1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lana71 [14]
3 years ago
15

I got 2136cm2 but my answer key says different... please help and show all work

Mathematics
2 answers:
patriot [66]3 years ago
7 0

Answer:

<h2>2137.14 cm²</h2>

Step-by-step explanation:

<h2>surface area = 2πr²+2πrh</h2><h2>2×22÷7×10²+2×22÷7×10×24</h2><h2>=2137.14</h2>
Lena [83]3 years ago
6 0

It all depends what value they use for pi 3.14 or 22/7 or just pi on the calculator.

I used 3.14 and got 2.135.2

2(3.24)(10)^2+2(3.14)(10)(24)

Step-by-step explanation:

You might be interested in
40 points” help HLP HL
cestrela7 [59]

Answer:

D: {(-5, -4, 2, 2, 5)}

R: {(-6, 3, 4, 1, 5)}

The relation is NOT a function.

Step-by-step explanation:

By definition:

A relation is any set of ordered pairs, which can be thought of as (input, output).

A function is a <em><u>relation</u></em> in which no two ordered pairs have the same first component (domain/input/x value) and different second components  (range/output/y value).

Looking at the given points in your graph, and in listing down the domain and range, we can infer that the relation is not a function because there is an x-value (2) that has two corresponding y-values: (2, 4) (2, 1).

Another way to tell if a given set of points in a graph represents a function by doing the "Vertical line test." The graph of an equation represents y as a function of x if and only if no vertical line intersects the graph more than once. Looking at the attached image, I drew a vertical line over points (2, 4) (2, 1). The vertical line intersects the two points, which fails the vertical line test. This is an indication that the given relation is not a function.

8 0
2 years ago
The hypotenuse of a right triangle is 13.0, and one leg is 9.0 units shorter than the other. Find the dimensions of the figure (
Darina [25.2K]
Let, one leg be x units. 
since the other leg is 9.0 units shorter than the other, 
the measure of the other leg =x-9 
hypotenuse =13.0 units 
According to Pythagorean theorem, the square of the hypotenuse is equal to the sum of squares of the other two sides.  
x^2 +(x-9)^2 =13^2 
x^2 + x^2 -18x +81 = 169 
2x^2-18x-88=0 
Divide the whole equation by 2 
x^2 - 9x -44 =0  
Let's use the quadratic formula to find the roots. 
formula: x= [-b ± sqrt(b^2-4*a*c)]/2*a  
a=1 b=-9 c=-44 
x= [9±sqrt(81+176)]/2
 =[9±sqrt(257)]/2
 =[9±16.03]/2
 =25.03/2 or -7.03/2
 length of a triangle cannot be negative,
 Therefore, x=25.03/2 =12.52 
 one leg =12.5 units
 other leg =12.52-9 =3.5 units
4 0
3 years ago
Suzy has a collection of quarters and dimes. Together she has 44 coins worth $6.95. How many quarters and how many dimes does Su
OverLord2011 [107]
X = quarters
y = dimes

0.25x + 0.10y = 6.95 or 25x + 10y = 695
x + y = 44

25x + 10y = 695
25 (x + y = 44)

25x + 10y = 695

25x + 25y = 1,100

-15y = -405
y = 27 dimes
and 17 quarters
6 0
3 years ago
Your favorite video game just went on sale for 33% off.
abruzzese [7]

Answer:

$40.20

Step-by-step explanation:

60 / 100 = 0.6

0.6 x 33 = 29.8

60 - 29.8 = 40.2

Thus he price after the discount would be $40.20

3 0
2 years ago
Tyler’s brother works in a shoe store.
mylen [45]
I believe it should be (c)?
5 0
3 years ago
Other questions:
  • Which supreme court case was the first to address the second amendment​
    10·1 answer
  • a weed called the Raindrop Vine is known for growing at a very fast rate it can grow up to 0.75 ft per day how fast in inches pe
    14·2 answers
  • Mr. and Mrs. Storey drove 2,400 miles during their vacation. Mr. Storey (y) drove 3 times as many miles as Mrs. Storey (x).
    6·1 answer
  • 32 cookies. Each cookie costs $.65, including tax. Of the cookies she bought, 1/4 were lemon cookies. What was the total cost of
    6·1 answer
  • Whats 4x+12 divided by 3
    15·1 answer
  • A travel agency charges $64 for each bus ticket and $82 for each train ticket .How much doesit cost to buy 3 bus tickets and 4 t
    13·1 answer
  • Factor 64b-16c to identify the equivalent expressions. *
    15·1 answer
  • You randomly choose one marble from the jar. Find the theoretical probability of the event.
    9·1 answer
  • If Kaci bought 28 pounds of cheese for $98, how much did she spend per pound?
    15·2 answers
  • Translate the sentence into an inequality.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!