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True [87]
3 years ago
5

Please answer asap!!

Mathematics
1 answer:
bixtya [17]3 years ago
4 0

Answer:

2.3328

Step-by-step explanation:

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A scientist has a sample of the radioactive isotope bismuth-212. The isotope decays exponentially as shown in the table. Time (s
luda_lava [24]

Answer:

f(x) = 30 • 0.989x

Step-by-step explanation:

Given the data :

10 26.8

20 23.9

30 21.3

40 19

50 16.9

60 15.1

Using technology, the exponential model equation obtained by plotting the data is :

y = 30.068(0.989)^x

Based on the general exponential formula :

y = ab^x

y = predicted value

Initial value, a = 30.068

Rate = b = 0.989

The most appropriate model equation from the options given is :

f(x) = 30 • 0.989^x

7 0
3 years ago
Select the measures of the angles of a triangle whose angles have measures in the ratio 6:8:10
morpeh [17]

Answer:

45, 60, 75

Step-by-step explanation:

The ratio of the angles are 6:8:10

Multiply by x to get the angle measures

6x, 8x,10x

We know the sum of the angles is 180 for a triangle

6x+8x+10x = 180

Combine like terms

24x = 180

Divide each side by 24

24x/24 = 180/24

x =7.5

Each angle is

6x = 6(7.5) =45

8x = 8(7.5) =60

10x = 10*7.5 = 75

4 0
3 years ago
If one face of a cube has an area of 6 square inches, what is the surgace area of the entire cube?
postnew [5]
36 is the answer, there are 6 faces of a cube multiply it by 6.
3 0
3 years ago
PLEASE HELP ME 100 POINTS
Ghella [55]

Answer:

b

Step-by-step explanation:

b b b b b b b   b bb b b b b bb b b bb b bb bb   bb b bb b b b b b b b b bb b b  b  b bb b  bb b b b b  bb b b b b b b  b bb  bb

5 0
3 years ago
Tickets for a county fair are $8 for an adult and $5 for a child. If you have a 15% discount card, how
FrozenT [24]

Answer:

$21.25

Step-by-step explanation:

The cost of the 2 adult tickets before the discount is $8 * 2 = $16

The cost of the 2 child tickets before the discount is $5 * 2 = $10

The total cost before the discount is $16 + $10 = $26

The total cost after the discount is

$26 * (1 - 0.15) =

$26 * 0.85 =

$21.25

4 0
2 years ago
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