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garri49 [273]
3 years ago
10

Garland put 2b+ 3 dollars in the bank in the first week. The following week he doubled the first week’s savings and put that amo

unt in the bank. The next week he doubled what was in the bank. If he now has $477 in Thebes bank, how much did he put in the bank the first week?
Mathematics
1 answer:
alexgriva [62]3 years ago
7 0
1st week: 2b + 3
2nd week: 2(2b + 3) = 4b + 6
3rd week: 2(4b + 6) = 8b + 12
If 8b + 12 is $477, $477 - 12 must be 8b. $477 - 12 = $465 / 8 = $58.125 / .13
2b + 3 = 2 x 58.13 + 3 = $116.26 + 3 =
$119.26 is your answer

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The sum of four times a number and five times another number is -28. The sum of nine times the first number and two times the se
Rina8888 [55]

Answer:

<h2>3 and -8</h2>

Step-by-step explanation:

x,\ y-the\ numbers\\\\\text{The sum of four times a number and five times another number is -28:}\\\\4x+5y=-28\\\\\text{The sum of nine times the first number and two times the second number is 11:}\\\\9x+2y=11\\\\\text{We have the system of equations:}\\\\\left\{\begin{array}{ccc}4x+5y=-28&\text{multiply both sides by2}\\9x+2y=11&\text{multiply both sides by (-5)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}8x+10y=-56\\-45x-10y=-55\end{array}\right}\qquad\text{add both sides of the equation}

.\qquad-37x=-111\qquad\text{divide both sides by (-37)}\\.\qquad\qquad\boxed{x=3}\\\\\text{Put the value of x to the first equation:}\\\\4(3)+5y=-28\\12+5y=-28\qquad\text{subtrac 12 from both sides}\\5y=-40\qquad\text{divide both sides by 5}\\\boxed{y=-8}

3 0
3 years ago
Science help pls, thank you
djyliett [7]
Question 14 is B and C
Question 15 is D
Question 16 is A
And question 18 is B and D
5 0
4 years ago
City Tours rents bicycles for $10 an hour with a maximum daily fee of $100. Bicycles must be returned the same day they are rent
Vesna [10]

The domain of the function can be represented using set-builder notation as follows: {x | x is a positive integer}. The range of the function can be represented using inequality notation as follows: 0 ≤ y ≤ 100.

<h3>What are the domain and range of the function?</h3>

The domain of the function includes all possible x values of a function, and the range includes all possible y values of the function.

Part A:

Hours Cost

1  10

3  30

11  100

20  100

Part B:

The domain of the function that represents the cost of renting a bicycle is the set of all possible values of the number of hours the bicycle is rented for. In this case, the domain is the set of all positive integers, because the bicycles must be returned the same day they are rented.

The range of the function is the set of all possible values of the cost of renting the bicycle. In this case, the range is the set of all non-negative numbers less than or equal to 100, because the maximum daily fee is $100.

Part C:

The domain of the function can be represented using set-builder notation as follows:

{x | x is a positive integer}

The range of the function can be represented using inequality notation as follows:

0 ≤ y ≤ 100

Learn more about the domain and the range here:

brainly.com/question/21027387

#SPJ1

3 0
1 year ago
PLEASE HELP ASAP!!!!!!
-Dominant- [34]
It should be 4/5 ...
4 0
3 years ago
Read 2 more answers
3 = t + 11.5 - t
Ray Of Light [21]

Answer:

There are no solutions.

Step-by-step explanation:

3=t+11.5-t

3=11.5 (does not work)

8 0
3 years ago
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