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trapecia [35]
3 years ago
13

What is the surface area of a cylinder with radius x + 3 and height x + 11?

Mathematics
1 answer:
vova2212 [387]3 years ago
6 0

Answer:

A≈263.89

Step-by-step explanation:

Solution

A=2πrh+2πr2=2·π·3·11+2·π·32≈263.89378

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What is the slope of the line that contains the points (3, 4) and (1, 2)? A. 1 B. –1 C. D.
Scorpion4ik [409]
If you have your points (3,4) (1,2) x=3 and 1 and y=4 and 2 so find a point on the x or y line and go up and over till your line crosses another point and that will give you your slope
8 0
3 years ago
Solve using elimination. -2x + y = 1 -6x - y = -9<br> HELP
laiz [17]

Answer:

(x,y) = (8,7)

Step-by-step explanation:

Solve equation [2] for the variable  x

 [2]    x = y + 15

Plug this in for variable  x  in equation [1]

[1]    (y +15) + y = 1

[1]    2y = -14

Solve equation [1] for the variable  y

[1]    2y = - 14

[1]    y = - 7  By now we know this much :

x = y+15

y = -7

// Use the  y  value to solve for  x

x = (-7)+15 = 8

Solution :

{x,y} = {8,-7}

5 0
3 years ago
One electrician charges his customers a $60 service fee plus $35 per hour.
gavmur [86]

Answer:

2 hours; $130

Step-by-step explanation:

We can do this by setting up an equality since we are finding when they are the same. Say x is the number of horus:

65 * x = 60 + 35* x

30 * x = 60

x = 2 hours

The cost will be the same at two hours, and plugging it in, we can get 65*2=130.

5 0
2 years ago
What is the answer of 2×82
slamgirl [31]
The answer to this problem is 164.

Hope this answer helps! feel free to ask any additional questions :)
8 0
2 years ago
Help!!! i don’t understand how i would be able to find rt
liq [111]

Given:

M is the mid-point of RS

N is the mid-point of ST

MN = 18.4

To find:

The length of RT.

Solution:

The reference image is attached below.

Joining mid-point M and N, we get mid-segment MN.

MN is parallel to RT.

Triangle mid-segment theorem:

If a segments joins the mid point of a two sides of triangle, then the segment is parallel to the third side and is half of that side.

$\Rightarrow MN=\frac{1}{2} RT

Substitute MN = 18.4

$\Rightarrow 18.4 =\frac{1}{2} RT

Multiply by 2 on both sides.

$\Rightarrow 2\times 18.4 =2\times \frac{1}{2} RT

$\Rightarrow 36.8=RT

The length of RT is 36.8.

5 0
2 years ago
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