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dolphi86 [110]
3 years ago
6

Find the half life of an element which decays by 3.409% each day

Mathematics
1 answer:
vodomira [7]3 years ago
7 0

Answer:

The half-life of a radioactive isotope is 140  How many days would it take for the decay rate of a sample of this isotope to fall to one-fourth of its initial value?

Step-by-step explanation:

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At marco's school,5/8 of the students are in the band.What percent of the student are in the band?
Neko [114]

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62.5%

Step-by-step explanation:

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3 years ago
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What is the graph of the function <br> f(x)=−⌊x⌋
kupik [55]

Answer:

Step-by-step explanation:

The equation being shown in the question is the absolute value of x. Absolute values when graphed show up as a V-shaped graph pointing upwards. This is because whatever value is passed as an input will output a positive, regardless of whether the input is positive or negative. Meaning that both 4 and -4 will output 4. That is why the graph is a V-shaped because the outputs repeat for both positive and negative inputs. In this case since the negative is outside the absolute value brackets the positive value given from the absolute value of the input will be turned into a negative. So this will cause the V-shape graph to be reflected across the x-axis. As seen in the attached picture below.

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2 years ago
Five of every six gifts were wrapped in blue paper. If there are 25 gifts wrapped in blue paper, how many gifts are there altoge
melamori03 [73]

Answer:

There are 30 gifts altogether.

3 0
3 years ago
what is the surface area of a rectangular prisim with a base length of 9 yd, base width of 7 yd,and a height of 4 yd?
krek1111 [17]

Answer:

254 yds²

Step-by-step explanation:

There are 6 faces of the prism we need to calculate the area of for a rectangular prism.

The base and top of the prism measure 9x7 yards each, so there are two faces with an area of 63 yds²                 (9 x 7 = 63)

The sides of the prism measure 4x7 yards each, so there are two faces with an area of 28 yds²    (4 x 7 = 28)

The front and back face of the prism measure 9x4 yards each, so there are two faces with an area of 36 yds²     (9 x 4 = 36)

The total surface area is

2(63) + 2(28) + 2(36) = 254 yds²

3 0
3 years ago
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URGENT!!!!!!!!!!!!!!!!
Kruka [31]

Answer:

0.5 over 1

Step-by-step explanation:

look at how much it goes down

8 0
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