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gulaghasi [49]
4 years ago
15

Jackson and Maria each earned 20 dollars for doing chores around the house. They continue to do chores. Jackson earned $3 per da

y and Maria earned $6 per day. At the end of 5 days, how much more money will Maria have earned than Jackson.
Mathematics
2 answers:
Digiron [165]4 years ago
8 0
$15 because the equation would be....
Jackson: y=3x+20
Maria: y=6x+20
So if you input 5 into the x's, Maria would get 50 and Jackson would get 35. When you subtract 50-35, it equals 15!
Sonbull [250]4 years ago
8 0
First, to find out how much Jackson earned at the end of 5 days, multiply $3 x 5.

$3 x 5 = $15

Jackson earned $15 at the end of 5 days.

Next, to find out how much Maria earned at the end of 5 days, multiply $6 x 5.

$6 x 5 = $30.

Maria earned $30 at the end of 5 days.

To find the difference in how much they earned, simply subtract the two values.

$30 - $15 = $5

So, finally:

Maria earned $5 more than Jackson at the end of 5 days.
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Answer:

  C

Step-by-step explanation:

A and B are wrong and with D they wouldn't be lines so imma go with C.

Sorry if it's wrong.

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I want to know what is 4/8+8/2=
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Answer:

9/2

Step-by-step explanation:

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3 years ago
Carolina, with the intention of investing money in real estate, acquired a plot of land for R$ 350,000.00. Over four years, the
Bas_tet [7]

At the end of the analyzed period this plot of land will have the value as given by: Option D: 420,506.24

<h3>What is appreciation and deprecation?</h3>

Deprecation, also called devaluation, is the decrement in price of an asset. Appreciation is opposite of deprecation. This indicates increment in the price of the considered thing.

<h3>How to find the percentage from the total value?</h3>

Suppose the value of which a thing is expressed in percentage is "a'

Suppose the percent that considered thing is of "a" is b%

Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).

Thus, that thing in number is

\dfrac{a}{100} \times b

It is given that:

  • Initial price of the plot of land = $350,000
  • First year: 12% appreciation
  • Second year: 10% appreciation
  • Third year: 8% devaluation
  • Fourth year: 6% appreciation

Now, consider appreciation of an amount A by P%.

Then, we have:

Increased price = Initial price + P% of initial price

Increased price = A + \dfrac{A}{100} \times P = A \times \left(1 + \dfrac{P}{100} \right)

Similarly, depreciated price by P% of an amount A is:

Decreased price = A - \dfrac{A}{100} \times P = A \times \left(1 - \dfrac{P}{100} \right)

We've got: A = 350,000

After 1st year, which had 12% appreciation, we get:

A_1 =A(1 + 12/100) = A(1.12)\\
After 2nd year, 10% appreciation we get:

A_2 =A_1(1 + 10/100) = A_1(1.1) = A(1.12)(1.1)\\

After 3rd year, which had 8% devaluation effect on the price, we get:

A_3 = A_2(1 - 8/100) = A_2(1-0.08) = A_2(0.92) = A(1.12)(1.1)(0.92)

After 4th year,  which had 6% appreciation effect on the price, we get:A_4 = A_3(1 + 6/100) = A_4(1+0.06) = A_3(1.06) = A(1.12)(1.1)(0.92)(1.06)

Thus, the final effect on A is:

A \rightarrow A(1.12)(1.1)(0.92)(1.06) = A(1.2014464)\\\$350,000 \rightarrow 350000(1.2014464) = 420506.24\: \rm dollars

Thus, at the end of the analyzed period this plot of land will have the value as given by: Option D: 420,506.24

Learn more about percent here:

brainly.com/question/11549320

#SPJ1

4 0
3 years ago
PLSS HELP ME I NEED IT ASAPP TYSM ILY
Hatshy [7]

Answers:

  • He needs <u>   310   </u> grams of the 99% cocoa brand
  • He needs <u>    590    </u>grams of the 70% cocoa brand

======================================================

Explanation:

Let's label the two brands of chocolate as A and B

  • Brand A is 99% cocoa
  • Brand B is 70% cocoa

Furthermore, define these variables

  • x = amount of brand A
  • y = amount of brand B

The amounts are in grams.

The two amounts must add to 900 grams, so x+y = 900. This can be solved to y = 900-x which we'll use later.

Since we have x grams of brand A, and brand A has 99% cocoa, this means 0.99x represents the amount of pure cocoa from brand A.

Similarly, brand B contributes another 0.70y grams of pure cocoa

Overall, we're dealing with 0.99x+0.70y grams of pure cocoa from the two brands mixed together.

---------------

Rolf needs 900 grams of final product. He wants it to be 80% cocoa, which means 80% of the 900 is going to be pure cocoa

80% of 900 = 0.80*900 = 720

Rolf wants 720 grams of pure cocoa after mixing the two brands together.

So this leads to the second equation: 0.99x+0.70y = 720

---------------

Let's apply substitution to replace y with 900-x

0.99x+0.70y = 720

0.99x+0.70( y ) = 720

0.99x + 0.70( 900-x ) = 720

At this point, we have a single variable in which we can isolate x fully.

0.99x + 0.70( 900-x ) = 720

0.99x + 0.70( 900) + 0.70(-x) = 720

0.99x + 630 - 0.70x = 720

0.29x = 720-630

0.29x = 90

x = 90/(0.29)

x = 310.344827586 which is approximate

Rounding to the nearest full gram, we get x = 310

Use this x value to find y

y = 900-x

y = 900-310.344827586

y = 589.655172414 which is also approximate

y = 590 when rounding to the nearest whole number

---------------

In summary, we have

  • x = 310
  • y = 590

Meaning that Rolf will need <u>310 grams</u> of brand A to mix with <u>590 grams</u> of brand B.

If we plugged those values into x+y = 900, then that equation works out.

If we tried the second equation, then,

0.99x+0.70y = 720

0.99*310+0.70*590 = 720

719.9 = 720

The slight discrepancy is due to the fact we rounded those approximate x and y values to the nearest whole number. We would get better accuracy if we rounded to say the nearest tenth or hundredth.

8 0
2 years ago
Help help help help​
Allushta [10]

Answer:

why you color out the first part? what exctly is the question?

Step-by-step explanation:

6 0
4 years ago
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