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kari74 [83]
3 years ago
11

Find the median of puppies 2 , 2 , 6 , 7 , 9 , 11 , 14

Mathematics
2 answers:
kondaur [170]3 years ago
7 0

Answer:

7

Step-by-step explanation:

Verizon [17]3 years ago
4 0

Answer:

median is 7

Step-by-step explanation:

Median means you are finding the middle number in the data set.

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Find k, the constant of proportionality, for the data in this table. Then write an equation for the relationship.
VashaNatasha [74]

Answer:

k=\frac{32}{5},  y=\frac{32}{5}x

k=6.4, y=6.4x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

Find the value of the constant of proportionality k

take any ordered pair from the data

For x=25, y=160

k=\frac{y}{x}

substitute the values of x and y

k=\frac{160}{25}

simplify

k=\frac{32}{5}

The linear equation is equal to

y=\frac{32}{5}x

or

y=6.4x

7 0
3 years ago
Calculate the average speed of the car in m/s
Alina [70]

Answer:

14.4 m/s

Step-by-step explanation:

The speed of the car can be found by dividing the distance by the time. The distance is 0.8m 9 times or 0.8(9)=7.2 meters and the time is 0.5 seconds

s=\frac{d}{t} \\s=\frac{7.2}{0.5} \\s=14.4

3 0
3 years ago
2. When Joey dives off a diving board, the equation of his pathway can be modeled by h = -16- + 15 + 12.
Sergeu [11.5K]

Answer:

a) The maximum height is approx 15.5 unit.

b) The time it will take for Joey to reach the water is 1.45 hour.

Step-by-step explanation:

Given : When Joey dives off a diving board, the equation of his pathway can be modeled by h(t)= -16t^2+15t + 12

To find : a) Find Joey's maximum height.

b) Find the time it will take for Joey to reach the water.

Solution :

Modeled  h(t)= -16t^2+15t + 12 ....(1)

a) To find maximum height

Derivate (1) w.r.t. t,

h'= -32t+15

For critical point put h'=0,

-32t+15=0

t=\frac{15}{32}

t=0.46875

Derivate again w.r.t. t,

h''= -32

It is maximum at t=0.46875.

Substitute t in equation (1),

h(0.46875)= -16(0.46875)^2+15(0.46875)+12

h(0.46875)= -3.515625+7.03125+12

h(0.46875)= 15.515625

The maximum height is approx 15.5 unit.

b) To find the time it will take for Joey to reach the water.

Put h=0 in equation (1),

-16t^2+15t + 12=0

Apply quadratic formula, x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

Here, a=-16 , b=15, c=12

t=\frac{-15\pm\sqrt{(15)^2-4(-16)(12)}}{2(-16)}

t=\frac{-15\pm\sqrt{225+768}}{-32}

t=\frac{-15\pm\sqrt{993}}{-32}

t=\frac{-15+\sqrt{993}}{-32},\frac{-15-\sqrt{993}}{-32}

t=−0.515,1.453

Reject negative value.

The time is t=1.45.

The time it will take for Joey to reach the water is 1.45 hour.

5 0
3 years ago
Which function is graphed?
hoa [83]

Answer:

I can't see the graph

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through the point (1, 3) and is perpendicular to the line 2x+3y=15?
WARRIOR [948]

Answer:

<h2>y = -3/2x + 9/2</h2>

Step-by-step explanation:

first let's convert the equation to y=2/3x+5

since the line is perpendicular we know that m=-3/2=1.5. now we just need to plug these numbers into an equation.

3=(-1.5)1+b

multiply.

3=-1.5+b

now add 1.5 to both sides of the equation.

4.5=b

change that into a fraction.

9/2.

now using 9/2 as b and -3/2 as m we have our equation:

<h2><u>y = -3/2x + 9/2.</u></h2>
5 0
3 years ago
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