8 times the number minus 12
Stells [14]

Answer: 4(x+3)= 8x-12

Step-by-step explanation:

4 0
2 years ago
The cost C (in dollars) of making n watches is represented by C=15n 85. How many watches are made when the cost is $385?
FromTheMoon [43]
We know that C is 385, so we can plug that in to get the equation 385=15n+85. To find the number of watches, we have to solve for n.
To do that we have to...

385=15n+85

First subtract both sides of the equal sign by 85 (because we need to do the opposite)

300=15n (because 85-85 is zero, so we eliminated that, and 385-85 is 300)

Now we divide both sides of the equal sign by 15 (again, opposites)

20=n (because 15n/15 leaves us with n since both 15s cancel out, and 300/15 is 20)

So the number of watches made were 20.
7 0
3 years ago
What is the average rate of change of the function f(x)=4(2)^x from x = 0 to x = 2? Enter your answer in the box.
bekas [8.4K]

average rate of change is just the slope from (0,f(0)) to (2,f(2))


basically, average rate of change=slope=\frac{f(2)-f(0)}{2-0}

evalaute each

f(2)=4(2)^2=4(4)=16

f(0)=4(2)^0=4(1)=4


so average rate of change=\frac{16-4}{2-0}=\fracc{12}{2}=6

average rate of change is 6

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