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aliya0001 [1]
2 years ago
14

Okay, this is the third time I've asked this question on Brainly and I NEED a REAL Answer. The question is in the picture. I set

it at 25 points.

Mathematics
2 answers:
Bumek [7]2 years ago
7 0
I’m not sure what the question is looking for
evablogger [386]2 years ago
5 0

Answer:

is the picture not working i only see a black screen but comment it so i can answer

\

Step-by-step explanation:

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A right triangle with vertices J(4, 0), K(0,0), and L(0,5) is rotated around the x-axis. To the nearest tenth of a unit, what is
statuscvo [17]
This is the concept of graphs and volume of the solid figures, given that the triangle J,K,L was rotated along the x-axis, the resultant figure was cone with with radius of 5 units and a height of 4 units;
The volume of a cone is given by;
V=πr^2(h/3)
r=5 units
h=4 units
V=π*5^2*(4/3)
V=104.72 units^3
the answer is B]
5 0
3 years ago
Jack is flying his kite . He runs 100 feet away from his house and lets out 45 feet of string . The angle of elevation from the
fiasKO [112]

Answer: 125.80 ft

Step-by-step explanation:

Asuming the described situation is as shown in the figure below, we need to find the distance h between the kite and Jacks house, but first we need to find the x, y and then d.

How?

We will use trigonometry, especifically the trigonometric functions sine and cosine:

For y:

sin(65 \°)=\frac{y}{45 ft} (1)

Where y is the opposite side to the angle and 45 ft the hypotenuse.

Isolating y:

y=40.78 ft (2)

For x:

cos(65 \°)=\frac{x}{45 ft} (3)

Where x is the adjacent side to the angle.

Isolating x:

y=19.017 ft (4)

Finding d:

d=x+100 ft (5)

d=19.017 ft +100 ft

d=119.017 ft (6)

Now that we have found these values, we have to work with a bigger triangle, where the hypotenuse is the distance between the kite and Jack's house h and the sides are the values calculated in (4) and (6).

So, in this case we will use the <u>Pithagorean theorem</u>:

h^{2}=y^{2} +d^{2} (7)

Isolating h and writing with the known values:

h=\sqrt{y^{2} +d^{2}} (8)

h=\sqrt{(19.017 ft)^{2} +(119.017 ft)^{2}} (9)

h=125.80 ft This is the distance between the kite and the house

3 0
3 years ago
Find the 11th term of the arithmetic sequence graphed below. 6 3 -3 -6 -9 -12 -15 -18​
Yakvenalex [24]
-57 if you keep following the pattern
8 0
3 years ago
Show that 4128 0012 4389 0110 is an invalid VISA number card
valentinak56 [21]

visa cards begin with 4 and then have 13 or 16 digits but here we have a number beginning with 4 and then it has the 15 digits.

<u>Step-by-step explanation:</u>

  1. Each card has a different first digit number. The maximum length of this type of credit card number can be up to 19 digits.
  2. In the visa card starting 6 digits are always said to be the issuer identifier.
  3. The visa cards will have the starting digits as 4 whereas in Mastercard the starting digit is 5 but it has 16 digits numbers.
7 0
3 years ago
A rate of 4 centimeters per second is equal to how many meters per hour?
vampirchik [111]
So, let's start with the basics.
One meter is 100 centimeters. Seeing that we have 60 seconds in a minute, and 60 minutes in an hour. The formula would look like this.
(60*60)4
3600*4 = 14400 centimeters
So then we divide it by 100, and
144 meters
4 0
3 years ago
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