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3 years ago

The results of 11 students in a test are:4,19,7,18,15,9,17,14,10,13,11. what is the median.

Mathematics

2 answers:

Yanka [14]3 years ago

7 0

Answer do 4 *11

Step-by-step explanation:

alexdok [17]3 years ago

7 0

The median score is the middle number . BUT you have to rewrite the numbers from least to greatest THEN cross out first number then last number and keep repeating until you are left with one number in the middle . If you are left with two numbers in the middle then add them and divide by two to get your middle number . So let’s do it :
4, 7, 9, 10, 11, 13, 14, 15, 17, 18, 19
Your answer is 13

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Find the value of y and simplify completely.

Anna [14]

Answer:

y = 8

x = 8√5

z = 4√5

Step-by-step explanation:

Using the formula (which is a geometric mean):

a y

---- = -----

x a

Where a is the altitude (y), x is a projection (16), and y is the other projection (4):

y 4

---- = -----

16 y

Cross multiply:

y² = 16 (4)

y² = 64

√y² = √64

y = 8

To find x and z, use the Pythagorean Theorem:

16² + y² = x²

256 + 8² = x²

256 + 64 = x²

320 = x²

√320 = √x²

√64√5 = √x²

8√5 = x

x = 8√5

4² + y² = z²

16 + 64 = z²

80 = z²

√80 = √z²

√16√5 = √z²

4√5 = z

z = 4√5

5 0

3 years ago

What is the length of side s of the square shown below?

JulijaS [17]

Answer:

Step-by-step explanation:

in a 30,60,90 triangle the longer leg is rt3 times the value of the shorter leg and the hypotenuse is 2 times greater than the shorter leg.

8 0

3 years ago

A stadium has 122 seats and 1 1 rowsx how many seats are there per row?

miss Akunina [59]

Unfortunately, this info does not produce a "nice" result; 122 divided by 11 comes out to 11 rows plus one seat either in a row by itself or not: 1

122 seats

--------------- = 11 rows plus 1 seat left over

11 rows

5 0

3 years ago

ol McDonald would like to build a pin for his favorite pig horse and cow he needs to enclose a rectangular plot of land into thr

garri49 [273]

The area of the pen is the products of its dimensions

The dimension of the pen is 300 by 120 feet
The maximum area of the pen is 36000 square feet.

Let the dimension of the fence be x by y.

So, we have:

$\mathbf{2x + 5y = 1200}$ --- perimeter

$\mathbf{Area =xy}$ -- area

Subtract 5y from both sides of $\mathbf{2x + 5y = 1200}$

$\mathbf{2x = 1200 - 5y}$

Divide both sides by 2

$\mathbf{x = \frac{1200 - 5y}{2}}$

Substitute $\mathbf{x = \frac{1200 - 5y}{2}}$ in $\mathbf{Area =xy}$

$\mathbf{Area = \frac{1200 - 5y}{2} \times y}$

$\mathbf{Area = \frac{1200y - 5y^2}{2}}$

Split

$\mathbf{Area = 600y - \frac{5}{2}y^2}$

Differentiate

$\mathbf{A' = 600 -5y}$

Set to 0

$\mathbf{600 -5y = 0}$

Add 5y to both sides

$\mathbf{5y = 600}$

Divide both sides by 5

$\mathbf{y = 120}$

Substitute $\mathbf{y = 120}$ in $\mathbf{x = \frac{1200 - 5y}{2}}$

$\mathbf{x = \frac{1200 - 5 \times 120}{2}}$

$\mathbf{x = \frac{1200 - 600}{2}}$

$\mathbf{x = \frac{600}{2}}$

$\mathbf{x = 300}$

Recall that:

$\mathbf{Area =xy}$

So, we have:

$\mathbf{Area = 300 \times 120}$

$\mathbf{Area = 36000}$

Hence, the maximum area of the pen is 36000 square feet.

The results of 11 students in a test are:4,19,7,18,15,9,17,14,10,13,11. what is the median.​

The results of 11 students in a test are:4,19,7,18,15,9,17,14,10,13,11. what is the median.