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forsale [732]
3 years ago
14

What is 1/3 + 3/91/3 + 3/9=?

Mathematics
2 answers:
Alecsey [184]3 years ago
5 0
1/3 + 3/9 =
Answer: 2/3
atroni [7]3 years ago
4 0

Answer:2/3

Step-by-step explanation:

3/9=1/3

1/3+1/3=2/3

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I think I got the right answer, but please tell me if I didn’t! THX!
makkiz [27]

Yes, because 1+1+1=3 and those are the whole numbers and than 1/2+1/4 + 1/4=100 which is 4/4! And a whole!

7 0
4 years ago
Evaluate the expression -5-3+1
hram777 [196]

Answer:

The answer is -7

Step-by-step explanation:

-5 - 3 = -8

-8 + 1 = -7

Hope I helped :)

3 0
3 years ago
Read 2 more answers
At the beginning of an experiment, a scientist has 300 grams of radioactive goo. After 150 minutes, her sample has decayed to 37
monitta

Answer:

Half-life of the goo is 49.5 minutes

G(t)= 300e^{-0.014t}

191.7 grams of goo will remain after 32 minutes

Step-by-step explanation:

Let M_0\,,\,M_f denotes initial and final mass.

M_0=300\,\,grams\,,\,M_f=37.5\,\,grams

According to exponential decay,

\ln \left ( \frac{M_f}{M_0} \right )=-kt

Here, t denotes time and k denotes decay constant.

\ln \left ( \frac{M_f}{M_0} \right )=-kt\\\ln \left ( \frac{37.5}{300} \right )=-k(150)\\-2.079=-k(150)\\k=\frac{2.079}{150}=0.014

So, half-life of the goo in minutes is calculated as follows:

\ln \left ( \frac{50}{100} \right )=-kt\\\ln \left ( \frac{50}{100} \right )=-(0.014)t\\t=\frac{-0.693}{-0.014}=49.5\,\,minutes

Half-life of the goo is 49.5 minutes

\ln \left ( \frac{M_f}{M_0} \right )=-kt\Rightarrow M_f=M_0e^{-kt}

So,

G(t)= M_f=M_0e^{-kt}

Put M_0=300\,\,grams\,,\,k=0.014

G(t)= 300e^{-0.014t}

Put t = 32 minutes

G(32)= 300e^{-0.014(32)}=300e^{-0.448}=191.7\,\,grams

7 0
3 years ago
What is the measure of the angle formed by the minute hand and hour hand of a clock in each case?
Morgarella [4.7K]
Answer: A
HOPE THIS HELPS
4 0
3 years ago
Read 2 more answers
Which Transformation is a isometry?
Eddi Din [679]

Answer:

C, the two rounded rectangles

Step-by-step explanation:

Isometry can be divided into two words: iso = same and metry = measure

So, isometry means "same measure".

In this case, that means the transformation didn't change the measures of the object.

In A and B, you can see the figure has been transformed, while in C, it's the same shape and size, just a different color.

6 0
4 years ago
Read 2 more answers
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