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ss7ja [257]
3 years ago
15

1/4(x+2)+4=12 x=? Help idk

Mathematics
2 answers:
Gnoma [55]3 years ago
5 0

\frac{1}{4}(x+2)+4=12

\frac{1}{4}(x+2)=8

x+2=32

x=30


ki77a [65]3 years ago
5 0

The answer is: x = 30

Step 1: Simplify [ 1/4 (x + 2) to x+2/4 ]

Step 2: Subtract 4 from both sides.

Step 3: Simplify 12-4 to 8

Step 4: Multiply both sides by 4

Step 5: Simply 8 x 4 to 32

Step 6: Subtract 2 from both sides

Step 7: Simplify 32 - 2 to 30.

Let me know if this helps! :)

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A traffic engineer monitors the rate at which cars enter the main highway during the afternoon rush hour. From her data she esti
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Answer:

On average, cars enter the highway during the first half hour of rush hour at a rate 97 per minute.

Step-by-step explanation:

Given that, the rate R(t) at which cars enter the highway is given the formula

R(t)= 100(1-0.0001t^2)

The average rate of car enter the highway during first half hour of rush hour is the average value of R(t) from t=0 to t=30.

\therefore \int_0^{30}  100(1-0.0001t^2)\ dt

=[100(t-0.0001\frac{t^3}{3})]_0^{30}

=100[(30-0.0001\frac{30^3}{3})-(0-0.0001\frac{0^3}{3})]

=2901

The average rate of car is =\frac{\textrm{The number of car}}{Time}

                                           =\frac{2910}{30}

                                          =97

On average, cars enter the highway during the first half hour of rush hour at a rate 97 per minute.

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