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kolbaska11 [484]
4 years ago
8

PLZ HELP ASAP SOLID GEOMETRY

Mathematics
2 answers:
myrzilka [38]4 years ago
6 0
Formula for surface area of a cylinder with base radius r and height h is:

2\pi r^2+2\pi rh

Now, just plug in 2 for r and 9 for h:

2\pi(2)^2+2\pi(2)(9)
8\pi+36\pi
44\pi
kvasek [131]4 years ago
5 0
1. use google
2. here is the formula
2\pi \: r \: h \:  + 2\pi \: r ^{2}
3. plug it in



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If x-2 is a factor of x^2+3x+k, what is the value of k?
Ne4ueva [31]
Take x-2=0

x=2

put the value of x in the equation

2^2 + 3(2) + k =0
4+6+k=0
10+k=0
k= -10

hope you understand
5 0
3 years ago
Graph the following function and identify any shifts, stretches, and symmetry and x and y intercepts:
Vlad [161]

Answer:

Step-by-step explanation:

The parent function here is y = x^2, whose graph is that of a parabola that opens up and has its vertex at the origin, (0, 0).

Translating this parent graph 3 units to the right and then up by 2 units will produce the desired graph of y = f(x) = (x - 3)^2 + 2.

There are no stretches or symmetry.

y-intercept:  let x = 0 and find y:  9 + 2 = 11.  y-intercept is (0, 11).

x-intercept:  let y = 0 and find x:  (x - 3)^2 + 2 = 0 => (x - 3)^2 = -2.  This has no real roots.  Thus, there are no x-intercepts.

4 0
3 years ago
Max wrote 10 pages of his lab report in 4 hours
seraphim [82]
He'd write 20 pages in 8 hours, 17.5 pages in 7 hours, 15 pages in 6 hours,13.5 pages in 5 hours, 7.5 pages in 3 hours, 5 pages in 2 hours, and 3.5 pages in one hour.

(4/10) = (1/3.5)
7 0
3 years ago
Find the acute angle formed by line 2y=x+1​
givi [52]

Answer:

26.57°

Step-by-step explanation:

2y = x + 1 \\ y =  \frac{1}{2} x + 1 \\ equating \: it \: with \\ y = mx + b \\ slope \: m =  \frac{1}{2}  \\  \because \:  \tan \theta = m \\  \therefore \: \tan \theta = \frac{1}{2}  = 0.5 \\ \therefore \:  \theta =  {tan}^{ - 1} (0.5) \\\therefore \:   \theta =  {tan}^{ - 1} ( \tan \: 26.565051177 \degree)  \:  \\  \\  \huge \red{ \boxed{\therefore \:   \theta = 26.57 \degree}}

6 0
3 years ago
PLEASE HELP WILL GIVE BRAINLIEST
OleMash [197]

Answer: y = -2x - 1, b = -1

Step-by-step explanation:

  • y = mx + b
  • -3 = 1(-2) + b
  • -3 = -2 + b
  • -1 = b

7 0
3 years ago
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