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yarga [219]
2 years ago
15

You rode your bike for 5 miles in 30 minutes.

Mathematics
1 answer:
Nezavi [6.7K]2 years ago
5 0
It’s False, you’d have to divide the number of minutes by the miles to get how many minutes it took PER mile to ride your bike. 30/5 is 6 therefore it takes 6 minutes per mile. if you were to multiply 6 times 12 miles it would equal 72 minutes.
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A particular brand of dishwasher soap is sold in three sizes: 25 oz, 40 oz, and 65 oz. Twenty percent of all purchasers select a
Elodia [21]

Answer:

Step-by-step explanation:

Given that:

There are 3 sizes of dishwasher soaps.

Twenty percent of all purchasers select a 25-oz box, 50% select a 40-oz box, and the remaining 30% choose a 65-oz box. Let X1 and X2 denote the package sizes selected by two independently selected purchasers.

Therefore, 3 \times 3 = 9 random samples of size 2 are taken from the population.

The information is well represented in the table below.

x_1     x_2     p(x_1 \ x_2) = p(x_1)p(x_2)    \bar x = \dfrac{x_1+x_2}{2}     s^2= (x_1-\bar x)^2 +(x_2-\bar x)^2

25    25    0.20×0.20=0.04        25                              0

25    40    0.20×0.50=0.10         32.5                         112.5

25    65    0.20×0.30= 0.06        45                            800

40    25    0.50×0.20=0.10         32.5                          112.5

40    40    0.50×0.50=0.25         40                             0

40    65    0.50×0.30=0.15          52.5                         312.5

65    25    0.30×0.20=0.06        45                             800

65    40    0.30×0.50=0.15          52.5                         312.5

65    65    0.30×0.30=0.09         65                              0

The sample distribution of \bar x is shown below as ;

\bar x           25        32.5              40       45                  52.5          65

p(\bar x)       0.04   0.10+0.10      0.25   0.06+0.06    0.15+0.15    0.09    

                       = 0.20                      =0.12              =0.30

The value of E(\bar x) = \sum \bar x  \ P(\bar x)

=  25(0.04) + 32.5(0.20) + 40(0.25) + 45(0.12)  +  52.5(0.30)  +  65(0.09)

= 44.5 oz

From the same table above ;

the sampling distribution of {s^2} is be shown below;

{s^2}          0                          112.5            312.5             800

           0.04+0.25       0.10+0.10     0.15+0.15        0.06+0.06

          +0.09

p(s)^2   = 0.38                =0.20           = 0.30               0.12

The value of E(s)^2  =\sum s^2 .p(s)^2

= (0×0.38)+(112.5×0.20)+(312.5×0.30)+(800×0.12)

=0+112+93.75+96

=301.75

5 0
3 years ago
Please explain and solve!!! You won't get points unless you explain!!!
konstantin123 [22]
Area of a rectangle of length L and width W is A = LW.

Here, A = 60 ft^2 = (12 ft)(2x-3  ft).  Let's find the values of x for which the area =60 ft^2, and then the values of x for which the area is greater than 60 ft^2.

60 = 12(2x-3) becomes 5 = 2x - 3 after dividing both sides by 12.

Adding 3 to both sides of this last equation results in 8 = 2x, so x = 4.

Does (12 ft)(2[4 ft] - 3) = 60?  Does (12 ft)(5 ft) = 60 sq ft?  YES.

The area of this rectangle will be greater than 60 sq ft if x>4 ft.  (answer)
4 0
3 years ago
5th Grade Math
LUCKY_DIMON [66]
516 is the dividend, 3 is the divisor, 172 would be the quotient.

3 goes into 5 once with a 2 remainder, that 2 turns into 21 because of the 1 in 516 which 3 goes into seven times with a remainder of zero turning into 6, which 3 goes into twice, making the quotient 172.

172 times 3 is 516
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3 years ago
How many cannonballs are there in the eighth figure
Gala2k [10]

Answer:

36

Step-by-step explanation:

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2 years ago
HELP ME PLEASE!!!! PLEASE EXPLAIN ASWELL ( FOR 30 POINTS)
mina [271]

Answer:

e_3^{4} will be the exponential expression.

Step-by-step explanation:

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4 0
3 years ago
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