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fredd [130]
2 years ago
13

You have 30,016 grams of radioactive kind of

Mathematics
1 answer:
Ostrovityanka [42]2 years ago
4 0

Answer:

15,008 grams

Step-by-step explanation:

You have 30,016 grams of radioactive kind of rubidium. How much will be left after 54 minutes if its half-life is 18 minutes? 15,008 grams.

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ACD is a triangle and B is a point on AC. AB = 8cm and BC is 6cm. Angle BCD = 48° and angle BDC = 50°. (a) Find the length of BD
FromTheMoon [43]

Answer:

  • 5.8206 cm
  • 10.528 cm
  • 23.056 cm^2

Step-by-step explanation:

(a) The Law of Sines can be used to find BD.

  BD/sin(48°) = BD/sin(50°)

  BD = (6 cm)(sin(48°)/sin(60°)) ≈ 5.82064 cm

__

(b) We can use the Law of Cosines to find AD.

  AD^2 = AB^2 +BD^2 -2·AB·BD·cos(98°) . . . . . angle ABD = 48°+50°

  AD^2 ≈ 110.841

  AD ≈ √110.841 ≈ 10.5281 . . . cm

__

(c) The area of ∆ABD can be found using the formula ...

  A = ab·sin(θ)/2 . . . . . where a=AB, b=BD, θ = 98°

  A = (8 cm)(5.82064 cm)sin(98°)/2 ≈ 23.0560 cm^2

_____

Angle ABD is the external angle of ∆BCD that is the sum of the remote interior angles BCD and BDC. Hence ∠ABD = 48° +50° = 98°.

5 0
3 years ago
There are 24 students in the class. They had the choice to buy supplies from two different stores, Store A and B. Each of them b
NeX [460]

Answer:

Step-by-step explanation:

There's 24 students so I would do 5 × 24 which equals 120 so 420 - 120 is 300. Then 2 × 24 is 48. Now 300-48 is 252. They would have $252 left.

3 0
2 years ago
Whats a common facter of 32 and 36
KengaRu [80]
Common Factors of 32 and 36 
factors of 32 = 1, 2, 4, 8, 16 and 32
factors of 36 = 1, 2, 3, 4, 6, 9, 18, 36
<span>So the common </span>factors of 32 and 36 are 1, 2 and 4.
The greatest common factor is 4
4 0
3 years ago
Read 2 more answers
7 times a number is decreased by 8, the answer is the same as 3 times the number
lesya [120]

2 is the answer you're looking for.

2*7=14

14-8=6

2*3=6

3 0
3 years ago
At Quality Tees, shirts sell at a
aleksklad [387]
The answer is 6 shirts


12.5x+8=83
12.5x=83-8
12.5x=75
x=75/12.5
x=6
8 0
3 years ago
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