Answer:
2,000,000 + 800,000 + 90,000 + 7,000 + 900 + 20 + 6
Step-by-step explanation:
It simplifies to 27/70 if you use a calculator and do the math right
Answer:
B. 200
Step-by-step explanation:
A perfect square is the multiplication of two equal integers such as 1*1=1, 2*2=4, 3*3=9. From the examples, 1, 4, 9 are perfect square.
Non perfect square numbers are 1*2=2,
3*1=3,
5*1=5,
3*2=6,
6*1=6,
7*1=7
Examples of perfect squares:
1*1=1
2*2=4,
3*3=9,
4*4= 16,
5*5=25,
6*6=36,
7*7=49,
8*8=64,
9*9=81,
10*10=100,
11*11=121,
12*12=144,
13*13=169,
14*14=196,
15*15=225 and so on
Answer: Option B is the cheaper deal (the 12 batteries for $14.76)
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Explanation:
For the first deal we can say
3 batteries = 4.80 dollars
3/3 batteries = 4.80/3 dollars .... divide both sides by 3
1 battery = 1.60 dollars
The unit price for the first deal is $1.60 per battery.
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For the second deal we could say
12 batteries = 14.76 dollars
12/12 batteries = 14.76/12 dollars .... divide both sides by 12
1 battery = 1.23 dollars
The unit price for the first deal is $1.23 per battery.
This is the cheaper deal.
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So in short, you're dividing the total cost over the number of items to get the unit price.
Answer:
When x = 5, y = 1.44
Step-by-step explanation:
We know that when 'y' varies inversely with 'x', we get the equation
y ∝ 1/x
y = k/x
where 'k' is called the constant of proportionality
In our case, given that y varies inversely as the square of x.
so
y ∝ 1/x²
y = k/x²
When x = 3, y = 4, we need to find k
y = k/x²
k = yx²
k = 4(3)²
k = 36
so, the value of k = 36
Now, we need to find y when x = 5
so substitute k = 36, x = 5 in the equation
y = k/x²
y = 36 / (5)²
y = 36 / 25
y = 1.44
Therefore,