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3 years ago

There are five marbles in a bag: four are blue, and one is red. What is the probability that blue Marble gets picked?

Mathematics

2 answers:

ElenaW [278]3 years ago

8 0

Probability of picking blue marble = $\frac{4}{5}$

Step-by-step explanation:

Given,

Number of blue marbles = 4

Number of red marble = 1

Total number of marbles = 5

To find the probability of picking blue marble

Formula

Probability of an event = (number of occurrence of an event) ÷ (total number of events)

So,

Probability of picking blue marble = $\frac{4}{5}$

astraxan [27]3 years ago

6 0

Answer:

4/5 or 80%

Step-by-step explanation:

4 out of 5 marbles are blue and 4/5 = .8

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Divide r+5/r2+5r-14 by r2+4r-21/r-2

soldi70 [24.7K]

Answer:

r+5 r^2+4r-21

-------------- / --------------------

r^2+5r-14 r-2

r+5 r-2

= -------------- x --------------------

r^2+5r-14 r^2+4r-21

r+5 r-2

= -------------- x --------------------

(r+7)(r-2) (r+7)(r-3)

r+5

= -----------------

(r+7)^2 (r-3)

hope it helps

Step-by-step explanation:

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3 years ago

You are choosing between two plans at a discount warehouse. Plan A offers an annual membership fee of $30 and you pay 90% of t

docker41 [41]

The cost for plan A and plan B at a discount warehouse is $57 and $153 respectively.

<h3>Equation</h3>

Plan A:

Membership fee = $30

Manufacturer's recommended list price = 90%

= 90% × 30

= 0.9 × 30

= $27

Total cost of plan A = $30 + $27

= $57

Plan B:

Membership fee = $90

Manufacturer's recommended list price = 70%

= 70% × 90

= 0.7 × 90

= $63

Total cost of plan B = $90 + $63

= $153

Therefore, the cost for plan A and plan B at a discount warehouse is $57 and $153 respectively.

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2 years ago

What is 2x22x2x2x2x2x2x2x2

Natali [406]

= 2^8 * 22
= 256*22
= 5632

4 0

3 years ago

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What is 4 1/2 divided by 7 1/3 and multiplied by 1 3/5?

Luba_88 [7]

I did the work and it says 0.3683492496 and more number but i believe its 0.3 without all those other numbers

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3 years ago

A square corner of 16 square centimeters is removed

oee [108]

Option C:

Area of the remaining paper = (3x – 4)(3x + 4) square centimeter

Solution:

Area of the square paper = $9x^2$ sq. cm

Area of the square corner removed = 16 sq. cm

Let us find the area of the remaining paper.

Area of the remaining paper = Area of the square paper – Area of the corner

Area of the remaining = $9x^2-16$

= $(3x)^2-(4)^2$

Using algebraic formula: $a^2-b^2=(a+b)(a-b)$

$=(3x-4)(3x+4)$

Area of the remaining paper = (3x – 4)(3x + 4) square centimeter

Hence (3x – 4)(3x + 4) represents area of the remaining paper in square centimeters.

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3 years ago

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