algbra help?

Question

A computer system is advertised with a 14-inch monitor. The measurement of the monitor is along the diagonal of the screen. The height of the monitor screen is 9 inches. What is the width of the monitor screen?
11.2 in
16.6 in
10.7 in
9.6 in

Question 22 1 points Save
Determine which set of three numbers could represent the sides of a right triangle.
9, 41, 41
9, 40, 41
8, 41, 40
10, 40, 42

Question 23 1 points Save
Determine which set of three numbers could not represent the sides of a right triangle.
3, 4, 5
21, 28, 35
14, 19, 24
30, 40, 50

Question 24 1 points Save
Find the distance between the pair of points. Round to the nearest tenth is necessary. (-13, -8) and (6, 17)
11.4
12.1
31.4
23.7

Answer 1

11.2
9,41,41
21,28,35
11.4

Answer 2

Q.21 Use the Pythagorean Theorem:
... d^2 = w^2 + h^2
... 14^2 = w^2 + 9^2
... 196 = w^2 + 81
... w^2 = 196 - 81 = 115
... w = V115 = 10.72

Q.22 Use the Pythagorean Theorem, with the largest number as hypotenuse. The only correct option is
... 41^2 = 40^2 + 9^2
... 1681 = 1600 + 81

Q.23 These sets are all multiples of { 3, 4, 5 }, except the third option. This is not a right triangle because
... 24^2 =/= 14^2 + 19^2
... 596 =/= 196 + 361 = 557

Q.24 Subtract the x- and y-coordinates, then use Pythagoras:
... dX = 6 - (-13) = 19; dY = 17 - (-8) = 25
... d^2 = dX^2 + dY^2
... d^2 = 19^2 + 25^2 = 361 + 625 = 986
... d = V986 = 31.4

Answer 3

First question: you are given the lengths of the hypotenuse and one leg of a right triangle. Use pythagorean theorem to calculate the length of the other leg.

22. Again, plug these into pythagorean equation, always using the largest number as the hypotenuse.

23. Same as above

24. Again you have the length of the legs of the right triangle (the difference between the y-values and x-values). Use pythag to find the length of the hypotenuse.

In case you're unaware pythagorean theorem is:
h^2 = a^2 + b^2, where h, a, and b represent the length of the hypotenuse and the two legs, respectively

Answer 4

Um.... so which equation do you desire - the front room, or Nick's mattress room? And who the heck is Nick? yet, if we take the equation - the room is 3 ft wider than X, and 5 ft longer than X, then: the fringe, P, is P = 2(X+3) + 2(X+5) = 2X+6 + 2X + 10 = 4X + sixteen So, say the rug is 8 foot sq.... then, the fringe is 4(8) + sixteen = 32 + sixteen = 40 8 ft.

Answer 5

Is this a free homework solving service?
You will see the result of your efforts when it comes to exams and you cannot solve the questions. You will not have yahoo answers then to help you.

Anyways, I always wondered what they meant when they say 19" monitor. I have two 19"monitors and they look totally different.
Good to know.

Answer 6

I will do the first one for you: sqrt(14^2-9^2)=sqrt(115)=10.72 inches.

Answer 7

ans s r------->
1. 10.7 in
2.9,40,41
3.14,19,24
4.31.4