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soldi70 [24.7K]
2 years ago
14

For the problem I see posted here already that reads - " A woman has two bank accounts. One contains $329 and awards 4% in inter

est each month. The other contains $921 and awards 7% in interest each month. What will the combined value of her two accounts be at the end of the month?" I see the answer but what formula did you use to solve this problem??????? It'll help me better understand. Thanks!
Mathematics
1 answer:
Naddik [55]2 years ago
7 0

Answer:

$1327.63

Step-by-step explanation:

:First, calculate the amount of interest that will be earned on the first account:

$329 * 0.04 = $13.16

Then, add this amount to the amount that was already in the account:

$13.16 + $329 = $342.16

Next, calculate the amount of interest that will be earned on the second account:

$921 * 0.07 = $64.47

Then, add this amount to the amount that was already in the account:

$64.47 + $921 = $985.47

Finally, add the two totals together: $342.16 + $985.47 = $1327.63.

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What is the solution to the equation? X/3 = 2x -1
pav-90 [236]

Answer:

x = 3/5

Step-by-step explanation:

multiply the equation by 3 --> (x/3 = 2x-1) x 3

x = 6x - 3

-5x = -3

x = 3/5

3 0
3 years ago
Let y in the form of a + ib, where a and b are real numbers, be the cubic roots of a complex number z 20, where z =2 4+i3. Find
GalinKa [24]

The possible values of a + b are 0.89, 3.01 and -3.9

<h3>How to determine the value of a + b?</h3>

The given parameters are:

y = a + ib

z = 24 + i3

Where:

y = ∛z

Take the cube of both sides

y³ = z

Substitute the values for y and z

(a + ib)³ = 24 + i3

Expand

a³ + 3a²(ib) + 3a(ib)² + (ib)³ = 24 + i3

Further, expand

a³ + i3a²b + i²3ab² + i³b³ = 24 + i3

In complex numbers;

i² = -1 and i³= -i

So, we have:

a³ + i3a²b + (-1)3ab² -ib³ = 24 + i3

Further expand

a³ + i3a²b - 3ab² - ib³ = 24 + i3

By comparing both sides of the equation, we have:

a³ - 3ab² = 24

i3a²b - ib³ = i3

Divide through by i

3a²b - b³ = 3

So, we have:

a³ - 3ab² = 24

3a²b - b³ = 3

Using a graphing tool, we have:

(a,b) = (-1.55, 2.44), (2.89,0.12) and (-1.34,-2.56)

Add these values

a + b = 0.89, 3.01 and -3.9

Hence, the possible values of a + b are 0.89, 3.01 and -3.9

Read more about complex numbers at:

brainly.com/question/10662770

#SPJ1

6 0
2 years ago
PLS HELP GIVING BRAINLIEST TO THE ANSWER!!!! Triangle ABC, in the coordinate plane, is reflected over the x-axis to form AA'B'C'
jasenka [17]

Answer:

The 3rd answer

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
(1/2)/(2/3) evaluate
nikitadnepr [17]

Answer:

\frac{3}{4}

Step-by-step explanation:

  1. Find a common denominator for the 2 denominators: 6
  2. Change the fractions: 2 × 3 = 6, 1 × 3 = 3, 3 × 2 = 6, 2 × 2 = 4
  3. Re-write the fractions: \frac{3}{6} and \frac{4}{6}  
  4. Write as an expression: \frac{3}{6} ÷ \frac{4}{6}  
  5. \frac{3}{6} ÷ \frac{4}{6} = \frac{3}{6} × \frac{6}{4}
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I hope this helps!

8 0
3 years ago
A rectangle's perimeter and area have the same value. The width of the rectangle is 6 units. What is the length of the rectangle
Sliva [168]

Answer:

The length ot rectangle is 3 units.

Step-by-step explanation:

The formula for perimeter is P = 2l + 2w and the area is A = l×w. Assuming that the perimeter and area have the same values so you have to compare it :

perimeter = 2l + 2w

area= l \times w

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let \: w = 6

2l + 2(6) = 6l

2l + 12 = 6l

12 = 6l - 2l

4l = 12

l  = 3 \: units

8 0
3 years ago
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