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solong [7]
2 years ago
8

Plzz help!! Due today!!

Mathematics
1 answer:
Citrus2011 [14]2 years ago
3 0

Answer:

2nd, 3rd and 6th are the solutions

Step-by-step explanation:

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Find the value of X in the simplest radical form
Galina-37 [17]

Answer:. 7


Step-by-step explanation:


4 0
3 years ago
Element X is a radioactive isotope such that every 9 years, its mass decreases by half. Given that the initial mass of a sample
4vir4ik [10]

Answer:

2.9 years

Step-by-step explanation:

Given that :

Half-life t1/2 = 9 years

Initial mass = I = 70 grams

A = final mass = 56 grams

t = time taken to reach final amount

Using the exponential half life relation :

A = I(0.5)^t/t1/2

56 = 70(0.5)^t/9

56/70 = 0.5^t/9

0.8 = 0.5^t/9

Log 0.8 = log 0.5^t/9

−0.096910 = −0.301029 * t/9

t/9 = 0.096910 / 0.301029

t/9 = 0.3219291

t = 0.3219291 * 9

t = 2.8973619

t = 2.9 years

5 0
2 years ago
Where are white blue and red boat in the Marina three fourths of the boats in the Marina are white for seventh of the remaining
xeze [42]

Answer:

28

Step-by-step explanation:

Here is the complete question used in answering this question :

Three-fourths of the boats in the marina are white. 4/7 of the remaining boats are blue , and the rest are red . If there are 9red boats, how many boats are in the marina?

We first have to determine the fraction of the boats that are red

1 - (\frac{3}{4} + \frac{4}{7})

1 - \frac{21 + 16}{28}

1 - \frac{37}{28}

1 - 1\frac{9}{28}

= 9/28

so, 9/28 of the boats are red

let b represent the total number of boats

9/28 x b = 9

to find b, divide both sides of the equation by 28/9

b = 28

5 0
2 years ago
A bag contains 5 red, 4 green, and 3 blue marbles.
Mila [183]

Answer:

1/12

Step-by-step explanation:

I just did this question and it was right :)

Thought I would help since I couldn't find the answer

8 0
3 years ago
In the equation 5b = 45, b = 10 <br><br> True or False
professor190 [17]
The answer is falseeeeeeeee
8 0
3 years ago
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