All categories

2 years ago

The area of a billboard sign is represented by (x+12)^2 square feet. Find the product

Mathematics

1 answer:

QveST [7]2 years ago

6 0

(x+12)^2=(x+12)(x+12) = x^2 +12x + 12x + 144
= x^2+24x+144

You might be interested in

Craig had p coins. Then he found 66 more coins in a drawer. Write an expression that shows how many coins Craig has now.

Elena L [17]

Craig had p coins. Then he found 66 more coins in a drawer. Write an expression that shows how many coins Craig has now.

p+ 66

5 0

3 years ago

In the isosceles trapezoid, m∠S=68∘ .<br><br> What is m∠Q ?

zmey [24]

9514 1404 393

Answer:

112°

Step-by-step explanation:

Same-side angles of a trapezoid are supplementary.

m∠P = 180° - m∠S = 180° -68° = 112°

The angles of an isosceles trapezoid match their symmetrical counterparts.

m∠Q = m∠P

m∠Q = 112°

5 0

3 years ago

Plz help this is variable and algebraic expressions

Blizzard [7]

Answer:

1.) D

2.) B

3.)

a.) 7x-34

b.) x (division symbol) 45 + 6

4.)

a.) x decreased by 216

b.) the quotient of 15 and x

4 0

3 years ago

What is the center of the circle??

solniwko [45]

Answer:

use a ruler stupid duhhhh!11

Step-by-step explanation:

4 0

2 years ago

Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for t

rjkz [21]

Answer:

COV (all stocks) = 0.55

COV (stocks and bonds) = 0.82

Step-by-step explanation:

Coefficient of Variation is used to measure variability.

It is defined as the ration of standard deviation and the mean.

It can be used to compare variability of two population or two samples.

Formula:

$\text{Coefficient of Variation} = \displaystyle\frac{\text{Standard Deviation}}{\text{Mean}}$

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

x: 14, 0, 39, 25, 32, 27, 28, 14, 14, 15

$Mean = \frac{208}{10} = 20.8$

$Standard~Deviation = \sqrt{\frac{1169.6}{9} } = 11.39$

$Coefficient~of~Variation = \frac{11.39}{20.8} = 0.55$

y = 6, 2, 29, 17, 26, 17, 17, 2, 3, 5

$Mean = \frac{124}{10} = 12.4$

$Standard~Deviation = \sqrt{\frac{924.4}{9} } = 10.13$

$Coefficient~of~Variation = \frac{10.13}{12.4} = 0.82%$

Since coefficient of variation of x is less compared to y, thus it could be said bonds does not reduce overall risk of an investment portfolio.

6 0

2 years ago