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Nikolay [14]
2 years ago
5

What is the square root of 7 i just give the answer to you square root of 7 is 2.64575131

Mathematics
1 answer:
Vikentia [17]2 years ago
3 0

Answer:

2.646

Step-by-step explanation:

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The number 18 is what % of 56?
zalisa [80]
X
--- × 56 =18
100

56x = 18×100

× = 18 × 100
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56

X = 32.14%
7 0
2 years ago
Please Solve This For Me If You Can y(2.5+7)+y-2 ​
Law Incorporation [45]

Answer: 10.5y-2

Hope this helps!

4 0
2 years ago
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the price of an antibiotic in one drugstore is $19.50 and $16.25 in another write the ratio of the prices
damaskus [11]
Remember that ratios are essentially fractions without fraction bars...

If they asked to find the ration of 19.50 to 16.25 you would set them up like so....

19.50 : 16.25      -----> since fractions can be simplified so can ratios in the same manner

the ratio you would end up with is <u>6 : 5</u><u />   

Ratios can be easily remembered and solved if you understand the link between them and fractions. 

I hope this helps! :D

<u>Please vote me for Brainliest if there is a second answer! </u>
8 0
3 years ago
Norma bought 1 3/4 yards of cotton fabric and 3 3/8 yards of fleece fabric.
aalyn [17]
1 3/4 + 3 3/8 
get a common denominator by multiplying 1 3/4 by 2 to get a denominator of 8
1 3/4 becomes 1 6/8
1 6/8 + 3 3/8 = 5 1/8 yards
so the answer is 
C. 5 1 / 8 Yards
4 0
3 years ago
Read 2 more answers
If you start with 85 milligrams of Chromium 51, used to track red blood cells, which
zysi [14]

About 92 days are taken for 90 % of the material to <em>decay</em>.

The mass of radioisotopes (m), measured in milligrams, decreases exponentially in time (t), measured in days. The model that represents such decrease is described below:

m(t) = m_{o}\cdot e^{-\frac{t}{\tau} } (1)

Where:

  • m_{o} - Initial mass, in milligrams.
  • m(t) - Current mass, in milligrams.
  • \tau - Time constant, in days.

In addition, the time constant is defined in terms of half-life (t_{1/2}), in days:

\tau = \frac{t_{1/2}}{\ln 2} (2)

If we know that m_{o} = 85\,mg, t_{1/2} = 27.7\,d and m(t) = 8.5\,mg, then the time required for decaying is:

\tau = \frac{t_{1/2}}{\ln 2}

\tau = \frac{27.7\,d}{\ln 2}

\tau \approx 39.963\,d

t = -\tau \cdot \ln \frac{m(t)}{m_{o}}

t = -(39.963\,d)\cdot \ln \frac{8.5\,mg}{85\,mg}

t\approx 92.018\,d

About 92 days are taken for 90 % of the material to <em>decay</em>.

We kindly invite to check this question on half-life: brainly.com/question/24710827

8 0
2 years ago
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