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3 years ago

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Find the surface area of a cone with a slant height of 13 and a radius of 13. Use 3.14 for pi. Round your answer to the nearest

tenth.
A. 1061.3
B. 1075.4
C. 1062.9
D. 1060

1 answer:

horsena [70]3 years ago

3 0

A 1061.3 I Hope This Helps

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Solve the system, please show each step.

Arlecino [84]

Answer: The solution of the system of equations is $x=\frac{-53}{11}$ , $y=\frac{47}{11}$ and $z=\frac{-38}{11}$ .

Explanation:

The given equations are,

$x+y+z=-4$ ..... (1)

$-x+2y+3z=3$ ..... (2)

$x-4y-2z=-15$ ...... (3)

From equation we get,

$x=-4-y-z$

Put this value in equation (4) and (5).

$-(-4-y-z)+2y+3z=3$

$3y+4z=-1$ .... (4)

$(-4-y-z)-4y-2z=-15$

$-5y-3z=-11$ .....(5)

Use elimination method to solve the equations (4) and (5).

Multiply equation (4) by 3 and equation (5) by 4, then add both equations as shown in figure,

$-11y=-47$

$y=\frac{47}{11}$

Put this value in equation (4).

$3(\frac{47}{11})+4z=-1$

$4z=-1-\frac{141}{11}$

$4z=\frac{-11-141}{11}$

$z=\frac{-152}{11\times 4}$

$z=\frac{-38}{11}$

Put $y=\frac{47}{11}$ and $z=\frac{-38}{11}$ in equation (1).

$x+\frac{47}{11}+\frac{-38}{11}=-4$

$x+\frac{9}{11}=-4$

$x=\frac{-44-9}{11}$

$x=\frac{-53}{11}$

Therefore, the The solution of the system of equations is $x=\frac{-53}{11}$ , $y=\frac{47}{11}$ and $z=\frac{-38}{11}$ .

3 0

3 years ago

Read 2 more answers

Find the maximum value of the function f(x) = -x^2 + 3x +2

LenaWriter [7]

Answer:

4.25

Step-by-step explanation:

-x^2 + 3x + 2 = 0

Divide by -1

X^2 -3x - 2 = 0

x^2-3x+ =2+2.25

(x-1.25)-4.25

(x-1.5)

8 0

3 years ago

Lily has a bottle containing 7/8 quart of milk. She pours 4/5 of it into s bowl. What amount of milk does she pour into the bowl

puteri [66]

7/8 quart of milk *(4/5)= 7/10 quart of milk.

Lily pours 7/10 quart of milk into the bowl.

Hope this helps~

7 0

3 years ago

Read 2 more answers

I need help with this and please tell me how you got it

Murrr4er [49]

Answer :
To get from x to y you have to divide by 2
Therefore the answer is
Tn = x ➗2
Or
1/2 x ( half of x )

6 0

2 years ago

Terri has a jar of orange, blue, green, and red chocolate candies. In the jar are 75 orange candies, 62 blue candies, and 52 gre

Keith_Richards [23]

Answer:

0.25

Step-by-step explanation:

Givens

orange: 75

Blue: 62

Green: 52

Red: x

Total: 252

Equation

75 + 62 + 52 + x = 252 Collect the like terms on the left.

Solution

189 + x = 252 Subtract 189 from both sides

x = 252 - 189

x = 63 Red Ones

Probability

P(Red) = 63/252

P(Red) = 0.25

3 0

3 years ago