All categories

3 years ago

How do I show variance in an equation for example if lets say the margin of error is .3 how do I express that in an expression?

Mathematics

1 answer:

Vera_Pavlovna [14]3 years ago

5 0

What you did is perfect! Great job :)

You might be interested in

Combine like terms to create an equivalent expression. 17−3(37n−27)71 −3( 73 n− 72)

patriot [66]

Answer:

$\frac{1}{7}-3(\frac{3}{7}n-\frac{2}{7})=1-\frac{9}{7}n$

Step-by-step explanation:

Given : Expression $\frac{1}{7}-3(\frac{3}{7}n-\frac{2}{7})$

To find : Combine like terms to create an equivalent expression ?

Solution :

Step 1 - Write the expression,

$\frac{1}{7}-3(\frac{3}{7}n-\frac{2}{7})$

Step 2 - Apply distributive property, $a(b+c)=ab+ac$

$=\frac{1}{7}-3\times \frac{3}{7}n+3\times \frac{2}{7}$

$=\frac{1}{7}-\frac{9}{7}n+\frac{6}{7}$

Step 3 - Combine like terms,

$=\frac{1}{7}+\frac{6}{7}-\frac{9}{7}n$

$=\frac{1+6}{7}-\frac{9}{7}n$

$=\frac{7}{7}-\frac{9}{7}n$

$=1-\frac{9}{7}n$

Therefore, $\frac{1}{7}-3(\frac{3}{7}n-\frac{2}{7})=1-\frac{9}{7}n$

4 0

3 years ago

Read 2 more answers

A 33 gram sample of a substance that's

Mazyrski [523]

9514 1404 393

Answer:

6.2

Step-by-step explanation:

We presume your "k-value" is the k in the exponential decay term ...

e^(-kt) . . . where t is the number of time units

This is 1/2 when ...

ln(1/2) = -kt

t = ln(1/2)/(-k) = ln(2)/k

t = 0.69315/0.1124 ≈ 6.2

The half life is about 6.2 time units.

6 0

2 years ago

Which algebraic expression is equivalent to the expression below? 2(3 + 5x) + 24 A. 10x - 30 B. 10x + 18 C. 5x + 30 D. 10x + 30

tekilochka [14]

Answer:

10x +30

Step-by-step explanation:

2(3 + 5x) + 24

Distribute

2*3 + 2*5x+24

6+10x+24

Combine like terms

10x +30

6 0

2 years ago

Which expression is equivalent to -3(2m-1) -n? 6m-n-3 6m-n+3 -6m-n-3 -6m-n+3

kirill115 [55]

ghjjkkiihccukckugcugcliyfyi

5 0

2 years ago

If you read 50 pages a night 3 times a week of a book that is 132 pages long, how many days would it take to complete the book?

yarga [219]

Answer:

1 day

Step-by-step explanation:

50 x 3 = 150 pages a week

6 0

3 years ago