Enrique says is a rational number. Which of the following best describes if Enrique is correct?

2 answers:

8 0

Yes he is correct. Repeating decimals are rational numbers because they can be written as fractions. The number is actually equivalent to 4/10

olasank [31]2 years ago

4 0

If a number is rational it means, it can be written in the form of $\frac{p}{q}$ , where q≠0 and p and q can be any integers.

There are following properties possessed by Rational numbers

1. Decimal representation of Rational numbers are either terminating or non terminating repeating i.e if the denominator is of the form $2^m or 5^n or (2^m \times 5^n)$ where m and n are any natural number.

2. Addition ,Subtraction ,Multiplication and Division of two rationals is always Rational.

3. The sum or difference of rational and irrational is always irrational.

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Find the product of both functions: y= 2x - 1 y = -x + 2

nata0808 [166]

Answer:

0.375

Step-by-step explanation:

1.y=2x-1

2.y=-x+2

using substitution method

1.y=2x-1

y+1=2x

the other equation where there is an x will be replaced by a the first equation

2.y=-(y+1)+2

y=-y-1+2

y=-y+1

y+y=1

2y=1

2y/2=1/2

y=0.5

the value of y is 0.5 the value of x would be found by taking the y and replacing it with 0.5 in any of questions one and two.

1.y(0.5)=2x-1

0.5=2x-1

0.5+1=2x

1.5=2x

1.5/2=2x/2

0.75=x

the value of y is 0.5 and x is 0.75

0.5*0.75=0.375

=0.375

5 0

3 years ago

One hundred rats with mothers that were exposed to high levels of tobacco smoke during pregnancy were put through a simple maze.

Paul [167]

Answer:

The 90% confidence interval for pis (0.7342, 0.8658).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.