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masha68 [24]
3 years ago
11

What is the answer to (2a + 3)??

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
6 0

Answer:

the answer is 3

Step-by-step explanation:

first you isolate the variable and then add or subtract:))

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What is the probability of throwing 2 dice and getting the sum of 12?
Natasha_Volkova [10]

Answer:

1/36

Step-by-step explanation:

P(6,6) = 1/6 x 1/6 = 1/36

4 0
3 years ago
If K(3, -7) is rotated 270°, what will be the coordinates of its image
gavmur [86]

Answer:

<em>Given </em><em>point </em><em>is </em><em>K </em><em>(</em><em> </em><em>3</em><em>,</em><em> </em><em>-</em><em>7</em><em> </em><em>)</em>

Step-by-step explanation:

Rotation through 270

K ( 3, -7) K'( -7 , -3 )

Hope it was helpful

7 0
2 years ago
Read 2 more answers
Please give me an approximation of how long it would take to evacuate a population of 91,000 to a destination 21 miles away, usi
RoseWind [281]

Answer:

The time will depend on the number of people who move on each trip from the point of origin to the destination. If done at the maximum speed allowed using 100 vehicles of 50 seats each, the evacuation would be done in 63.68 hours

Step-by-step explanation:

Population = 91,000 ppl

Speed limit = 60 mph

Distance = 21 miles.

1. <em>Assuming that people is evacuated at the max. speed allowed, it means that each trip will take</em>:

T = D/V

D= 21 miles

V = 60 mph:

So;

T = 21 miles / 60mph

T= 0,35 h

2. Asumming that we are going to use an amount of 100 vehicles  with 50-seats in each trip for evacuating people, it means that we could evacuate

500 people every 0,35 h ≈ 1,429 ppl/hour <em>(evacuation rate)</em>

To know how long it would take us to evacuate 91,000 people under these conditions, we would have to divide the total amount by the previously calculated evacuation rate

T= 91,000/ 1,429 = 63,68 hours

             

6 0
3 years ago
An electric company charges a certain rate per kilowatt-hour (\text{kWh})(kWh)left parenthesis, start text, k, W, h, end text, r
Studentka2010 [4]

Step-by-step explanation:

The equation is given by :

63.25=800r+3.50

Here,

63.25 is the electric company charges

3.5 is an administrative fee

800 is charge per kilowatt hours

r is rate per kilowatt hour

In this proble, we need to tell that what does r represents. Hence, r shows kilowatt per hour.

We can solve it as follows :

63.25-3.5=800r+3.50-3.50 (Subtracting 3.50 to the both sides)

59.75=800r

r=\dfrac{59.75}{800}\\\\r=0.0746

8 0
3 years ago
Write an= 8 + (n-1)(3) as a function
Citrus2011 [14]

Answer:

The answer to your question is 3n+5

5 0
2 years ago
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