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pashok25 [27]
3 years ago
9

What is the value of k

Mathematics
1 answer:
monitta3 years ago
3 0

Answer:

k=60

Step-by-step explanation:

2k+11=131

2k=120

k=60

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The half-life of a radioactive kind of neodymium is 11 days. If you start with 2,616 grams of it, how much will be left after 22
Ket [755]

Answer:

654 grams

Step-by-step explanation:

When you set up this equation you want the number of grams you start with, 2616, and the factor by which it is decreasing, which is half, or 1/2. Because the half life is 11 days, but you want to find the amount left over after 22 days, you can make 22/11 as the exponent on the 1/2. The equation should look like this : 2616(1/2)^22/11. With these kinds of equations you always want to multiply the starting value by the factor of increase/decrease, and raise that factor to the time eclipsed divided by the set time(like the 11 day half life).

3 0
3 years ago
Write the following equation in the general form Ax + By + C = 0. <br> 2x + y = 6
katen-ka-za [31]
<span>2x + y = 6
2x + y - 6 = 0

answer is </span>2x + y - 6 = 0

hope that helps
5 0
3 years ago
A model of a house has been drawn on a coordinate grid. One corner of the house has
sp2606 [1]

Answer:

Point(9,1)

Step-by-step explanation:

Given

Point: (6,3)

Required

Translate 2 units down and 3 units left

Taking the translation 1 after other

When a function is translated down, only the y axis is affected;

2 units down implies that, 2 be subtracted from the y value.

The function becomes

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Point: (6, 1)

3 units right implies that, 3 be added tothe x value.

The function becomes

Point(3+6,1)

Point(9,1)

Hence;

Option D answers the question

7 0
3 years ago
How do you multiple fractions
Diano4ka-milaya [45]
Fractions they are easy REALLY!!

5 0
3 years ago
Read 2 more answers
Please answer this question!!
Aloiza [94]
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2(lw + lh + wh).

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8 0
3 years ago
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