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Irina-Kira [14]
3 years ago
5

Element X decays radioactively with a half life of 15 minutes. If there are 600 grams

Mathematics
1 answer:
alexdok [17]3 years ago
6 0

Answer: t = 16.49304 ≈ 16.5 minutes

Step-by-step explanation: I pressed see solution

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Solve pls brainliest
Goshia [24]

Hey there!

39 = - u / 6

MULTIPLY 6 to BOTH SIDES

39(9) = (-u / 6)(6)

CANCEL out: the RIGHT side

KEEP: the LEFT side because it helps solve for the u-value

NEW EQUATION: -u = 234

DIVIDE -1 to BOTH SIDES

-1u / -1 = 234 / -1

CANCEL out: -1 / -1 because it gives you 1

KEEP: 234 / -1 because it gives you the result of the u-value

NEW EQUATION: u = 234 / -1

SIMPLIFY IT!

u = -234

Therefore, your answer is: [u = -234]

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

8 0
3 years ago
Read 2 more answers
Elizabeth swims 50 feet in ten seconds. Jesse swims 110 feet in 20 seconds.
erica [24]

Answer: Jesse

Step-by-step explanation:

Elizabeth - 50f/10s

Jesse - 55f/10s

Reagan - 53.3333333/10s

Jesse is the fastest

5 0
3 years ago
Read 2 more answers
In triangle ABC, a = 5.3 cm, b = 4.8 cm, and c = 9.2 cm.
suter [353]

Answer:

a= 25.69, b=23.12, c=131.119

Step-by-step explanation:

cosa=\frac{B^{2} +C^{2} -A^{2} }{2BC} \\        =\frac{79.59}{88.32} \\       a = 25.69

cos(b)=\frac{A^{2} +C^{2} -B^{2} }{2AC} \\        =\frac{89.69}{97.52}\\      b=23.12\\c=180-23.12-25.69\\   = 131.119

8 0
3 years ago
Best & correct answer gets brainliest.
Katarina [22]
Option C is needed because the reason for proving this pair of congruent triangles is SAS, (an angle between 2 equal sides)
4 0
3 years ago
Is the expression 5 + 3x 2always equal to the expression 4x? Explain your answer.
Anna71 [15]
5+3x=4x
only when
x=5
The two expression are only equal at x=5
8 0
3 years ago
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