All categories

3 years ago

Please answer this question now

Mathematics

1 answer:

Luda [366]3 years ago

4 0

Answer:

Step-by-step explanation:

You know that angle Y is a right angle because XY is the radius and YZ is a tangent to the circle. So, you can use the pythagorean theorem to find the third side:

XY^2+4^2=5^2

XY^2+16=25

XY^2=9

XY=3

Hope this was helpful! :)

You might be interested in

What is the sales tax on a $8.50 purchase if the sales-tax rate is 6.5% (6 1/2 %)?

konstantin123 [22]

The answer is $0.55

$8.50 is 100%.
x is 6.5%

8.50 : 100% = x : 6.5%
x = 8.50 : 100% * 6.5%
x = 0.5525
x ≈ $0.55

5 0

3 years ago

Read 2 more answers

Ms. Keisha has just purchased supplies for her classroom. She bought 67 markers, 32 rulers, and one projector. The markets cost

Vladimir79 [104]

Answer:

221.65

Step-by-step explanation:

67 x .9 = 60.3

32 = 1.95 = 62.4

so you got 60.3 + 62.4 + 98.95 = 221.65

hope this helps please make brainliest.

7 0

4 years ago

Read 2 more answers

I need the answers fast

anygoal [31]

Answer:

w=51

x=90

y=38

Step-by-step explanation:

got the angles. I'm not so sure about the lengths of the triangle....

5 0

3 years ago

The number 54 is a multiple of 9 TRUE OR FALSE

klio [65]

if you were to multiply 9 by 6 you would get 54, so yes its true.

7 0

2 years ago

Read 2 more answers

Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and just keeping c

g100num [7]

Answer:

a) 0.4567

b) 6 hours

Step-by-step explanation:

We are given the following information the question:

The battery life follows a normal distribution with

$\mu = 9.75\\\sigma = 2.3$

Formula:

$z = \displaystyle\frac{x-\mu}{\sigma}$

a) We have to find probability such that battery life exceeds 10 hours, that is,

P(X>10)

$P(z > \displaystyle\frac{10 - 9.75}{2.3}) = P(z>0.1086)\\\\= 1 - P(z \leq 0.1086)\\= 1- 0.5433\\=0.4567$

b) We have to find battery life such that

$P(X \leq x) = 0.05\\\\P(z \leq \displaystyle\frac{x-9.75}{2.3}) = 0.05\\\\\displaystyle\frac{x-9.75}{2.3} = -1.64 \\\\x = (-1.64)(2.3) + 9.75\\x = 5.978$

Here, we calculated the value of z from the normal distribution table.

So, after approximately 6 hours one should plan to recharge the phone.

7 0

4 years ago