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oksano4ka [1.4K]
3 years ago
11

Circle the vertex of the angle.

Mathematics
1 answer:
Zina [86]3 years ago
5 0

Answer: B

Step-by-step explanation:

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What is the sum?
OleMash [197]

Answer:

x+5/x+3

Step-by-step explanation:

7 0
3 years ago
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To what place is 220.0 accurate?
natulia [17]
the answer of the question is tens
5 0
3 years ago
Explain your work please
Vlad1618 [11]
30 = 60% of x
x being our variable, we need to figure out what x equals. Use the formula I put in the attachment. Multiply 30 by 60, and then divide the product by 100. That will give you the answer :)

7 0
3 years ago
The half life of radium is 1690 years. if 80 grams are present now, how much will be present in 830 years
Pachacha [2.7K]

Answer:

A(t) = amount remaining in t years

      = A0ekt, where A0 is the initial amount and k is a constant to                     be determined.  

Since A(1690) = (1/2)A0 and A0 = 80,

                we have 40 = 80e1690k

                1/2 = e1690k

                ln(1/2) = 1690k

                k = -0.0004

So, A(t) = 80e-0.0004t

Therefore, A(430) = 80e-0.0004(430)

                           = 80e-0.172

                           ≈ 67.4 g

Step-by-step explanation:

5 0
1 year ago
Find the value of n in 7 times 38 plus 3 times 45 minus 56
Alex787 [66]
7 * 38 + 3*45 - 56 
use order of operations 
(7*38) + (3*45) - 56

266 + 135 - 56

=345
3 0
3 years ago
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