All categories

3 years ago

Th sum of a number and two is equal to eight The equation?

Mathematics

2 answers:

11111nata11111 [884]3 years ago

8 0

Answer:

<h3>Let the number be n. </h3>

According to question,

2+ n =8

=) n = 8-2

=) n =6

hope you understand.

Luba_88 [7]3 years ago

4 0

Answer:

2+n = 8

Step-by-step explanation:

2+ something must equal 8.

8 minus 2 = 6

n=6

You might be interested in

A piece of wire 2/5 m long is to be cut into six pieces of the same length what is the length of each piece

bonufazy [111]

Answer:

each peice will be 1/15 m long.

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Meg is starting a day-care center for the people in her community. She decided to charge $25 per day per child, out of which $5

attashe74 [19]

If I figured correctly it is 5 kids. Sorry if wrong!

6 0

3 years ago

Read 2 more answers

A chicken can run at a top seed of 9 miles per hour find the top speed of a chicken in miles per minute round to the nearest ten

photoshop1234 [79]

The answer would be o.15 miles per hour.

8 0

3 years ago

An electronic system has each of two different types of components in joint operation. Let X and Y denote the lengths of life, i

AURORKA [14]

Answer:

The average cost is $E(C) = 66$

The standard deviation of cost is $\sigma = 9.798$

Step-by-step explanation:

From the question we are told that

$E(X) = 4$

$E(Y) = 2$

$E(X^2) = 24$

$E(Y^2) = 8$

The cost of replacing the two component is C = 50 + 2 X + 4 Y

The variance of X is mathematically represented as

V(X) = $E(X^2) - [E(X)]^2$

Substituting values

$V[X] = 24 - 4^2$

$V[X] =8$

The variance of Y is mathematically represented as

V(Y) = $E(Y^2) - [E(Y)]^2$

Substituting values

$V[Y] = 8 - 2^2$

$V[X] =4$

The average of replacing the two component is

$E(C) = 2 * E(X) + 4* E(Y)$

substituting value

$E(C) = 50 + 2 * (4) + 4* (2)$

$E(C) = 66$

The variance of replacing the two component is

$V(C) = V(50 + 2X +4Y)$ Note: The variance of constant is zero

and X and Y are independent

=> $V(C) = 2^2 * V(X) + 4^2 * V(Y)$

substituting values

=> $V(C) = 4 * 8 + 16 * 4$

=> $V(C) = 32 + 64$

=> $V(C) = 96$

The standard deviation is

$\sigma = \sqrt{V(C)}$

substituting values

$\sigma = \sqrt{96}$

$\sigma = 9.798$

6 0

2 years ago

How to graph y=log3(x+3) and what is its Asymptote, Domain, and Range

Anastaziya [24]

Answer:

9 ans the ragen to all of them

Step-by-step explanation:

3 0

3 years ago