First you will combine the “x’s” so x+2x=3x then you would add 10 and 6 16 and subtract it to move it to the other side of the = so 2-16= -14 then you would divide 3x and -14 by 3 then there is your answer hope this helps

8 0

2 years ago

The length of the tunnel is 460miles. If 1 inch represents 60 miles what is the length of the tunnel?

kotegsom [21]

Answer:

The length of the tunnel is 7.66667 inch

Step-by-step explanation:

We are given

1 inch =60 miles

now, we can find for 1 mile

so,

60 miles = 1 inch

we get

$1mile=\frac{1}{60}inch$

we are given

total length is 460 miles

so, we can multiply both sides by 460

$460\times 1mile=460\times\frac{1}{60}inch$

now, we can simplify it

$460miles=7.66667inch$

So,

The length of the tunnel is 7.66667 inch

5 0

2 years ago

Plsssssssssssss helpppppppp

STatiana [176]

Answer:

the last one

Step-by-step explanation:

5 0

3 years ago

Solve the equation log4(x + 20) = 3

salantis [7]

Answer:

Step-by-step explanation:

I don not understand what is for 4 here. So there are 2 cases:

Case 1: If you mean: log[4(x+20)]= 3

We know 3 = log(10^3)= log(1000)

So we have log[4(x+20)]= log(1000)

so 4(x+20)= 1000

and x+20 = 1000/4

x+20 = 250 and finally x= 250-20, x=230

The solution is 230.

Case 2; If you mean that 4 is the base of logarithm.

$log_{4}(x+20)= 3$

and we know that $3=log_{4}(3^{4} )= log_{4}(81)$

So we have $log_{4}(x+20)= log_{4}(81)$

and x+20 = 81

or x= 81-20

x=61

The answer is 61.

Hope that useful for you, both cases.

5 0

2 years ago

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