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MatroZZZ [7]
3 years ago
7

-9x2+4xy-8y2+6x2-+y2

Mathematics
1 answer:
GaryK [48]3 years ago
5 0

Answer:

4xy-3x^2-9y^2

Step-by-step explanation:

-9x^2+4xy-8y^2+6x^2-y^2

simplify

4xy-3x^2-9y^2

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Ariel has a plastic ice cream cone in her food playset. The ice cream cone is a half-sphere sitting on top of a cone. What is th
WITCHER [35]

Answer: 1,230.88\ cm^3

Step-by-step explanation:

The volume of the toy ice cream cone is the sum of the volume of the cone (V_{c}) and the volume of the half-sphere (V_{hs}):

V_{toy}=Vc+V_{hs}

The formula for calculate the volume of a cone is:

V_c=\frac{\pi r^2h }{3}

Where "r" is the radius and "h" is the height.

In this case:

r=7\ cm\\h=10\ cm

The formula for calculate the volume of a half-sphere is:

V_{hs}=\frac{2}{3}\pi r^3

Where "r" is the radius.

In this case:

r=7\ cm

Subsituting values, we get:

V_{toy}=\frac{(3.14)(7\ cm)^2(10\ cm)}{3}+\frac{2}{3}(3.14)(7\ cm)^3=1,230.88\ cm^3

8 0
4 years ago
How can i evaluate the expression of , m=4 and n=9 , n+5m
kobusy [5.1K]
To evaluate the expression of m=4 and n=9, you would replace the variables (n and m) with the corresponding numbers. Giving you this equation: 9+5(4).
9+20 once simplified. 29 is your final answer.
5 0
3 years ago
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How can you find the gcf and common factors?
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List the prime factors of each number.Multiply those factors both numbers have in common. If there are no common prime factors, the GCF is 1.
GCF and common factors are pretty much the same thing. GCF focuses only on the largest common while common focuses on them all.
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Which of the following equations could be used to solve the given equation?
HACTEHA [7]
It is the third option 16x+9=4x
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julsineya [31]

Answer:

There is no way to determine who drew this, unless there is a picture of their drawings.

It will though be easy to determine.

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And a triangle with a 90 degrees angle is called right angled.

6 0
4 years ago
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