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3 years ago

11

The yellow is sub 10 from both sides

1 answer:

PSYCHO15rus [73]3 years ago

4 0

Yellow, subtract 10 from both sides

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How much of a radioactive substance must be presented to decay to 80 grams in 12 years if the half-life of the substance is 7.6

max2010maxim [7]

Answer:

Radioactive in half life is 51gram

Step-by-step explanation:

80grams:12years

X :7.6years

12x÷x=x

7.6×80÷12=51gram

4 0

2 years ago

Read 2 more answers

Ricardo has 2020 coins, some of which are pennies (1-сent coins) and the rest of which are

r-ruslan [8.4K]

Answer:

B

Step-by-step explanation:

6 0

3 years ago

Which number is Composite (hope i spelled it right)<br><br> 15<br><br> 17<br><br> 19<br><br> 23

quester [9]

Answer:

15.

Step-by-step explanation:

15 is composite because 3 * 5 = 15.

The others are prime.

8 0

3 years ago

I need help with this last question. Please help

dusya [7]

The angle of STV would be 140 degrees.

3 0

3 years ago

in a coin jar, there are 45 nickles. the number of pennies and nickles together equal the number of dimes. there are 2 quarters

fredd [130]

Answer:

45 nickels

30 quarters

60 dimes

15 pennies

Step-by-step explanation:

Quarters:

45÷3=15

15×2=30

Dimes:

30×2=60

Pennies:

60-45=15

HOPE THIS HELPS!!!!!:)

3 0

3 years ago