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3 years ago

5(8k + 9m) simplified expression

Mathematics

1 answer:

Firdavs [7]3 years ago

8 0

Answer:

40k+45m

Step-by-step explanation:

5(8k)=40k + 5(9m)= 45m

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Select the correct answer. What is the difference of the values of the two variables in this system of equations? Y = 2x + 1 x +

zzz [600]

Answer:

Option C. $2$

Step-by-step explanation:

we have

$y=2x+1$ -----> equation A

$x+3y=10$ -----> equation B

Solve the system of equations by graphing

Remember that the solution of the system of equations is the intersection point both graphs

The intersection point is (1,3)

see the attached figure

therefore

The solution of the system of equations is

$x=1,y=3$

Find the difference

$y-x=3-1=2$

8 0

4 years ago

QUESTION 3 of 10: Stock returns vary from year to year. The more variance a stock displays the greater the potential risk. These

Dahasolnce [82]

Answer:

The variance of these investment returns is 74

Step-by-step explanation:

Given:

Series = 10, 30, 15, 5, 20

To Find:

variance of a series = ?

Solution:

The variance of the series = $Var\left(X\right)=\sum _{i=1}^n\frac{\left(x_i-\bar{x}\right)^2}{n}$

$\bar{x} = \frac{10+30 +5+15 + 20}{5}$

$\bar{x} = \frac{80}{5}$

$\bar{x} =16$

Now $(x_i -\bar{x})^2 =$ $(10 -16)^2 + (30 -16)^2 + (5 -16)^2 +(15 -16)^2 +(20 -16)^2$

= $(-6)^2 + (14)^2 + (-11)^2 + (-1)^2+ (-4)^2$

= 36 + 196 +121 + 1+ 16

= 370

Now

$Var\left(X\right)=\frac{370}{5}$ = 74

6 0

3 years ago

Read 2 more answers

Each day that a library book is kept past its due date, a $0.30 fee is charged at midnight. Which ordered pair is a viable solut

Tom [10]

Answer:

x + $0.30 = y

Step-by-step explanation:

hope this helps!

4 0

3 years ago

Read 2 more answers

In a track field competition, A discus has a radius of 11 centimeters. What is the circumference, I centimeters, of the discus?

Morgarella [4.7K]

Given the radius of the discus used in the track field competition, the circumference of the discus is 69.08cm.

<h3>What is the circumference of the discus?</h3>

Note that; a circumference is the perimeter of a circle or ellipse.

It is expressed as C = 2πr

Where r is the radius and π is the constant pi ( π = 3.14 )

Given that;

Radius of the discus r = 11cm
Circumference C = ?

C = 2πr

C = 2 × 3.14 × 11cm

C = 69.08cm

Therefore, given the radius of the discus used in the track field competition, the circumference of the discus is 69.08cm.

Learn more about circumference and area circles here: brainly.com/question/11952845

#SPJ1

3 0

2 years ago

Simplify this expression 16+28÷2-6/10-4*2

CaHeK987 [17]

Answer:

Step-by-step explanation:

16+14-6/10-8

30-6/2

24/2

5 0

4 years ago

Read 2 more answers