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nasty-shy [4]
2 years ago
6

What is cramers rule.

Mathematics
1 answer:
Jobisdone [24]2 years ago
6 0

Cramer's Rule is a method that uses determinants to solve systems of equations that have the same number of equations as variables

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You ask 200 randomly chosen students to name their favorite ice cream flavor. There are 1800 students in the school. Based on th
Kaylis [27]

Answer:

351

Step-by-step explanation:

Complete question :

Vanilla= 36

Chocolate=21

Strawberry=24

Chocolate Chip=39

SOLUTION:

39 chocolate chip to 200 students = x chocolate chip to 1800 students

39/200 = x / 1800

Solving for 'x'

(200)(x) = (39)(1800)

200x = 70200

x = 70200/200

x = 351

OR

39 out of 200 picked chocolate chip

therefore, 39/200 = 0.195 = 19.5%  ( 32.5% chose chocolate chip)

19.5% of 1800 = 0.195(1800) = 351 students

6 0
3 years ago
What is your estimate for the number of airline flights in a year?
Firdavs [7]
The answer is between 45,000,000-65,000,000
8 0
3 years ago
A department store sells a pair of shoes with a 80% markup. If the store bought the pair of shoes for $55.25. Round the price to
AleksandrR [38]

Answer:

$31.00

Step-by-step explanation:

that is the procedure above

6 0
3 years ago
Suppose commute times in a large city are normally distributed and that 63.70% of commuters in this city take more than 22 minut
USPshnik [31]

Answer:

The mean is 24.205

Step-by-step explanation:

Firstly, we need to get the z-score

From the question, the probability we have is the probability that commuters take more than 22 minutes to commute one-way

So the probability we had was;

P( x > 22)

So we need the z-score corresponding to 63.70% or simply 0.637

We can use the standard normal distribution table to get this

Mathematically, from the standard normal distribution table this is -0.35

z-score = (x- mean)/SD

-0.35 = (22-mean)/6.3

22-mean = -2.205

mean = 22 + 2.205 = 24.205

6 0
2 years ago
In your office 1/8 of 288 employees work part-time how many are part-time
bearhunter [10]
That would be 1/8 times 288, so the answer would be 36 part time workers. 
5 0
3 years ago
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