1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Law Incorporation [45]
3 years ago
8

At the beginning of the year, Adrian's savings account balance was $28. Each week, he deposits another $15 into that account, an

d he doesn't spend any of his savings.
Is his savings account balance proportional to the number of weeks since the start of the year?
Mathematics
2 answers:
Daniel [21]3 years ago
7 0

Answer:

Account balance is not proportional to the number of weeks.

Step-by-step explanation:

Initially Adrian's saving account balance was = $28

He deposits $15 in his account each week.

If we denote week with a variable 'x' then after 'x' weeks total amount in is account = $15x

So, total amount in his account after 'x' week will be;

y = 15x + 28

It's a linear equation representing total amount after 'x' weeks with a constant growth rate of 15 and initial amount 28.

In other words equation is in the form of y = mx +b.

This equation doesn't show the proportional relation because equation in the form of y = kx represents the relation of proportionality only.

kondor19780726 [428]3 years ago
6 0

Answer:

No

Step-by-step explanation:

No need because its too much to read xD

You might be interested in
How do I find the median for a congruent triangle
Andrej [43]
The length of a median is equal to half the square root of the difference of twice the sum of the squares of the two sides of the triangle that include the vertex the mediam is drawn from and the square of the side of the triangle the median is drawn to.

triangle sides by a, b, c.

ma=122c2+2b2−a2

mb=122c2+2a2−b2

mc=122a2+2b2−c2

3 0
3 years ago
Write the y-intercept of the graph of -6x + y = 8.
Contact [7]

Answer:

8

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Manny and Evan were flying paper airplanes. Manny’s airplane flew 36.5 centimeters and Evan’s airplane flew 18 centimeters. How
professor190 [17]
First subtract manny value 36.5 from Evan values 18 which will give u 18.5 cm which then u have to convert. Since 1 cm is about .4, we can multiply 18.5 by .4 to get the answer 7.4 inches
7 0
3 years ago
Read 2 more answers
If 800g of a radioactive substance are present initially and 8 years later only 450g remain, how much of the substance will be p
artcher [175]

A=Pe^(rt)

P = 800g

t = 8 years

A = 450g

r = This is what we will try and find to start with

450=800e^(r*8)

After running the math through a calculator, we end with r = -0.07192

Now we just re-input this information into our equation: A=800e^(-0.07192*16)

A=800e^(1.15072)

Now we will re-write the equation using the negative exponent rule:

A = 800 1/e^1.15072

Combine right side:

A = 800/e^1.15072

Then do the math:

A = 253.12709836......

That will give us A = 253 (rounded to the whole number)

I hope this helps! :)

5 0
3 years ago
A bag contains blue and yellow marbles. Two marbles are drawn without replacement. The probability of selecting a blue marble an
igomit [66]
Let b = blue marbles
y = yellow marbles
 Sum = b+y
 The <span>chance of a blue marble being drawn first is:
b / (b+y) = 0.55 
</span>The <span>chance of a blue marble being drawn first then a yellow next is:
</span>b / (b+y) * <span>y / (b+y-1) = 0.37</span>
This can be solve easily by using a theorem of Bayes 
0.37/0.55 = .67 or 67%
4 0
3 years ago
Other questions:
  • Please, help me with question number 9, I am so confused.
    5·1 answer
  • A solid with two parallel bases cannot be which of the following?
    12·1 answer
  • What is the answer to the problem i need help with?
    13·1 answer
  • WEEK 8 DISCUSSION 250 words in word file so i can copy
    8·1 answer
  • -11 2/3 * (-4 1/5)=
    14·2 answers
  • What is the area of the following circle <br> R=7
    13·2 answers
  • What set of reflections would carry triangle ABC onto itself?
    6·1 answer
  • A line passes through the points (-23, -22) and (-17, -22). What is the slope of the line
    8·1 answer
  • PLzzz help this is due in 20mins. The standard recipe for Hershey's chocolate is 3 cups cocoa and 2 cups milk. If Hershey's deci
    9·2 answers
  • PLS HELP ASAP
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!