8. Explain why 30+1 = 6 is the same as 30 -/-/--/-X-X = 0. What is
the value of x in this example?

Answer:

Im sorry im confusded

Step-by-step explanation:

Answer:

The answer is 4 trust me i'm in high school.

Step-by-step explanation:

Plzz mark brainliest

Answer:

B.$50; The portfolio will be at its maximum after about 13 months

Answer:

65/100

Step-by-step explanation:

Answer:

7 1/2

Step-by-step explanation:

10 - 2 1/2 = 7 1/2

Subtract

Answer:

x+2

1

2

=10

Step 1: Simplify both sides of the equation.

x+

5

2

=10

Step 2: Subtract 5/2 from both sides.

x+

5

2

−

5

2

=10−

5

2

x=

15

2

Answer:

x=7 1/2

Step-by-step explanation:

Answer:

:) here

Step-by-step explanation:

1) 40

2) 4 x 12=48

3) 3x11=33

1. 5(6 + 2)

= 5(6) + 5(2)

= 30 + 10

= 40

2. 4(7 + 2 + 3)

= 4(7) + 4(2) + 4(3)

= 28 + 8 + 12

= 48

3. 3(7 + 4)

= 3(7) + 3(4)

= 21 + 12

= 33

Answer:733.8 dollars in profit

Step-by-step explanation:

hope this helps :)

Answer:

I believe that the answer is A. 76,415.04 cubic feet

Step-by-step explanation:

I used a formula I found online

Hope this helps

Answer:

2/7

Step-by-step explanation:

Answer:

A=120

Step-by-step explanation:

I havent had to do this in a while but i hope this is correct

Answer:

120

Step-by-step explanation:

hope this helps

brainliest pls

Answer:

The correct answer is B. 300+500+50+20+6+9.

HOPE THIS HELPED YOU :)

If this helped pls mark Brainliest

Answer:

Is there more to the question

Step-by-step explanation:

Answer: it will take 4 months for the amount to be the same and the amount would be $95

Step-by-step explanation:

Let x represent the number if months it will take for the two accounts have the same amount of money.

Christiana opened her account with $55 and plans to deposit $10 every month. This means that the amount that in the account after x months would be

10x + 55

Marlena opened her account with $35 and plans to deposit $15 every month. This means that the amount that in the account after x months would be

15x + 35

For the amount in the accounts to be the same, the number of months would be

15x + 35 = 10x + 55

15x - 10x = 55 - 35

5x = 20

x = 20/5

x = 4

The amount would be

15 × 4 + 35

= 60 + 35

= $95

Answer:

40% is what i think it is

Answer:

1/16

Step-by-step explanation:

The equation of a direct proportion is

y = kx

Let amount of fertilizer = y and amount of peat moss = x

We have x = 12 when y = 3/4

3/4 = k * 12

k = (3/4)/12 = 3/4 * 1/12 = 3/48 = 1/16

y = 1/16 x

The constant of proportionality is 1/16.

Answer:

penis

Step-by-step explanation:

Answer:

$2

Step-by-step explanation:

The formula for simple interest is i = p*r*t, where r is the annual interest rate expressed as a decimal fraction.  Here the principal is $40 and the elapsed time is 1 year.  The amount of interest collectible after 1 year is thus:

i = ($40)(0.05)(1) = $2

Answer:

$2

Step-by-step explanation:

Answer: In random sampling, the whole population should have an equal chance of being chosen.

Step-by-step explanation:

In a simple random sample, every member of the population has an equal chance of being selected.

Your sampling frame should include the whole population. To conduct this type of sampling, you can use tools like random number generators or other techniques that are based entirely on chance.

Biased sample

A sample is biased if individuals or groups from the population are not represented in the sample.

In statistics, sampling bias is a bias in which a sample is collected in such a way that some members of the intended population have a lower or higher sampling probability than others.

Affects

It affects the internal validity of an analysis by leading to inaccurate estimation of relationships between variables. It also can affect the external validity of an analysis because the results from a biased sample may not generalize to the population.

Sampling is one of the procedure to get information about population. The best way to choose a sample representing a population is simple random sampling.

We do sampling so that we don't have to work on entire population of items but only on that sample in a way that we can predict information about population.

Most of the times, it isn't possible in real world to work on entire populations. Samples come out for rescue by assumptions that they will have some properties of the population pertained in them.

Thus, the sample should be taken out such that it includes data of the population as much  as it can in unbiased way so as to imitate population. (assuming that we want the sample to contain the summary of the population).

If the sampling is done from the population randomly, without any other rule, then such sampling is called simple random sampling. Items are selected in a fixed size, all randomly.

Sampling which is done by taking the main population divided in categories(called strata), then such sampling from stratas (sub-parts of the population) is called stratified sampling.

In this type of sampling, starting of the sampling is done randomly, but then rest of the samples are collected by an order. Like for example, first point is selected randomly, then all points are selected that they are equidistant from each other in the population.

The word "convenience" summarizes this sampling. It is done in a way that those values from population are sampled which are in convenience with the researcher. Like if some random picking is to be done from beads spread on the ground, then the researcher picking those beads which are closer to him.

Convenience sampling and stratified sampling are biased, as convenience sampling is leaving a good amount of population untouched, and stratified sampling is taking about sub-parts of the population.

The systematic random sampling is not good in those cases where population doesn't contain variation equally, and we might end up doing systematic sampling in that region which is biased than other regions.

The best sampling is simple random sampling, as it is randomly picking data values from the population, so is most probable to get the properties of the population(the more you're lost, the more probable you're to get to new paths). If sample size is large enough, this sampling comes out as best sampling method, in context of summarizing the information of the population, as almost all of the properties of the population is covered by values obtained during simple random sampling.

Thus, the best way to choose a sample representing a population is simple random sampling. (assuming that we want to summarize the population).

Learn more about simple random sampling here:

https://brainly.com/question/25644040

Answer:

D

Step-by-step explanation:

hey there!

4p=16 our objective is to isolate the variable

step 1 divide each side by 4

4/4 cancels out

16/4=4

we're left with p=4 and only 4

therefore D is the correct answer

Answer:

61

Step-by-step explanation:

79 + 40 = 119

180 - 119 = 61

Answer:

(4y-8)=(79+y)

3y=87

y=29

Step-by-step explanation:

Answer:

I believe it is A.

i hope this helped

Answer:

Step-by-step explanation:

Prime factorize 27 , 45 and 18

[tex]-3\sqrt{27}-2\sqrt{2}-3\sqrt{45}-\sqrt{18}=-3\sqrt{3*3*3}-2\sqrt{2}-3\sqrt{3*3*5}-\sqrt{3*3*2}\\\\=-3*3\sqrt{3}-2\sqrt{2}-3*3\sqrt{5}-3\sqrt{2}\\\\=-9\sqrt{3}-2\sqrt{2}-9\sqrt{5}-3\sqrt{2}\\\\=-9\sqrt{3}-9\sqrt{5}-2\sqrt{2}-3\sqrt{2}\\\\=-9\sqrt{3}-9\sqrt{5} + (-2-3)\sqrt{2}\\\\=-9\sqrt{3}-9\sqrt{5} - 5\sqrt{2}[/tex]

Answer:

I think it's C

Step-by-step explanation:

A is go up one time

B is go down one time

C is... not sure what's going on there

And D is multiply by 8

I'm confused.

Answer:

6 toppings

Step-by-step explanation:

Find how much the toppings cost in total without the medium pizza.

20 - 8 = 12

12 ÷ 2 = 6 toppings