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Leto [7]
2 years ago
12

It’s 28 : 12

Mathematics
1 answer:
Tamiku [17]2 years ago
3 0

Use solving math

Link:

WWW.SOLVINGMATH.COM

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An element with a mass of 630 grams decays by 30% per minute. To the nearest minute, how long will it be untill there are 30 gra
nataly862011 [7]

Answer:

It should take somewhere between 8 to 9 minutes to decay until there are 30 grams remaining.

6 0
3 years ago
A pair of boots is 30dollars more than a pair of sandals. A pair of sandals cost s dollars each. Emily purchased 2 pairs of boot
babunello [35]

Answer: The expression representing the amount of money spent is 5x+60 by Emily.

Step-by-step explanation:

Since we have given that

Let the cost price of per pair of sandals be 's'

Let the cost price of per pair of  boots be 's+30'.

Number of pairs of boots = 2

Number of pairs of sandals = 3

Total cost would be

2(s+30)+3s\\\\=2s+60+3s\\\\=5s+60

Hence, the expression representing the amount of money spent is 5x+60 by Emily.

5 0
3 years ago
heyyy i did question A but im stuck on question b so if you could help i would really appreciate it it is an emergency <3
stellarik [79]

Answer:

86 cm²

Step-by-step explanation:

Ok, so since 4 circles fit in the square, each circle's diameter must be 10.

Which means the radius of each circle is 5 because 10 ÷ 2 = 5.

Now we can solve for area.

A = πr²

A = 3.14 x 5²

A = 3.14 x 25

A = 78.5 cm²

78.5 cm² is the area of one circle so we multiply that by 4.

78.5 x 4 = 314 cm²

Now we subtract from the area of the square.

20 x 20 = 400 cm²

400 - 314 = 86 cm²

8 0
3 years ago
Plz help me I need help I am so stuck
lana [24]
Answer:

4^-5

Step-by-step explanation:

Since the have liked exponents, the exponent stays the same and divide 8 by 2 which equals 4.

Then place the exponent back to the quotient

6 0
2 years ago
I'll give 19 points to whoever answers this question​
otez555 [7]
9: I think it is 48
10: 138
5 0
3 years ago
Read 2 more answers
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