Please help, I will give brainliest, and look at the screen shot!

Z is the intersection of the triangles ______

Alja [10]

Answer:

Circumcenter of a triangle is formed by joining the perpendicular bisectors of three sides of triangle.

As we draw perpendicular bisectors of three sides, they will intersect at one point(say O) which lies inside the circle.

From that point of intersection, draw a circle touching each of the vertex of a triangle and we get a circumcircle. And O becomes centre of the circle.

Hence, circumcenter lies inside the triangle.

7 0

3 years ago

Read 2 more answers

Calculate the snow load for the low-slop (flat) roof. For this structure, we will use the following coefficients. Cs = 1.0 Ce =

CaHeK987 [17]

Answer:
The width of member is as follows:
b = 3 ft

b = 3 × 12 in.

b= 36 in.
The depth of member is as follows:

d = 8 ft

d = 8 × 12 in.

d=96 in.
Since the structure used is Douglas fir-Larch lumber of size 3 × 8 size. Hence, tensile strength, f =1000 psi
Calculate the net area of the member as follows:
A = (b - ∅) × d

A= (36 - 7/8) × 96
$A = 3372in^{2}$
Calculate the maximum axial tensile load by ASD method as follows:
P = f × A

P = 1000 x 3372

P = 3372000 lbs
P = 3372 kips

6 0

2 years ago

Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age with a mean of 93 seconds and

kkurt [141]

Answer: The running time should at least 119.32 seconds to be in the top 5% of runners.

Step-by-step explanation:

Let X= random variable that represents the running time of men between 18 and 30 years of age.

As per given, X is normally distrusted with mean $\mu=93\text{ seconds}$ and standard deviation $\sigma=16\text{ seconds}$ .

To find: x in top 5% i.e. we need to find x such that P(X<x)=95% or 0.95.

i.e. $P(\dfrac{X-\mu}{\sigma}$

$P(Z$

Since, z-value for 0.95 p-value ( one-tailed) =1.645

So,

Hence, the running time should at least 119.32 seconds to be in the top 5% of runners.

6 0

2 years ago

A standardized variable always has a mean of _______ and a standard deviation of _______. b. The z-score corresponding to an

Feliz [49]

Answer:

Step-by-step explanation:

We know that normal distribution as special characteristics such as symmetry, unimodal, no skewness, mean =median=mode, etc

A standardized variable for normal variable X is

$Z = \frac{x-\mu}{\sigma}$ will be normal with mean =0 and sigma =1

The probability will be divided equally on either side of the mean =0 i.e. y axis

Hence the answers would be

A standardized variable always has a mean of __0_____ and a standard deviation of ___1____. b. The z-score corresponding to an observed value of a variable tells you ____the std normal score.___. c. A positive z-score indicates that the observation is __to the right ____ the mean, whereas a negative z-score indicates that the observation is __to the left_____ the mean

6 0

3 years ago

This needs a little working out. Just part A to simplify to find 21.

prisoha [69]

Answer:

see explanation

Step-by-step explanation:

Since the pentagon has one line of symmetry. This will be a vertical line through C, thus

CD = BC = x + 1 and ED = AB = 2x + 3

Perimeter = AE + ED + DC + CB + BA

= 4x + 2x + 3 + x + 1 + x + 1 + 2x + 3 = 10x + 8

Perimeter is given as 21, thus

(b)

10x + 8 = 21 (subtract 8 from both sides )

10x = 13 ( divide both sides by 10 )

x = $\frac{13}{10}$ = 1.3

6 0

2 years ago