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zhenek [66]
3 years ago
8

Find the product of 395 ×76.estimate to check that the answer is reasonable

Mathematics
2 answers:
Orlov [11]3 years ago
6 0

Answer:

30020

estimate 395 x 75 = 29625

the answer is reasonable

Step-by-step explanation:

Reptile [31]3 years ago
3 0

Answer:

an estimation is 30000

Step-by-step explanation:

An estimate is a number that is close, so we round 395 to 400 and 76 to 75

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Consider a small ferry that can accommodate cars and buses. The toll for cars is $3, and the toll for buses is $10. Let X and Y
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Answer:

Expected revenue from the single trip is $ 13.14

Step-by-step explanation:

                              y

p(x,y)                   0               1                                 2                g(x)

x    0           0.025              0.015                       0.010            0.05

1                  0.050            0.030                        0.020           0.1  

2                   0.115             0.075                        0.050           0.24

3                  0.150              0.090                      0.060             0.3

<u>4                   0.100             0.060                     0.040              0.2 </u>

h(y)              0.325              0.27                       0.18  

E (x+Y) = E(X) +E(Y)

E(X)= ∑ xi g(x)i

       = ( 0*0.05) + (1*0.1) + (2* 0.24) + (3*0.3) + (4*0.2)

        = 0 + 0.1+ 0.48 + 0.9+0.8

        =2.28

E(Y)= ∑yi h(y)

      = (0* 0.325) + (1*0.27) + (2*0.18)    

       = 0 +0.27+ 0.36

        = 0.63

E (x+Y) = E(X) +E(Y)

             = 2.28 + 0.63

                = 2.91

But the equation is 3x+ 10y

E(3x+ 10y)= 3E(x) + 10 E(y)

                   = 3(2.28) + 10 (0.63)

                       = 6.84 +6.3

                         = 13.14

Expected revenue from the single trip is $ 13.14

5 0
2 years ago
A car wheel of diameter 35cm spins on a road.Over 2000cm, how many full rotations will the wheel have made?
ra1l [238]
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Answer: 18 full rotations
8 0
3 years ago
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