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olya-2409 [2.1K]
3 years ago
9

Pls help me. Pic is attached below

Mathematics
1 answer:
Mademuasel [1]3 years ago
4 0

Answer:

90

Step-by-step explanation:

3b/3=180/3

then u simplify

ur answer will be

b=90

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Solve log_8 12 = x – 2 . Round your answer to four decimal places.
Aleksandr-060686 [28]

Step-by-step answer:

Let's attack the left side:

log_8 12 = log (base 8) 12 = log(12)/log(8) = 1.1949875 (approx.)

Next solve

log_8 12 = x-2

log(12)/log(8) = x-2

x = 2 + log(12)/log(8)

= 3.195 (to one thousandth)

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4 years ago
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Which expression is equivalent to 3 x - 3y
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which expression is equivalent to 3 x - 3y

3 x - 3y

factor out the 3

3(x-y)

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4 years ago
A tank holds 50 gal of water, which drains from a leak at the bottom, causing the tank to empty in 20 min. The tank drains faste
kirza4 [7]

Answer:

(a) V(0) = 50 gal, V(20) = 0 gal

(b)At t= 0 the tank is full.

At t=0 the tank is empty

(c)

Time       volume

 0               50 gal

 5                37.5 gal

 10              25 gal

 15             12.5 gal

20                0 gal

(d)

Net change of volume = 50 gal

Step-by-step explanation:

Given that the capacity of the tank is 50 gal.

Torricelli's Law gives the volume of water remaining in the tank after t minutes as

V(t)=50(1-\frac{t}{20})^2

(a)

To find V(0), we put t = 0 in the above equation

V(0)=50(1-\frac{0}{20})^2

        =50(1-0)^2

        = 50 gal

To find V(20), we put t =2 0 in the above equation

V(20)=50(1-\frac{20}{20})^2

        =50(1-1)^2

        = 0 gal

(b)

At t= 0 the tank is full.

At t=0 the tank is empty.

(c)

Time                                          V(t)

  0                                  50(1-\frac{0}{20})^2=50 \ gal

  5                                  50(1-\frac{5}{20})^2=37.5 \ gal

 10                                  50(1-\frac{10}{20})^2=25 \ gal

 15                                 50(1-\frac{15}{20})^2=12.5 \ gal

 20                                50(1-\frac{20}{20})^2=0

(d)

Net change of volume = V(0) -V(20)

                                     =(50-0) gal

                                    = 50 gal

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
Factor : 49c^2 - 25d^6
Keith_Richards [23]
49c^2 - 25d^6
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The answer is: (7c + 5d^3)(7c - 5d^3).
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4 years ago
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