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3 years ago

Please someone help me with this!

Mathematics

1 answer:

Olenka [21]3 years ago

3 0

Answer:

Please read the answer below.

Step-by-step explanation:

Question 2. 25% of what number is 30?

25% - Whole 30, 50% Whole 60, 75% Whole 90, 100% Whole 120

Question 3. What operation did you use the find the whole?

In the previous question, I found the whole, adding 30 to the previous value.

For example, I added 30 to 30 and calculate 60. To 60 then i added 30 to get 90 and added 30 to get 120 because in this question, all the 4 parts were exactly the same size (30).

Question 4. What are you multiplying/dividing? Do you use the percent or something else?

In the specific case of question 2, I noticed that the size of the parts were exactly the same, using it for calculating the whole. If 1 part out of 4 is 30, then 2 parts or 50% are 60, 3 parts or 75% are 90 and then 4 parts of 100% are the whole I'm being asked, in this case, 120.

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Solve the equation. 8x2 – 4 = 28

Flura [38]

Hello,

Your answer would be 2, -2.

$8x^2 - 4 = 28$

$8x^2-4+4=28+4$

$8x^2 = 32$

$\frac{8x^2}{8}= \frac{32}{8} 
$

$x^2 = 4$

x = +/4

x = 2 or x = -2

2 , -2 would be the answer! :)

Mark Brainliest if this helped you :)

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2 years ago

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Assume a population of 46, 51, 53, and 59. Assume that samples of size nequals=2 are randomly selected with replacement from th

Katarina [22]

Answer:

Step-by-step explanation:

There are four values 46, 51, 53, 59

we have to draw 2 sampler with replacement

sampler median samler median

46.46 46 53.46 49.5

46.51 48.5 53.51 52

45..53 49.5 53.53 53

46.59 52.5 53.59 56

51.46 48.5 59.46 52.5

51.51 51 59.51 55

51.53 52 59.53 56

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sampling distribution of the median

median probability

46 1/16

48.5 2/16

49.5 2/16

52.5 2/16

51 1/16

52 2/16

55 2/16

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6 0

3 years ago

Alberto’s monthly income is $3,200. Part of Alberto’s monthly budget is shown in the table.

Sladkaya [172]

Using the percentage concept, it is found that 40% of Alberto’s income is used to pay for his rent and groceries.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

$P = \frac{a}{b} \times 100\%$

In this problem:

Alberto’s monthly income is $3,200, hence b = 3200.

He spends 896 + 384 = $1280 in rent and groceries, hence a = 1280.

Then, the percentage is given by:

$P = \frac{1280}{3200} \times 100\% = 40\%$

More can be learned about the percentage concept at brainly.com/question/10491646

7 0

1 year ago

What is the answer. Please dont send me ‘links’. I seriously need help.

Agata [3.3K]

Answer:

Total Volume of composite figure = 635.2 cm³

Steps:

CV = h×3.14×(d/2)²

CV = 5×3.14(8/2)²

CV = 5×3.14(4)²

CV = 5×3.14×16

CV = 5×50.24

CV = 251.2 cm³

RV = h×w×l

RV = 4×8×12

RV = 4×96

RV = 384 cm³

TV = CV + RV

TV = 251.2 + 384

TV = 635.2 cm³

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2 years ago

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Kipish [7]

the Answer is -1 think

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2 years ago

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