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Nezavi [6.7K]
3 years ago
9

a box of 8 marbles has 4 red,2 green and 2 blue marbles. If you select one marble, what is the probability that it is a red or b

lue marble
Mathematics
1 answer:
Vinvika [58]3 years ago
8 0

your answer should be 0.80

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spin [16.1K]
Well, it would end up taking Sandy 3 minutes to run the race and Chris 2 and a half minutes. Meaning Sandy crossed the Dubinsky line 30 seconds after Chris.
7 0
3 years ago
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Tessa bought stock in a restaurant for $246.00 Her stock is now worth $297 66 What is the percentage increase of the value of Te
Ira Lisetskai [31]

The percentage increase of the value of Tessa's stock is 21%.

<h3>Percentage increase</h3>

Using this formula

Percentage increase=Current stock worth-Old stock worth/Old stock worth

Where:

Current stock worth=$297.66

Old stock worth=$246.00

Let plug in the formula

Percentage increase=$297.66 - $246.00 / 246.00 × 100

Percentage increase=$51.66/ 246.00 × 100

Percentage increase=21%

Inconclusion the percentage increase of the value of Tessa's stock is 21%.

Learn more about percentage increase  here:brainly.com/question/11360390

8 0
2 years ago
Find the missing side round to the nearest 10th please help
katrin [286]

Step-by-step explanation:

Number 3

cos∅ = adj/hyp

cos35° = 20/x

x = 20/cos35°

x = 20/0.8192

x = 24.4155

x ≈ 24.4 to the nearest tenth

Option C

Number 6

tan∅ = opp/adj

tan37° = 20/x

x = 20/tan37°

x = 20/0.7536

x = 26.5409

x ≈ 26.5 to the nearest tenth

Option B

8 0
3 years ago
Please help me on this I’m super stuck
erastova [34]

Answer:

<u>BC = 3.1666</u>

Step-by-step explanation:

To solve this you need to know that cosine∅ = adjacent/hypotenuse. We already know that hypotenuse = 5 and that ∅ = 70*. By substituting these in you will get cosine 70* = adjacent/5. Evaluate cosine 70* on the calculator and get 0.633... Multiply both sides by 5 and get adjacent is about equal to 3.1666. Because BC is the adjacent side of the triangle, this is the length of BC.

6 0
3 years ago
an assembly line worker at Rob's Bicycle factory adds a seat to a bicycle at the rate of 2 seats in 11 minutes. Write a proporti
LuckyWell [14K]
Rate = 2 seats/11 minutes = 2/11  seats/min

Therefore the time required for s seats is
(m \, min) =  \frac{s \, seats}{ \frac{2}{11} \,  \frac{seats}{min} } =  \frac{11s}{2} \, min
That is,
m = (11s)/2 min

When s = 16, obtain
m =  \frac{11(16)}{2} = 88 \, min

When s = 19, obtain
m =  \frac{11(19)}{2} = 104.5 \, min

Answers:
m = \frac{11s}{2}
When s = 16, m = 88 min
When s = 19,  m = 104.5 min


3 0
3 years ago
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