Answer:
The first Graph
Step-by-step explanation:
its not the third because it's a dotted line, so it wouldn't be equal to. it's not the second because it's shaded in the wrong place, making it less than.
The dimensions on the scale drawing would be 1 inch by 0.8 inches.
The scale is 1 in: 10 ft; since the actual width of the deck is 10 ft, then it will be 1 inch on the scale. To find the width:
1/10 = x/8
Cross multiply:
1*8 = 10*x
8 = 10x
Divide both sides by 10:
8/10 = 10x/10
0.8 = x
The width on the scale drawing will be 0.8 inches.
The algebraic expression for twice difference of a number (n) and 6 is expressed algebraically as, 2(n - 6).
<h3>What is an Algebraic Expression?</h3>
An algebraic expression can be used to model word problem or a situation with the use of variables, operation signs and numbers.
Difference is minus (-)
Let n represent the unknown number.
Thus, twice difference of a number (n) and 6 is expressed algebraically as, 2(n - 6).
Learn more about algebraic expressions on:
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For this case we have to:
n: Represents the weight of Mary in Kg.
If your sister weighs 15 kg less we have:
![y = n-15](https://tex.z-dn.net/?f=y%20%3D%20n-15)
Where "y" represents the weight of his sister in kg.
To find how many times Mary is heavier than her sister, we must divide Mary's weight by her sister's weight.
We have then:
![N= \frac{n}{n-15}](https://tex.z-dn.net/?f=N%3D%20%5Cfrac%7Bn%7D%7Bn-15%7D)
Answer:
Mary is
times heavier than her sister.