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laila [671]
2 years ago
9

On a bicycle, Anna rides for 4 hours and is 38 miles from her house. After riding for 7 hours, she is 65 miles away. What is Ann

a's rate? miles per hour
Mathematics
1 answer:
Citrus2011 [14]2 years ago
3 0

1 hour = 9.5 miles

Step-by-step explanation:

just divided 38 4 times : )

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Nuts cost 0.75 for 3 pounds find the unit rate in dollars per pound
spin [16.1K]
Alright, so here, we can simply divide 0.75/3=0.25 due to that we need to find  that we need to find the unit rate of each pound, and we have 3, so we need to divide by 3
5 0
3 years ago
When purchasing bulk orders of​ batteries, a toy manufacturer uses this acceptance sampling​ plan: Randomly select and test 56 b
nydimaria [60]

Answer:

98.1% chance of being accepted

Step-by-step explanation:

Given:

sample size,n=56

acceptance condition= at most 2 batteries do not meet specifications

shipment size=7000

battery percentage in shipment that do not meet specification= 1%

Applying binomial distribution

<h3>P(x)=∑ᵇₐ=₀ (n!/a!(n-a)!)p^a (1-p)^(n-a)</h3>

In this formula, a is the acceptable number of defectives;

 n is the sample size; 

p is the fraction of defectives in the population.  

Now putting the value

a= 2

n=56

p=0.01

\frac{56!}{0!\left(56-0\right)!}\left(0.01\right)^0\:\left(1-0.01\right)^{\left(56-0\right)} + \frac{56!}{1!\left(56-1\right)!}\left(0.01\right)^1\:\left(1-0.01\right)^{\left(56-1\right)} +\:\frac{56!}{2!\left(56-2\right)!}\left(0.01\right)^2\:\left(1-0.01\right)^{\left(56-2\right)}

=0.56960+0.32219+0.08949

After summation, we get 0.981 i.e. a 98.1% chance of being accepted.  As this is such a high chance, we can expect many of the shipments like this to be accepted!

7 0
3 years ago
What is the volume of this triangular pyramid?
Vaselesa [24]

Answer:

1560 cubic inches

Step-by-step explanation:

18x20= 360

360x13= 4680

4680/3=1560

8 0
3 years ago
A bag contains 8 red balls and 4 white balls. Two balls are drawn without replacement. (Enter your probabilities as fractions.)
RoseWind [281]

Answer:

total marbles;12

after drawing red total counts are 7 red and 4 white       11 in total

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6 0
3 years ago
The Cost of producing n items is given as C = 5 + 2n, where 5 is initial cost and 2 is a cost per item. Profit is given as P = 3
aleksandrvk [35]
P=5 and initial to the 3 price
4 0
3 years ago
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