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4 years ago

1. Which fractions are equivalent to 25/45. Please give two examples.

1 answer:

3 0

1) fractions equivalent to 25/45

Any fraction obtaining by multiplying both numerator and denominator by the same quantity will result in an equivalent fraction.

Examples:

- divide both numerator and denominator by 5 => 5/9 is equivalent

- multiply both numerator and denominator by 2 => 50 / 90 is equivalent

- multiply both numerator and denominator by 10 => 250 / 450 is equivalent.

2)
Spinning two fours on a spinner divided into four numbered sections: these are independent events, becasue one result does not influence the other.

Selecting two kings from a standard deck of cards by choosing a card at random, placing it in your pocket, then choosing the second card: they are not independent, because if the first card is a king the probability of the second card will be different than if the first card is not a king.

Selecting two green marbles by choosing one from a bag at random, giving the first to a friend, then choosing another: they are not independent because whether the first two marbles are green or not, make the probabilities for the second event different.

Selecting the names of two siblings by choosing slips of paper from a hat at random, pinning the selected slip on a bulletin board, and then selecting another.: they are not independent, by similar reason explainded in the two previos options.

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PLZZZZ HELP ASAP... Donald spends a total of $17.43 on peanuts that cost $2.49 per pound. How many pounds of peanuts does he buy

Finger [1]

Answer:

17.43 = 2.49x equation

answer: 7

Step-by-step explanation:

17.43 = 2.49x

First divide 2.49 by 17.43

17.43/2.49

which will give you the result of

7 0

3 years ago

Read 2 more answers

Using the box-and-whisker plot shown, find the quartile values Q1 and Q3

astra-53 [7]

Answer:

see explanation

Step-by-step explanation:

The lower quartile $Q_{1}$ is positioned at the left side of the box, that is

$Q_{1}$ = - 4

The upper quartile $Q_{3}$ is positioned at the right side of the box

$Q_{3}$ = 6

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4 years ago

Find the Area. Simplify your answer.

Vaselesa [24]

Answer:

Area = $9x^2$ square units

Step-by-step explanation:

Key skills needed: Area of a parallelogram

1) This shape is a parallelogram, and the way to find the area of a parallelogram is:

$A = bh$

A = area

b = base (the side at the bottom

h = the height ( the length that runs from one side to another and makes a right angle)

2) The base (b) would be 3x. The height (h) would also be 3x

3) This means A = $3x(3x)$

3 times 3 is 9 --> and x times x is $x^2$

Therefore the area is --> $9x^2$

Hope you understood and have a nice day!! :D

5 0

3 years ago

A magazine provided results from a poll of 2000 adults who were asked to identify their favorite pie. Among the 2000 respondent

ladessa [460]

Answer:

95%

Step-by-step explanation:

For a given sample data, the width of the confidence interval would vary directly with the confidence level i.e. more the confidence level, wider will be the confidence interval.

This is because the critical value associated with the confidence level(e.g z value) becomes larger as the confidence level is increased which results in an increased interval.

The confidence interval for a population proportion is given by the formula:

$p \pm z\sqrt{\frac{pq}{n} }$

So, for a fixed value of p,q and n, the larger the value of z the wider will be the confidence interval.

Hence 95% confidence interval will be wider than 80% confidence interval.

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4 years ago

The sides of ∆ABC inscribed in a circle are equidistant from the center. Tricia says that ∆ABC must be equilateral. Which explai

lisabon 2012 [21]

Answer:

Tricia is correct because the sides of the triangle are congruent since they are equidistant from the center of the circle.

Step-by-step explanation:

Given that the sides of ΔABC inscribed in a circle are equidistant from the center. This implies the triangle is drawn within the circumference of the circle with a center.

Bisecting the three sides of the triangle shows that the three bisectors intersect at a point which is the center of the circle, and the lines are equidistant to this point. This proves that the length of the sides of the triangle are equal, so that the triangle is an equilateral triangle. Therefore, Tricia's statement is correct.

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3 years ago