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2 years ago

Ebony's bạnk balance first reached $400 on Day 4. The last day her balance was $400 was Day 8.

Mathematics

1 answer:

Ksju [112]2 years ago

3 0

Answer:

thanks for the points bye bye man thanks for the points bye bye man.

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What value of x makes the following equation true?<br> 15+3x=3(2−2x)

Alinara [238K]

Answer:

$\boxed {x = -1}$

Step-by-step explanation:

Solve for the value of $x$ :

$15 + 3x = 3(2 - 2x)$

-Use <u>Distributive Property</u>:

$15 + 3x = 3(2 - 2x)$

$15 + 3x = 6 - 6x$

-Take $6x$ and add it to $3x$ :

$15 + 3x + 6x = 6 + 6x - 6x$

$15 + 9x = 6$

-Subtract both sides by $15$ :

$15 - 15 + 9x = 6 - 15$

$9x = -9$

-Divide both sides by $9$ :

$\frac{9x}{9} = \frac{-9}{9}$

$\boxed {x = -1}$

Therefore, the value of $x$ is $-1$ .

5 0

3 years ago

What is the recursive rule for the sequence an=5(-2)n-1

Lana71 [14]

Multiplying an odd number of negative factors equals a negative

-5* 2n -1

Calculate the product

the answer is -10n - 1

4 0

3 years ago

For a sample of n = 36 that has a sample variance of 1,296, what is the estimated standard error for the sample? 6 37 36 6. 9

Liula [17]

The estimated standard error for the sample is 6

Given,

Sample size, n = 36

Sample variance, $s^{2}$ = 1296

Standard deviation, s = √1296

= 36

Standard error, SE = $\frac{s}{\sqrt{n} }$

= $\frac{36}{\sqrt{36} }$

= $\frac{36}{6}$

= 6

Concept

Sample size is the number of participants or observations included in a study. It is denoted by ‘n’

Sample variance is a measure of the degree to which the numbers in a list are spread out. It is denoted by ' $s^{2}$ '

Standard deviation is a measure of how dispersed the data is in relation to the mean. It is denoted by ‘s’

Learn more about standard deviation here:brainly.com/question/13905583

#SPJ4

4 0

11 months ago

good evening! Can someone please answer this, ill give you brainliest and your earning 50 points. Would be very appreciated.

Sphinxa [80]

Answer:

From inspection of the diagram, the pattern is:

Step 1: 1² + 1

Step 2: 2² + 2

Step 3: 3² + 3

Let x = step number

Let y = total number of squares

Therefore, the equation that represents the relationship is:

y = x² + x

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x² relates to the large square made up of small squares (top part of the image of each step)

x relates to the rectangle of small squares (bottom part of the image of each step)

y is the total number of small squares in the image of each step.

4 0

2 years ago

Read 2 more answers

the volume is 50.24 cubic inches and has a radius of 4 inches. What is the height? Use 3.14 for pie.

Dmitrij [34]

Volume = (1/3)(pi)(r^2)(h)
= (1/3)*3.14*(4^2)(h)
= 16.747h

volume / 16.747 = height = 50.24/16.747 = 3

8 0

3 years ago