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3 years ago

1 red marble, 3 green, 4 blue. What is the probability of picking a yellow marble?

Mathematics

1 answer:

Alexandra [31]3 years ago

7 0

Answer:

zero probability, which means impossible

Step-by-step explanation:

there are no yellow marbles to select from

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A jewellery shop sells 240 necklaces in a month 180 of the necklaces were sold via the shop website work out the simplest form

Dovator [93]

Answer:

3 : 1

Step-by-step explanation:

A jewellery shop sells 240 necklaces in a month 180 of the necklaces were sold via the shop website work out the simplest form. The rest were sold in a High Street shop.

Work out the ratio of online sales to shop sales.

Give your answer in its simplest form.

Necklace sold in the shop = 240 - 180 = 60

180 : 60

to convert to simplest form, divide both numbers by 60

3 : 1

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2 years ago

What’s the least common multiple of x^2-2x-15 and x^2+2x-3?

Ghella [55]

Answer:

$\large\boxed{LCM(x^2-2x-15,\ x^2+2x-3)=(x+3)(x-5)(x-1)}\\\boxed{=x^3-3x^2-13x+15}$

Step-by-step explanation:

$x^2-2x-15=x^2+3x-5x-15=x(x+3)-5(x+3)=(x+3)(x-5)\\\\\\x^2+2x-3=x^2+3x-1x-3=x(x+3)-1(x+3)=(x+3)(x-1)\\\\LCM(x^2-2x-15,\ x^2+2x-3)=(x+3)(x-5)(x-1)\\\\=(x^2-2x-15)(x-1)\qquad\text{use FOIL}\\\\=(x^2)(x)+(x^2)(-1)+(-2x)(x)+(-2x)(-1)+(-15)(x)+(-15)(-1)\\\\=x^3-x^2-2x^2+2x-15x+15\qquad\text{combine like terms}\\\\=x^3+(-x^2-2x^2)+(2x-15x)+15\\\\=x^3-3x^2-13x+15$

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3 years ago

Which point represents a solution to the system? <br> (6,1)<br> (8,1)<br> (6,2)<br> (6,-2)

pickupchik [31]

Answer:

Step-by-step explanation:

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3 years ago

Nina owns a condominium where she paid $2,340 in maintenance fees this year. If her property taxes are 18% off this amount, how

Rufina [12.5K]

2340x0.18= 421.20

She paid $421.20 in property taxes

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2 years ago

A truck is used to transport gravel. The box on the truck is a rectangular prism 11 ft long, 7 ft wide and 4 ft high. The box do

chubhunter [2.5K]

Answer:

308 cubic feet

Step-by-step explanation:

The box on the truck has dimensions 11 ft by 7 ft by 4 ft.

The volume of the box is:

V = L * W * H

V = 11 * 7 * 4

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3 years ago

1 red marble, 3 green, 4 blue. What is the probability of picking a yellow marble?​

1 red marble, 3 green, 4 blue. What is the probability of picking a yellow marble?