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Alona [7]
4 years ago
9

A soduim isotpe, Na24, has a life of 15 hours

Mathematics
1 answer:
masha68 [24]4 years ago
4 0
What's the question?
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PLEASE HELP I WILL MARK YOU BRAINIEST PLEASE
cupoosta [38]

Answer:

Zeniab makes the most money by $0.25, and would make $2.50 more.

Step-by-step explanation:

Okay, the good news is, this problem is about finding how much you make in an hour.

Zainab makes $44 for 8 hours

and

Keziah makes $47.25 in 9 hours.

in each problem, we can set them up in an equation of

$44=8x

and

$47.25=9x

In the first equation, divide both sides by 8 to isolate the x.

that would be 44/8 = x which is $5.50 per hour for Zainab.

In the second equation, divide both sides by 9 to isolate the x.

That would be 47.25/9 = x which is $5.25 per hour for Keziah.

This means that Zainab would make more per hour, and to find the second part of the question for a 10 hour job,

(<u>You can multiply any number by 10 easily by moving each number up one place. Hundreds go to the thousands when you multiply by 10 as an example. In this problem, 5.50 times 10 would be $55.00 because the 5 behind the decimal would be moved up infront of the decimal)</u>

<u>Zainab would make $55 for 10 hours</u>

<u>Keziah would make $52.50 for 10 hours</u>

<u>Then, take the difference of those final totals, which is $2.50, or multiply $0.25 by 10 to get $2.50</u>

8 0
3 years ago
Joy wants to buy strawberries and raspberries to bring to a party. Strawberries cost $1.60 per pound and raspberries cost $1.75
zimovet [89]

Answer: 1.60x + 1.75y is less than or equal to 10

Step-by-step explanation:

Since the strawberries cost $1.60 per pound, it would be x pounds times $1.60 for the total cost of strawberries. Since the raspberries cost $1.75 per pound, it would be y pounds times $1.75 for the total cost of the raspberries. The total cost of both, or 1.60x + 1.75y, must be equal to or less than 10 because she cannot spend over 10 dollars.

5 0
4 years ago
If you assume that there are exactly 365 days in a year, how many seconds are there in one year? Give your answer to the nearest
Hunter-Best [27]
365*24*60*60=31536000s
So third option will be the answer
7 0
4 years ago
A quarter, a nickel, and a dime are all flipped. how many possible outcomes are there?
AlekseyPX

Possible outcomes

1. H H H

2. T T T

3. H T T

4. H H T

5. T T H

6. T H T

7. H T H

8. T H H

There are 8 possible outcomes.


6 0
4 years ago
749ml= --------L please answer this question
maria [59]

Answer:

The answer is 0.749 L.

Step-by-step explanation:

L, dc, cl, ml

0. 7 4 9

4 0
3 years ago
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