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Natalija [7]
3 years ago
15

Approximately how long will it take a 100-gram sample of francium-223 to decay to 20 grams?

Mathematics
1 answer:
Nikitich [7]3 years ago
4 0

Answer: 50 minutes

Answer choices:

20 minutes

70 minutes

50 minutes

30 minutes

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Please help, due tommo
Vlad [161]

Answer:

w=3z+2

Step-by-step explanation:

The variable w is equivalent to y, and the variable z is equivalent to x.

2=3(0)+2

2=2

6 0
3 years ago
For the third week of February, Betty Robinson worked 46 hours. Betty earns $17.50 an hour. Her employer pays overtime for all h
anygoal [31]

Answer:

1. 700

2. $157.50

3. $857.50

Step-by-step explanation:

Regular pay is calculated by taking 40 hours x $17.50 to get $700.

Overtime is calculated by taking 6 hours x 17.50 x 1.50 to get $157.50

Gross pay would be adding these two amounts together.

6 0
3 years ago
How to put a fraction into a ti 84 plus graphing calculator?
stiks02 [169]
To insert fraction values; 

1) Click on "math" found under the alpha option 
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Hope I helped :)
4 0
3 years ago
Question 19 of 25
Ronch [10]

The next step in the series will be Option B

<h3>What is a Series ?</h3>

A series is the sequence of object in pattern.

From the given figure it can be seen that the red and blue colour semicircle are shifting alternately , and the number series is increasing by 1

Therefore the next step is red on the right side , blue on the left side and no. 4 written on blue

Therefore Option B is the right answer.

To know about Series

brainly.com/question/15415793

#SPJ1

4 0
2 years ago
Please help. I’m in a blank here
nordsb [41]
She is not correct because the absolute value of -2 is 2 and the absolute value of 2 is 2
5 0
3 years ago
Read 2 more answers
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