Question

4 questions can someone help please?

Answer 1

Find the value of x, if possible round to the nearest 10th.

a.25.9
b.3.1
c.20.4
d.184

Answer 2

Find x, if possible round to the nearest 10th.
AB=18 BC=8 CD=5

a.28.8
b.21
c. 41.6
d.36.6

Answer 3

Find the diameter of the circle for BC=10 and DC= 23. round to the nearest 10th if possible.

a.62.9
b.52.9
c.7.7
d.42.9

Answer 4

A manufacturer is designing a two-wheeled cart that can maneuver through tight spaces. on one test model, the wheel placement (center) and radius is modeled by the equation (x+2)^2 +(y-1)^2=4. What is the graph that shows position and radius of the wheels?

Answer 5

Thats all i need help with i got all the other ones i understood!

Answer 6

Question 1 - find x
Read about intersecting chord theorem here:
http://1728.org/circpart.htm
8 * 23 = 9x
x = 20.4444444444

answer is c

Answer 7

Ohh cool i see

Answer 8

i think i need the most help on number 2 and 4 tho

Answer 9

I'd say the only one I know is question 1.
That 4th question seems really tough.
I remember someone asked a similar question about a week ago and it didn't get answered.

Answer 10

shoot well thanks for trying lol

Answer 11

For 2) CB * CA = CD * (CD + x)
Plug in the numbers and solve for x.

Answer 12

so confused lol

Answer 13

cb=8
ca=5?
cd=5
cd+x =

Answer 14

CB * CA = CD * (CD + x) or
BC * AC = CD * (CD + x)
BC = 8; AC = AB + BC = 18 + 8; CD = 5. Find x.

Answer 15

so is ac the same as ab x bc? bc=5?

Answer 16

i am HORRIBLE at math lol

Answer 17

AC = AB + BC = 18 + 8 = 26

Answer 18

3) AC * BC = DC^2
(AB + BC) * BC = DC^2
BC = 10; DC = 23
Find AB.

Answer 19

AB= 10

Answer 20

i think

Answer 21

for number 2 if its 26 and it said the round to the nearest 10th if possible it would be 28.8 or 21?

Answer 22

@ranga

Answer 23

There is a calculation mistake somewhere. That is not the answer.

Answer 24

BC * AC = CD * (CD + x)
BC = 8; AC = AB + BC = 18 + 8 = 26; CD = 5. Find x.
8 * 26 = 5 * (5 + x)
208 = 5 * (5 + x)
208 / 5 = 5 + x
41.6 = 5 + x
x = 41.6 - 5 = 36.6

Answer 25

ohhhhh ok

Answer 26

for number 3 i got d

Answer 27

42.9

Answer 28

Yes.

Answer 29

SWEET!

Answer 30

and for the last one i got C, it was quite confusing

Answer 31

(x+2)^2 +(y-1)^2=4
The general equation of a circle with center at (h,k) and radius r is:
(x-h)^2 + (y - k)^2 = r^2.
Compare this to the given circle equation:
h = -2, k = 1 and r = 2
Find the graph that has the center of the circle at (-2, 1) and has a radius of 2.

Answer 32

D?

Answer 33

its kinda the closest to 2