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Rama09 [41]
3 years ago
7

Evaluate 8a- 1+ 0.5b when a = 1/4 and b = 10

Mathematics
2 answers:
Alchen [17]3 years ago
6 0

Step-by-step explanation:

Putting values of a and b

8(1/4) - 1 + 0.5(10)

2 - 1 + 5

1 + 5

= 6

mr Goodwill [35]3 years ago
4 0

Answer: 6

Step by step equation: 8(1/4) which is 2

0.5(10) is 5 so the simplified equation would be 2-1+5 which is 6

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Nuri joins a game for a car. The rule is that Nuri pick one key from box either A, B, or C. A box has two keys but only one can
jek_recluse [69]

Answer:

0.278

Step-by-step explanation:

Given that Nuri joins a game for a car. The rule is that Nuri pick one key from box either A, B, or C. A box has two keys but only one can be used. B box has three keys but only one can be used. C box has two keys but none of them can be used.

Each box is equally likely to be selected.

In other words

P(A) = P(B) = P(C)=\frac{1}{3}

If A is selected then probability of winning is using the correct key out of two keys i.e. 0.5

If B is selected then probability of winning is using the correct key out of three keys i.e. 0.333

If c is selected then probability of winning is using the correct key out of two keys i.e. 0.00

So the probability that Nuri can win the car

= \frac{1}{3} *0.5+\frac{1}{3} *0.333+\frac{1}{3} *0\\= 0.278

6 0
3 years ago
What is the value of this expression 4x^3y^2 when x=-1 and y=2​
babunello [35]
The answer is -16. The picture is shown down below

6 0
3 years ago
From a standard deck of 52 cards, what is the probability of picking a Heart at random from the deck? A) 1 13 B) 1 26 C) 1 4 D)
monitta

Answer:

C 1/4

Step-by-step explanation:

13/52 = 1/4

6 0
4 years ago
The number of vehicles passing through a bank drive-up line during each 15-minute period was recorded. The results are shown bel
nexus9112 [7]

Answer:

The correct answer is: Option D: 26 vehicles

Step-by-step explanation:

Median is the middle value of a sorted data set.

The formula for median depends on the number of values in the dataset.

First of all we have to arrange the given data in order

So,

14 19 23 24 24 24 24 26 26 26 26 26 27 27 28 29 30 30 30 34

Counting the values in the dataset

n = 20

As the number of values is even, the formula for median will be

M = \frac{1}{2}(\frac{n}{2}th\ value+(\frac{n}{2}+1)th\ value)

Putting the values

M = \frac{1}{2}(\frac{20}{2}th\ value+(\frac{20}{2}+1)th\ value)\\M=\frac{1}{2}(10th\ value +[10+1]th\ value]\\M= \frac{1}{2}(10th\ value + 11th\ value)

The 10th value in dataset is 26 and 11th is also 26 so

M = \frac{1}{2}(26+26)\\M = \frac{1}{2}(52)\\M = 26

Hence,

The correct answer is: Option D: 26 vehicles

7 0
3 years ago
Expand then simplify: 12(2p-3)
avanturin [10]

Answer:

expanding ends in the simplest form: 24p-36

Step-by-step explanation:

7 0
4 years ago
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