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Sunny_sXe [5.5K]
3 years ago
13

1 . Evaluate 3a - 12 divided by a for a =4 2. Evaluate 3x- 2y , if x= 5 and y =3

Mathematics
1 answer:
ziro4ka [17]3 years ago
3 0
This is how I understood the question

Hope I helped!

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The Regency Hotel has enough space at its entrance for six taxicabs to line up, wait for guests, and then load passengers. Cabs
maksim [4K]

Answer:

The appropriate solution is:

(1) 22.81 minutes

(2) 0.171

Step-by-step explanation:

According to the question, the values will be:

The service rate of guess will be:

= 5+3.5

= 8.5 \ minutes

The mean arrival rate will be:

\lambda =\frac{60}{5}

  =7.5 \ cabs/hr

The mean service rate will be:

\mu= 7.05 \ cabs/hr

(1)

The average time a cab must wait will be:

⇒ W_q=22.95-\frac{1}{7.05}

⇒       =\frac{161.798-1}{7.05}

⇒       =\frac{160.798}{7.05}

⇒       =22.81 \ minutes

(2)

The required probability will be:

⇒ P(X\geq 6)=\frac{1-2.115}{1-7.5}

⇒                  =\frac{-1.1115}{-6.5}

⇒                  =0.171

6 0
2 years ago
Solve the equation for 5x^2-4x=6
Andrei [34K]

Answer:

x = (4 + 2√34)/10, x = (4 - 2√34)/10

Step-by-step explanation:

5x² - 4x = 6

Subtract: 5x² - 4x - 6 = 0

Quadratic formula: x = (4 ± √(16 - 4*5*(-6)))/10

Multiply: x = (4 ± √(16 + 120))/10

Simplify: x = (4 ± 2√34)/10

8 0
3 years ago
Solve each equation for the indicated variable g=a+c+b,for a
Mariulka [41]

Answer:

a= g-b-c

Step-by-step explanation:

g=a+c+b

g-b=a+c

g-b-c= a

a= g-b-c

3 0
3 years ago
The length of a football field is 120m. what is the length on drawing, if the scale is 1:5m?​
inna [77]
Answer: I believe its 24 meters.
Explanation: Just divide 120 by 5
5 0
3 years ago
Quantity (Bottles of Cleanser) Cost
seraphim [82]

Answer:

D. 8 bottles

Step-by-step explanation:

one bottle of one is obviously $6.50

one bottle of two : $12.50 (1/2) = $6.25

one bottle of four: $26.00 (1/4) = $6.50

one bottle of six: $30.00 (1/6) = $5.00

one bottle of eight: $38.00 (1/8) = $4.75

8 bottles is the best buy

3 0
3 years ago
Read 2 more answers
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