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sleet_krkn [62]
3 years ago
14

(x2y-3y2+5xy2)-(-x2y+3xy2-3y2)

Mathematics
1 answer:
Reil [10]3 years ago
8 0
2x2y+8xy2-6y2 .........
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The volume of a right circular cone is 2,279.64 in cubed. If the height of the cone is 18 in, what is the diameter of the cone?
Aleksandr [31]

ANSWER

A. 22 in

EXPLANATION

The volume of a cone is calculated using the formula:

Volume =  \frac{1}{3}  \times \pi {r}^{2} h

It was given that: the volume is 2,279.64 in³

The height of the cylinder is also given as: h=18 in.

We substitute, the given values into the formula to get:

2279.64=  \frac{1}{3}  \times (3.14) \times {r}^{2}  \times 18

2279.64= 18.84 {r}^{2}

{r}^{2}  =  \frac{2279.64}{18.84}

{r}^{2}  = 121

We take positive square root to get;

r =  \sqrt{121}

r = 11in

Therefore the diameter is 2(11) which is equal to 22 inches.

5 0
3 years ago
Line p passes through A(-2, -4) and has a slope of 1/2 What is the standard form of the equation for line p?
yarga [219]
Point slope form is y-(-4) = 1/2(x-(-2)

y+4 =1/2 (x+2)

now the standard form 2y+8=x+2
so -x+2y=-6 is the equation for line p in standard form
4 0
3 years ago
Three numbers add up to 180. The second number is twice the first, and the third number is three times the first. WHAT IS EACH N
Ratling [72]
The answer is 30,60,90. Because 60 is twice the number 30 and 90 is three times the first number.
8 0
4 years ago
3x3-5/5x6+19 i don’t know what I’m don’t wrong
KonstantinChe [14]

Hi there!

For these two equations, we would be using PEMDAS...

3·3=9-5=4

5·6=30+19=49

Hope this helps!

4 0
3 years ago
A car is 160 inches lorrg.
Andreyy89
The truck is 171.2%. if you calculate the percentage of 160 and add them together, you will get 171.2
7 0
2 years ago
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