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2 years ago

Which number produced a rational number when added to 1/5

Mathematics

1 answer:

mrs_skeptik [129]2 years ago

4 0

The number that produced a rational number when added to 1/5 is D. -2/3.

<h3>What is a rational number?</h3>

A rational number is a number that can be written as a ratio (or fraction) of two integers.

For example, when 1/5 is added to -2/3, it produces a rational number, -7/15, that remains as a fractional value.

Thus, the number that produced a rational number when added to 1/5 is D. -2/3.

Learn more about rational numbers at brainly.com/question/12088221

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A square tabletop has an area of

tiny-mole [99]

s = 3x - 15 is the required expression for perimeter of table top

Perimeter of square tabletop is 240 cm

Solution:

A square tabletop has an area given as:

$(9x^2 - 90x+225) cm^2$

The dimensions of the tabletop have the form cx - di ,where cand d are whole numbers

To find perimeter of tabletop when x = 25 centimeters

Let us first find the length of each side of square

Given area is:

$area = (9x^2 - 90x+225)$

We know that,

$area = (side)^2 = s^2$

Therefore,

$s^2 = (9x^2 - 90x+225)\\\\s^2 = (3x - 15)(3x - 15)\\\\s^2 = (3x - 15)^2$

Taking square root on both sides,

s = 3x - 15

The above expression is the required expression for perimeter of table top

To find perimeter when x = 25 centimeter

The perimeter of square is given as:

$perimeter = 4s$

perimeter = 4(3x - 15)

Substitute x = 25

perimeter = 4(3(25) - 15)

perimeter = 4(60) = 240

Therefore perimeter of square tabletop is 240 cm

4 0

3 years ago

How do I get the result of x + 3y = -3

kakasveta [241]

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3 years ago

Elisa made 0.44 of the free throws dhe attempted what is the amount written as a fraction in simplest form

Vinvika [58]

Answer:

11/25

Step-by-step explanation:

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3 years ago

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According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are re

mr Goodwill [35]

Answer:

See explanation.

Step-by-step explanation:

We are looking at a geometric distribution.

The probability of selecting a brown peanut is .12 = p

The probability of not selecting a brown peanut is .88 = q

The probability mass function is p(y) = (.88)^(y-1) * (.12)

a) p(7) = (.88)^6 * .12 = .0557

b) p(7 <= y <= 8) = p(7) + p(8)

= .0557 + (.88)^7 * .12 = .1048

c) p(y <= 7) = p(0) + p(1) + ... + p(7)

= .12 + (.88)^1 * .12 + (.88)^2 * .12 + ... + (.88)^6 * .12 = .4713

d) The expect value is 1/p. So, 1/(.12) = 8.33 M&M's

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4 years ago

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0.8% as a decimal and fraction.

Elodia [21]

Step 1: 0.8 = 8⁄10
Step 2: Simplify 8⁄10 = 4⁄5

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3 years ago