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maw [93]
3 years ago
15

The probability that a pupil in class has a calculator is 0.87 what is the probability that a pupil does not have a calculator?

Mathematics
1 answer:
lidiya [134]3 years ago
8 0

Answer:

0.87 1.0

0.13

Step-by-step explanation:

0.13 dont have a calculator

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if the first and third of three consecutive odd integers are added, the result is 63 less than five times the second integer. fi
ollegr [7]

The value of third consecutive odd is 23

• In Mathematics, algebra is a branch which only deals with symbols and the rule for  the manipulation of these symbols. Algebra is divided into different sub branches such as advanced algebra, linear algebra, elementary algebra, abstract algebra etc.

• The basics of algebra contains numbers, variables, constants, expressions and equations. The basic four operations of algebra are addition, subtraction, multiplication, division.

Let the first consecutive odd integer be x

Second consecutive integer = x+2

Third consecutive integer = x+4

We are given that

First + third = 5(Second) – 63

x + x + 4 = 5 (x+2) -63

2x + 4 = 5x +10 -63

-3x = -57

3x = 57

x = 19

First Consecutive odd = 19

Second Consecutive odd = 21

Third Consecutive odd = 23

Learn more about algebra here

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5 0
2 years ago
I need help asap please more than one answer
pashok25 [27]

Answer:

A) 8(x+8); 8*x+8*8

B)15y+2

I hope this helps!

3 0
3 years ago
Andrea is told that the means of two groups in a study were statistically significant. She knows the means and standard deviatio
salantis [7]

Answer:

Cohen's D

Step-by-step explanation:

Cohen's D is a statistic that measures effect size. It shows standardised difference between 2 means.

Effect size is defined as how large the effect of a something is or its magnitude.

Cohen's D works effectively when the sample is >50 (that is for large samples). However a correction factor can be used to make results from small samples more accurate

The formular for Cohen's D is:

D = (mean1 - mean2) ÷ (√({standard deviation1}^2 + {standard deviation 2}^2)/2)

This is the most appropriate method in the given scenario

5 0
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Please help find the greatest common factor for these two problems
vekshin1

A greatest common factor is the largest number that goes into two or more numbers (in this case two). To find the GCF of two numbers, we have to find the prime factorization (how to express a number as a product of prime numbers) and then see which numbers are common in both of the prime factorizations.

13. The prime factorization of 8 is 2 * 2 * 2. The prime factorization of 26 is 2 * 13. Looking at the prime factorizations, we can see that both of them have 2. That means that the GCF is 1 * 2 which is 2.

12. The prime factorization of 105 is 3 * 5 * 7. The prime factorization of -30 is -5 * 6. We see that the number shared 5. That means that the GCF is 5 * 1 or 5.

5 0
3 years ago
Marion read 616 pages in 14 days. If she read the same number of pages each day, how many pages did she read each day?
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Answer:

616/14=44 pages

Step-by-step explanation:

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