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kari74 [83]
2 years ago
9

What is the variable in the expression 2X - 25

Mathematics
1 answer:
SpyIntel [72]2 years ago
8 0
The variable is x.

Hope that helps :)
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Suppose you just received a shipment of twelve televisions. Three of the televisions are defective. If two televisions are rando
qwelly [4]

Answer: The probability that both televisions work is 0.5625 .

The probability at least one of the two televisions does not​ work is 0.4375.

Step-by-step explanation:

Given : Number of televisions received in shipment= 12

Number of defective televisions received in shipment= 3

Then proportion of defective televisions =\dfrac{3}{12}=0.25

Using binomial probability formula, the probability of getting success in x trials is given by :-

P(x)=^nC_xp^x(1-p)^{n-x}

If two televisions are randomly​ selected, then the probability that both televisions work will be :-

P(0)=^2C_0(0.25)^0(0.75)^2=(0.75)^2=0.5625

The probability at least one of the two televisions does not​ work will be :-

P(x\geq1)=1-P(0)=1-0.5625=0.4375

6 0
3 years ago
Please answer this correctly
Nitella [24]

Answer:

=3651 km^2

Step-by-step explanation:

The rectangle at the top is 11 km by 32 km

The area is 11*32 =352

The rectangle at the bottom is 9 km by 11 km

The area is 9*11 = 99

Add the two areas together

352+99 =451 km^2

6 0
3 years ago
Kyra has a rock collection.When she puts her rocks into 2 equal piles,there are no rocks left over.When she puts her rocks into
liubo4ka [24]

any multiple of 12

Since 2, 3 and 4 divide exactly into the number of rocks

We are looking for the common multiples of 2, 3 and 4

2 × 3 × 4 = 24 is possible but dividing by 2 gives 12 the lowest common multiple

Any multiple of 12 gives a possible number of rocks.



8 0
3 years ago
What is the percent or change-----$84 to 12%
zubka84 [21]
<span>$84 to 12%
</span>10.08
 is the answer
6 0
3 years ago
A student always spends Thanksgiving with their family, who lives 99 miles away from their home in Houston. If it took them 9 ho
Harman [31]
The average speed for the trip is 11 miles per hour, or mph. 99 miles divided by 9 is 11
6 0
3 years ago
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