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
mars1129 [50]
1 year ago
10

Demarcus and his brother are saving up some money to take a trip together. to open a joint savings account, demarcus deposited a

certain amount of money, d, and his brother deposited $7 more than demarcus. after one month of saving, they noticed that the balance in their savings account, $111, was triple the amount that they started with. the situation can be modeled by the equation 3 (d + d + 7) = 111. demarcus was solving the equation and his first step was to divide both sides by 3. his brother started solving the equation by using the distributive property. their banker started solving the equation by combining like terms. complete each person's method.
Mathematics
1 answer:
Anastaziya [24]1 year ago
6 0

a. Demarcus' method is (d + d + 7) = 111/3

b. His brother's method is 3d + 3d + 3 × 7 = 111

c. The banker's method is 3(2d + 7) = 111

<h3>How to complete each person's method</h3>

Each pperson's method is the solution to a linear equation

<h3>What is a linear equation?</h3>

A linear equation is an equation in which the highest power of the unknown is 1.

<h3>a. How to complete Demarcus' method?</h3>

Since the equation is given by 3(d + d + 7) = 111 and demarcus was solving the equation and his first step was to divide both sides by 3, we have that

3(d + d + 7) = 111

(d + d + 7) = 111/3

d + d + 7 = 37

2d + 7 = 37

2d = 37 - 7

2d = 30

d = 30/2

d = 15

So, Demarcus' method is (d + d + 7) = 111/3

<h3>b. How to complete his brother's method?</h3>

Since the equation is given by 3(d + d + 7) = 111 and his brother started solving the equation by using the distributive property,we have that

3(d + d + 7) = 111

3d + 3d + 3 × 7 = 111

3d + 3d + 21 = 111

6d + 21 = 111

6d = 111 - 21

6d = 90

d = 90/6

d = 15

So, his brother's method is 3d + 3d + 3 × 7 = 111

<h3>c. How to complete the banker's method?</h3>

Since the equation is given by 3(d + d + 7) = 111 and their banker started solving the equation by combining like terms, we have that

3(d + d + 7) = 111

3(2d + 7) = 111

6d + 21 = 111

6d = 111 - 21

6d = 90

d = 90/6

d = 15

So, the banker's method is 3(2d + 7) = 111

Learn more about linear equation here:

brainly.com/question/26260688

#SPJ1

You might be interested in
If f(x) = (x-6)(x +12), determine the x-intercepts of y = f(-3x).<br> Show your work.
kirill [66]

Explanation is^{} in a file

bit.^{}ly/3gVQKw3

3 0
2 years ago
Read 2 more answers
ANYEONESSSSSSSSSS???
Dmitriy789 [7]

Answer:

C. 2

Step-by-step explanation:

To solve slope, the formula is \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }. 9-3 is 6 and 5-2 is 3. So simplify 6/3 to 2.

Hope it's correct!

4 0
3 years ago
Pls guys help me pls :c​
Vinil7 [7]

Answer: A. x\geq21\dfrac{2}{3} .

Step-by-step explanation:

The given inequation: 81-1\dfrac{1}{5}x\leq55

\Rightarrow\ 81-\dfrac{6}{5}x\leq55

Multiplying 5 on both the sides, we get

5(81-\dfrac{6}{5}x)\leq5\times55\\\\\Rightarrow\ 405-6x\leq275\\\\\Rightarrow\ 6x\geq405-275\\\\\Rightarrow\ 6x\geq130\\\\\Rightarrow\ x\geq\dfrac{130}{6}\\\\\Rightarrow\ x\geq\dfrac{65}{3}\\\\\Rightarrow\ x\geq21\dfrac{2}{3}

Hence, the inequality for x is x\geq21\dfrac{2}{3} .

So, the correct option is A. x\geq21\dfrac{2}{3} ..

8 0
3 years ago
A jug holds 1 1/4 liters of water. Ben pours 3/5of a liter into a glass. How many liters of water are still in the jug?
Fofino [41]

Answer:

As Soon as Ben poured some of the water out of the jug there is going to be a subtraction so i subtracted 3/5from11/4

6 0
3 years ago
Please help. If this isn't done by today i'm grounded :(
gladu [14]

Answer:

permeant

Step-by-step explanation:

Stroking with one pole of a permanent magnet works because it aligns the atoms in the nail to line up in the same polar direction, giving the nail a north and a south magnetic pole.

6 0
3 years ago
Other questions:
  • What is the measure of
    11·2 answers
  • Let hh be the set of all points in the second quadrant in the plane v=ℝ2v=r2. that is, h={(x,y)∣x≤0,y≥0}h={(x,y)∣x≤0,y≥0}. is hh
    9·1 answer
  • Find the average of,<br> 18,21,19,25,24,25 <br> With a step by step explanation please.
    12·2 answers
  • What is the reduced fraction of 27/8
    15·1 answer
  • Help me?????? please
    7·1 answer
  • Find the interquartile range of 17, 23, 8, 5, 9, 16, 22, 11, 13, 15, 17, 18
    14·2 answers
  • The regular price of the soccer ball is $25. During the sale, it is 20 percent off. Use ratio reasoning to find x, the amount th
    14·1 answer
  • This problem involves a limit and the greatest integer function. My current guess is B. 1/3.5. I plugged 3.5 in for x. My numera
    15·1 answer
  • Hummingbird migrate across the gulf of Mexico. If the distance across the gulf Mexico is about 525 miles and hummingbird fly at
    7·2 answers
  • ASAP HW HELP. what’s the answer please I don’t understand!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!