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Lelu [443]
2 years ago
12

Grant paid $12 for 4 baseball card packs.How many baseball card packs can he purchase for $21

Mathematics
1 answer:
svp [43]2 years ago
5 0
First find the cost of single baseball card pack.
Cost per pack= $12/4 = $3 

Now number of packs he can purchase for $21= 21/3 = 7 packs


Answer: 7 
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An optical inspection system is used to distinguish among different part types. The probability of a correct classification of a
Whitepunk [10]

Answer: \mu=2.88\ \&\ \sigma^2=0.115

Step-by-step explanation:

Given : The probability of a correct classification of any part is : p=0.96

sample size : n= 3

The formula to find the mean and variance for binomial distribution is given by :-

\mu=np\\\\\sigma^2=np(1-p)

Let the random variable X denote the number of parts that are correctly classified.

The, for the given situation, we have

\mu=3(0.96)=2.88\\\\\sigma^2=(3)(0.96)(1-0.96)=0.1152\approx0.115

Hence, the mean and variance of X are 2.88 and 0.115 respectively.

4 0
3 years ago
Find the length of AB when A(-4,1) and B(3,-1). Round to the nearest tenth (one decimal place) if necessary.
ivanzaharov [21]

Answer:

7.3 units is the answer rounded

8 0
3 years ago
Which statement describes the function shown on the graph
Anna007 [38]
Let’s use process of elimination
Since the y intercept is at (0, y)
It is around -9 and -10
It cannot be A or C
Now for slope, it is moving up at a steep pace. The slope should be positive.
For D, the slope is too little.
Therefore, it has to be B

Solution: B
7 0
2 years ago
The cost is $6.75 for 1 item. Find the cost of 8 items
scoray [572]

Answer:

$54

Step-by-step explanation:

Multiply the cost by the number of items

6.75x8=54

The cost is $54

5 0
3 years ago
Read 2 more answers
PlEase explain where the decimal and zero comes in for 4840/90?
Anika [276]

Answer:

Read my explanation

Step-by-step explanation:

Since they both end with a 0, you can just cancel it out. So you'd have 484/9.

The answer to that is 53.7777777777...

So the decimal would come before the 3 and after the 7.

I hope this helped and have a good rest of your day!

6 0
3 years ago
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