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Phantasy [73]
3 years ago
9

In two or more complete sentences explain how you would set up and solve the following equation: Peter opened his account with $

910 and withdrew $40 per week. Marla opened her account with $470 and withdrew $20 weekly. In how many weeks will their accounts be equal?
Mathematics
1 answer:
Lilit [14]3 years ago
4 0
What you would do is you would keep subtracting (I recommend a calculator for this task) from both accounts until you get an equal amount for each. You would also have to record this down that way you know each time what you got. (And please do not put the calculator part). Really hope this helps!!!

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never [62]
The answer is b. In b, 10 is divided from both 90 and 60, and that's gives you 9+6.
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BigorU [14]

9514 1404 393

Answer:

  water

Step-by-step explanation:

Comparison of numbers can be done a couple of different ways. One way is to subtract one from the other. If the difference is positive, the minuend (first number) is the larger of the two.

Another way is to divide one number by the other. If the ratio is more than 1, then the numerator is the larger number.

For numbers in scientific notation, the division is perhaps the easiest. Here, that gives you ...

  \displaystyle\frac{\text{water mass}}{\text{oxygen mass}}=\frac{2.99\times10^{-26}\text{ kg}}{2.66\times10^{-26}\text{ kg}}=\frac{2.99}{2.66}\approx 1.12

This value is greater than 1, so the mass of a water molecule is greater.

__

You will note that the multipliers (10^-26 kg) cancelled because they were equal. If they are unequal, the usual rules of exponents apply.

5 0
3 years ago
Find the value of the expression a? – b2 for a = 2 and b=1
docker41 [41]

Answer:a^2-b^2=3

Step-by-step explanation:

We need to find the value of the below expression i.e.

a^2-b^2 when a = 2 and b = 1.

So,

Put a = 2 and b = 1 in the above expression. So,

a^2-b^2=(2)^2-1^2\\\\=4-1\\\\=3

Hence, the value of the expression is equal to 3.

7 0
3 years ago
Plz help with these two question.
SVETLANKA909090 [29]
For number 1: you would add all the ages together, 23+19+50+49+67+34+30+59+40+33=404 and then divide that by how many workers(10) 404 divided by 10=40.4 and that is already rounded to the nearest tenth. So the answer to number 1 would be C. 40.4. Number 2: I'm just guessing but because the line on the graph shows is at around B) and C) is looks closer to $122 million, so I would go with D. $122 million

8 0
3 years ago
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