i need the answers to these math problems.?

Question

a right triangle has sides of lengths a, b, and c, with c the lenght of the hypotenuse. round answers to the nearest hundredth.

a=15, b=20, c=?

b=3, c=7, a=?

a=5, c=8, b=?

a=0.3, b=0.4, c=?

Answer 1

a^2+b^2=c^2 AND c^2-a^2=b^2

15^2+20^2=625
sqrt of 625=25

7^2-3^2=40
sqrt of 40=6.32

8^2-5^2=39
sqrt of 39=6.24

.3^2 +.4^2=.25
sqrt of .25=.5

Answer 2

1. c^2 = a^2 + b^2
= 15*15 + 20*20
= 225 + 40= 625
C = 25

2. A^2 = C^2 - B^2
= 7*7 - 3*3
= 49 - 9
= 40
a = 2rt10
= 6.4


3. b^2 = c^2 - a^2
= 8*8 - 5*5
= 64 - 25
= 39
b = 6.2

4. c^2 = a^2 + b^2
= 0.3*0.3 + 0.4*0.4
= 0.09 + 0.16
= 0.25
c = 0.5

Answer 3

a^2 + b^2 = c^2

15^2 + 20^2 = c^2
225 + 400 = c^2
625 = c^2
c = 25

a^2 + 3^2 = 7^2
a^2 + 9 = 49
a^2 = 40
a = 6.32

5^2 + b^2 = 8^2
25 + b^2 = 64
b^2 = 39
6.24

.3^2 + .4^2 = c^2
.09 + .16 = c^2
.25 = c^2
c = .5

Answer 4

Yo. These problems are so easy. All you need is this equation. It's hypotenuse theorem.

a^2 + b^2 = c^2

Plug and chug your numbers in your calculator and wha la!
It works! Although you may have to shift and solve for some answers. Look this is really easy. You should be able to do it now.

Answer 5

im too lazy to figure the 2nd and 3rd but the 1st is 25 and the 4th is 0.5

Answer 6

-- 25
--2
--6.5
---0.5 If it is wrong, .....SORRY..... I'm slow but littlebit in Mathematcs...that's why I hired my Own Tutor......hhhhmmm;-)---

Answer 7

a=15,b=20,c=?
15^2+20^2=400
400< square root
c=20
------------------------------
b=3,c=7,a=?
7^2-3^2=58 a=7.62
------------------------------------------
a=5,c=8,b=?
8^2-5^2=89 b=9.43
----------------------------------------------
a=0.3,b=0.4,c=?
0.3^2+0.4^2=0.25 c=0.5
----------------------------------------------

Answer 8

c=55

a=80

b=77

c=8.93

Answer 9

1)
c=sqrt(225+400)=25

2)
a=sqrt(49-9)=sqrt(40)=6.32

3)
b=sqrt(64-25)=sqrt(39)=6.24

4)
c=sqrt(0.09+0.16)
=sqrt(0.25)
=5/10
=1/2
=0.5