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3 years ago

What is the sum of5 + 4 +

Mathematics

2 answers:

Ymorist [56]3 years ago

7 0

Answer:

Step-by-step explanation:

5+4= 9 w(ﾟДﾟ)w lol

Nadusha1986 [10]3 years ago

6 0

Answer:

Step-by-step explanation:

5+4=9

You might be interested in

The mean annual tuition and fees for a sample of 14 private colleges in California was $37,900 with a standard deviation of $7,2

JulijaS [17]

Answer:

Z_{0.005}>Z H₀ is wrong and other is correct. IT means $35000 is not mean value.

Step-by-step explanation:

Two hypothesis:

H₀=$35,000

Hₐ≠$35,000

Test Formula:

$Z=\frac{(X-u)}{\frac{S}{\sqrt{n} } }$

Where:

X is the mean value=$37,900

u is the value with 0.01 significance=$35000

S is the standard deviation

n is the sample size

$Z=\frac{(37900-35000)}{\frac{7200}{\sqrt{14} } }$

Z=1.507

Z with 0.01 significance:

0.01/2=0.005=0.05%

Degrees of freedom=14-1=13

From t distribution table at 0.05% and 13 dof:

$Z_{0.005}$ =4.221

Z_{0.005}>Z H₀ is wrong and other is correct. IT means $35000 is not mean value.

7 0

4 years ago

How do u write a unit rate for 12 stunts in 4 movies

son4ous [18]

Divide both values.

12/4 = 3

3 is how much stunts per movie.

Answer: 3 stunts in one movie

6 0

3 years ago

Read 2 more answers

Mr. Lopez, a Language Arts teacher, has his students read a certain number of pages out loud in class to start a book, and then

bazaltina [42]

the student read 35 pages in class to start the book because the days are like the pages assigned and read for homework

7 0

3 years ago

Read 2 more answers

The curve given by x=sin(t),y=sin(t+sin(t)) has two tangent lines at the point (x,y)=(0,0). List both of them in order of increa

SOVA2 [1]

Answer:

y = 0

y =2x

Step-by-step explanation:

Given parametric equations:

x (t) = sin (t)

y (t) = sin (t + sin (t))

The slope of the curve at any given point is given by dy / dx we will use chain rule to find dy / dx

(dy / dx) * (dx / dt) = (dy / dt)

(dy / dx) = (dy / dt) / (dx / dt)

Evaluate dx / dt and dy / dt

dx / dt = cos (t)

dy / dt = cos (t + sin (t)) * (1+cos (t))

Hence,

dy / dx = (1+cos(t))*cos(t + sin (t))) / cos (t)

@Given point (x,y) = 0 we evaluate t

0 = sin (t)

t = 0 , pi

Input two values of t and compute dy / dx

@ t = 0

dy / dx = (1 + cos (0))*cos (0 + sin (0))) / cos (0)

dy / dx = (1+1)*(1) / (1) = 2 @ t = 0

@t = pi

dy / dx = ( 1 + cos (pi))* cos (pi + sin (pi)) / cos (pi)

dy / dx = (1-1) * (-1) / (-1) = 0 @ t = pi

The corresponding gradients are 0 and 2 in increasing order and their respective equations are:

y = 2x

y = 0

5 0

3 years ago

In ABC, O is the centroid of the triangle and AO is 12.7 m. Find the length of OY and AY.

ratelena [41]

Answer:

$\boxed{OY = 6.35 m} \\\boxed{AY=19.05 m}$

Step-by-step explanation:

The centroid of a triangle always cuts a triangle perfectly at 2/3.

What I mean by this is that the line that touches the tip of the triangle and touches the median of the base is cut into one third and its other part is cut into two thirds of the whole segment. This segment is AY.

Knowing this, I can tell that OY is 1/3 of the length of AO, which is given to be 12.7 m.

To find OY, make an equation where AO and OY add up to AY.

$12.7+\frac{1}{3} x=x$

The variable x represents the length of AY, and 1/3x represents the length of OY (because it is one-third of AY).

Solve the equation by subtracting 1/3x from both sides.

$12.7=\frac{2}{3} x$

Divide both sides by 2/3.

$x=19.05$

Now we know the length of AY (x). To find the length of OY substitute this value of x into 1/3x, which represents OY.

$\frac{1}{3} (19.05)$

This gives us 6.35, which is the length of OY.

The final answers are:

OY = 6.35 m
AY = 19.05 m

3 0

3 years ago