![subject](/tpl/images/cats/mat.png)
The equation represents an ellipse. Which points are the approximate locations of the foci of the ellipse? Round to the nearest tenth.
![ansver](/tpl/images/cats/User.png)
![ansver](/tpl/images/cats/User.png)
d. 8
step-by-step explanation:
the given radical expression is:
we can rewrite this as:
we express as square numbers to get;
the exponents will now cancel out to give.
the correct answer is d
![What is the value of the radical expression shown below](/tpl/images/05/03/HWQGaktC5x9nRpLN.jpg)
![ansver](/tpl/images/cats/User.png)
n=9
step-by-step explanation:
7 times a number = 7n
decreased by 13 = 7n-13
same as is =
5 times the number = 5n
increased by 5 = 5n+5
7n-13 = 5n+5
2n=18
n=9
![ansver](/tpl/images/cats/User.png)
d. $180
step-by-step explanation:
if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,
so the area of the floor is 108 square feet, converting that into square yards we get,
the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,
hence, the cost of carpet is $180.
assuming the dimensions of the room be,
15 ft by 12 ft
so, the area of the floor of that room is,
we can convert 180 square feet into square yards, we know that,
1 sq ft = 0.111 sq yard
so, 180 square feet is,
so the area of floor is 20 square yards.
now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,
so, it will cost $300.
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