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aleksandr82 [10.1K]
3 years ago
5

3/7 divided by what I said more than 1

Mathematics
2 answers:
baherus [9]3 years ago
8 0

Answer:

6/7

Step-by-step explanation:

What is 3/7 divided by 1/2?

It can sometimes be difficult to divide fractions, such as 3/7 divided by 1/2.

Natalka [10]3 years ago
5 0
Answer

6/7

Explanation
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raketka [301]

The given equations are incomprehensible, I'm afraid...

You're given that osmium-183 has a half-life of 12 hours, so for some initial mass <em>M</em>₀, the mass after 12 hours is half that:

1/2 <em>M</em>₀ = <em>M</em>₀ exp(12<em>k</em>)

for some decay constant <em>k</em>. Solve for this <em>k</em> :

1/2 = exp(12<em>k</em>)

ln(1/2) = 12<em>k</em>

<em>k</em> = 1/12 ln(1/2) = - ln(2)/12

Now for some starting mass <em>M</em>₀, the mass <em>M</em> remaining after time <em>t</em> is given by

<em>M</em> = <em>M</em>₀ exp(<em>kt </em>)

So if <em>M</em>₀ = 590 g and <em>t</em> = 36 h, plugging these into the equation with the previously determined value of <em>k</em> gives

<em>M</em> = 590 exp(36<em>k</em>) = 73.75

so 73.75 ≈ 74 g of Os-183 are left.

Alternatively, notice that the given time period of 36 hours is simply 3 times the half-life of 12 hours, so 1/2³ = 1/8 of the starting amount of Os-183 is left:

590/8 = 73.75 ≈ 74

6 0
3 years ago
Given that a:b=8:5 b:c=3:4 find the ratio a:b:c
olga55 [171]
A:b = 8:5 b:c = 3:4
since both sides have b. make b the same. multiply the left by the right side b value of 3 and multiply the right  by the left side b value of 5.
3(a:b)  and 5(b:c)
3 (8:5) and 5(3:4)
24:15          15:20
now that both sides have the same b value
a:b:c = 24:15:20

4 0
3 years ago
What are the like terms in the expression 7y + 4 +4x + 7​
lorasvet [3.4K]

Answer:

4, 7

Step-by-step explanation:

7y + 4 +4x + 7​

The only like terms are the constants 4 and 7

7y is like yogurt and 4x is like xrays, we don't  mix them

7 0
3 years ago
Read 2 more answers
It takes 12 buckets of water to fill a fish tank. If chloe uses scoops equal to 1/4 of a bucket, how many scoops are needed to f
Bas_tet [7]

Answer: 48

Step-by-step explanation:

From the question, we are informed that it takes 12 buckets of water to fill a fish tank. We are further told that Chloe uses scoops which are equal to 1/4 of a bucket.

The number of scoops that are needed to fill the whole tank would be:

= 12 ÷ 1/4

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8 0
2 years ago
What is the slope of the line graphed on the coordinate plane?
erica [24]

Answer:

m=\frac{1}{4}

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (-6, -1)

Point (6, 2)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{2+1}{6+6}
  2. Add:                              m=\frac{3}{12}
  3. Simplify:                        m=\frac{1}{4}
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3 years ago
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