A mother wants to invest $15,000.00 for her son's future education. She invests a portion of the money in a bank certificate of deposit (CD account) which earns 4% and the remainder in a savings bond that earns 7%. If the total interest earned after one year is $900.00, how much money was invested in the CD account?
The total interest earned after one year is $900.00.
How much money was invested in the CD account? $
(Round to the nearest cent, if necessary.)

Answers

Answer 1

From the analysis of the above math, the amount she invested in the CD account is 5,000. See the analysis below.

What is the analysis showing the above answer?

Let A be the amount invested in the CD.

Let B be the amount invested in the savings bond.

A + B = 15, 000

.04A + .07B = 900

Multiply the first equation by -.04 and add it to the second equation to get rid of the A term.

-.04A-.04B = -600  add this equation to the second equation.

.03B = 300  multiplying by 100.  3B = 30,000

dividing by 3 on both sides: B = 10,000.  So A = 5,000

So she invested 5,000 in the CD account

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Related Questions

x -16 = 24 Please help

Answers

X=40
X-16=24. You add 16 to Isolate x then you have to add it to 24. 16+24=40 so that would leave you with x=40

Answer: 40

Step-by-step explanation:

x-16=24

24+16=40

=40-16=24

hope this helps☺️

Hi I need help ,Solve y−21<85 . Graph the solution. The solution is .

Answers

Answer:

a) y < 106

b) The graph is linked.

Step-by-step explanation:

Knowledge Needed

To solve an  inequality, solve it like an equation. The only exception is that if you multiply or divide both sides by a negative number, the sign flips directions.

If you add, subtract, multiply, divide, exponent/root both sides of an equation, the final result will stay the same. This is how you solve for an equation or inequality.

For example: x + 3 = 5

Subtract 3 on both sides.

x + 3 - 3 = 5 - 3

x = 2

How to Graph a 1 dimensional inequality:

1) Draw a number line with the number that the variable is being compared to. For example: x > 10

Make sure to put a tick mark and mark it with 10.

2) If the inequality symbol is > or <, draw an empty outline of a circle on the number (in this case 10).

If the inequality symbol is \(\geq or \leq\), draw a filled in circle on the number (int his case 10).

3) If the variable is less than the number, draw a arrow from the circle pointing left.

If the variable is greater than the number, draw a arrow from the circle pointing right.

Question

y - 21 < 85

Add 21 on both sides.

y - 21 + 21 < 85 + 21

y < 106

This reads out as y < 106.

Hi I need help ,Solve y21&lt;85 . Graph the solution. The solution is .

You roll a 6-sided die two times. What is the probability of rolling 1 and then rolling a 2

Answers

Don’t answer for Luigoshow

A population decays according to an exponential growth model, with P₀= 3072 and common ratio R = 0.75.
(a) Find P₅.
(b) Give an explicit formula for PN
(c) How many generations will it take for the population
to fall below 200?

Answers

(a) P₅ = 3072 * (0.75)⁵ ≈ 656.1.

(b) PN = P₀ * Rⁿ.

(c) n > log₀.₇₅(200).

(a) To find P₅, we can use the formula Pₙ = P₀ * Rⁿ, where P₀ is the initial population, R is the common ratio, and n is the number of generations. Plugging in the values, we have P₅ = 3072 * (0.75)⁵ ≈ 656.1.

(b) The explicit formula for Pₙ is Pₙ = P₀ * Rⁿ.

(c) To find the number of generations when the population falls below 200, we need to solve the inequality Pₙ < 200. Using the explicit formula, we have 3072 * (0.75)ⁿ < 200. Solving this inequality gives n > logₐ(b), where a = 0.75, b = 200. Using logarithms, we can find the value of n that satisfies this inequality.

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Mikaela purchased a paddleboard originally priced at $899. If all merchandise was on sa
spent on the paddleboard?
$385.67
$424.78
$578.51
$604.58

Answers

Answer: the answer is d

Step-by-step explanation:

i need help like fr ...

i need help like fr ...

Answers

Answer:

Step-by-step explanation:

-1

find the value of X, y and z

ans: x=50 y= 50 z=50​

find the value of X, y and z ans: x=50 y= 50 z=50

Answers

The value of x , y and z in the parallel line is 50 degrees.

How to find the angle in parallel line?

When parallel lines are crossed by a transversal line, angle relationships are formed such as vertically opposite angles, alternate interior angles, alternate exterior angles, adjacent angles, corresponding angles etc.

Therefore, let's use the angle relationships to find the angle, x, y and z as follows:

Therefore,

x = 360 - 310(sum of angles in a point)

x = 50 degrees

Therefore,

x = y(alternate interior angles)

Alternate interior angles are congruent.

Hence,

y = 50 degrees

Therefore,

x = z(alternate interior angles)

z = 50 degrees.

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Somebody help me with both

Somebody help me with both

Answers

Answer:

1) 5.925

2)9

Step-by-step explanation:

c) work out the value of 3² + 2³

d) work out the value of 2⁴ - 3²

c) work out the value of 3 + 2 d) work out the value of 2 - 3

Answers

Answer:

a) 2^6 = 2 x 2 x 2 x 2 x 2 x 2 = 64

b) 7^4 = 7*7*7*7 = 2401

c) 3^2 + 2^3

= 9 + 8

= 17

d) 2^4 - 3^2

= 16 - 9

= 7

What would be the interest for Rs. 1000 in 2 years at the rate of Rs. 2 per month per hundred rupees? discribe ​

Answers

Answer:

Step-by-step explanation:

principle=1000

time= 2 years

rate = 2×12=24/100=0.24%

simple intrest= p×r×t

= 1000 × 0.24 × 2

=480 rupees

total amount will be 1000 + 480= 1480

Evaluate the expression.

−14(−8) + 6 − 118 =

Answers

Answer:

0

Step-by-step explanation:

a hemispheric bowl with radius 25 contains water whose depth is 10. what is the area of the water's surface?

Answers

The area of the water's surface is approximately 981.25 square units.

Since the water depth is 10, the water fills up half of the hemispheric bowl. Therefore, we need to find the surface area of a circle with radius 25 (the base of the hemisphere) and divide it by 2.

The surface area of a circle with radius r is given by A = πr^2. So, the surface area of the circle with radius 25 is:

A = π(25)^2 = 625π

Dividing by 2, we get

625π/2

So the surface area of the water's surface is 625π/2 square units.

Approximating the value of π as 3.14, we get:

625π/2 ≈ 625(3.14)/2 ≈ 981.25

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Lisa is a waitress at Ruth's Chris Steak House making $38,000 per year. His Gross Pay is $3,166.67 per month.

Paycheck Deductions (Taxes, Insurance, & Retirement) $1,063.64

Needs Spent $1,505.00

Wants Spent $375.00

What is Lisa's Needs Budget at 50%?

Answers

To calculate Lisa's needs budget at 50%, we need to find half of the amount she spends on needs each month:

$1,505.00 / 2 = $752.50

So, Lisa's needs budget at 50% would be $752.50 per month.

2. The value of a machine depreciates by 5% every year. It is given that the initial value of the machine is RM100 000.

(a) Express its value, in RM, after n years.

(b) Hence, find its value after 10 years to the nearest ringgit.​

Answers

Answer:

Step-by-step explanation:

Depreciation means wearing and tearing in the value of an asset over the years

(a) Given:

p = initial value of an asset

i% = depreciation per year

n = number of years

Depreciation after n years (d) = \(p(1-\frac{1}{100} )^{n}\)

Value of machine after n years = p-d

(b) Given:

p = RM100000

i% = 5

n = 10
Depreciation after 10 years = \(100000(1-\frac{5}{100} )^{10} = 59873.69392\)

Value of machine after 10 years = p-d = RM100000 - RM59873.69392 = RM 40123.30608

Value of machine after 10 years to nearest ringgit = RM40123

Randy and Trey take turns cleaning offices on the weekends. It takes Randy at most 4 hours to clean the offices. It takes Trey at most 6 hours to clean the offices. What is the greatest amount of time it would take them to clean the offices together? 2.4 hours 2.5 hours 3.0 hours 4.0 hours

Answers

Answer:

A) on edge2020

Step-by-step explanation:

The greatest amount of time when they worked together is 2.4 hours.

What is algebra?

Algebra is the part of mathematics that helps represent problems or situations in the form of mathematical expressions.

Given:

Randy at most 4 hours to clean the offices.

Trey at most 6 hours to clean the offices.

If they work together, they will clean

1/4 + 1/6 = 5/12 of the offices.

Let x be the greatest amount of time it would take them to clean the offices together.

Thus,

5*x/12=1

5x=12

x= 12/5

x= 2.4 hours.

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The expression x4 - 16 is equivalent to​

Answers

Answer:

4(x-4)

Hope this helps

Have a good day :)

Step-by-step explanation:

the answer is 4(x-4)

you get this answer by factoring out 4 from the expression... hope this helps:)

Which statements are correct steps in finding the linear equation of a line that passes through the points (−1, 7) and (2, 4) using the point-slope form method? Select all that apply.
y = x + 6
7 = –1(–1) + b
y – 4 = –1 (x – 2)
y – 7 = –1 (x – (–1))
y – 2 = x – 4
y = –x + 6

Answers

The awnser is number 3,4,and 6 hope this helps

Answer:

346

Step-by-step explanation:

Help help help help help

Help help help help help

Answers

Answer:

1: No Solutions

2:Infinite solutions

3: One Solution

Step-by-step explanation:

Desmos screenshots show solutions for simplified equations

Help help help help help
Help help help help help
Help help help help help

a senate committee has 8 republicans and 6 democrats. in how many ways can we form a subcommittee with 3 republicans and 2 democrats?

Answers

840  ways can we form a subcommittee with 3 republicans and 2 democrats

Given that

A combination in mathematics is a choice made from a group of separate elements where the order of the selection is irrelevant (unlike permutations). Three fruits, such as an apple, an orange, and a pear, for instance, can be combined into three different pairs: an apple and a pear, an apple and an orange, or a pear and an orange. A k-combination of a set S is officially defined as a subset of S's k unique elements. So, if and only if each combination contains the same elements, two combinations are said to be identical. (It is not important how each set's members are arranged.) If there are n elements in the set, then C kn is the number of k-combinations.

a senate committee has 8 republicans and 6 democrats.

now, we need to find how many ways can we form a subcommittee with 3 republicans and 2 democrats

= 8\(C_{3}\) × 6\(C_{2}\)

=\(\frac{8!}{5!3!}\) × \(\frac{6!}{4!2!}\)

=56 × 15

=840

840  ways can we form a subcommittee with 3 republicans and 2 democrats

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Order the following numbers from least to greatest: 4.06, 4.6, 4.72, 4.59.

a 4.06, 4.59, 4.6, 4.72
b 4.59, 4.06, 4.6, 4.72
c 4.72, 4.6, 4.59, 4.06
d 4.72, 4.6, 4.06, 4.59

Answers

The numbers from least to greatest number is as follows;

4.06, 4.59, 4.6, 4.72

How to order number form least to greatest?

The numbers from least to greatest is as follows;

Ordering from least to the greatest simply means we are ordering the number from the smallest to the largest number.

Therefore,

4.06, 4.6, 4.72, 4.59

The numbers from least to greatest number is as follows;

4.06, 4.59, 4.6, 4.72

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PLEASE HELP WILL GIVE BRAINLIEST

(Check photo above)

PLEASE HELP WILL GIVE BRAINLIEST(Check photo above)

Answers

C.44  is the the correct to the question a net of a triangular prism is shown below 8ft 3ft 5ft 5ft 3ft 4ft A.120 B.96 C.44 D.108

the correct answer is C.

Which is true of the measures of the sides of the original square? each side of the original square is one-fourth the length of each side of the scale model. Each side of the original square is 4 times the length of each side of the scale model. Each side of the original square is the same length as each side of the scale model. Each side of the original square is 4 feet less than the scale model.

Answers

For the measures of the sides of the original square, we can conclude that each side of the original square is one-fourth the length of each side of the scale model. Therefore, 1st option is correct.

It is known to us that -

The value of the scale factor = 4

We also know that -

Each side of the scale model = Scale factor * Side of the original square

=> Each side of the scale model = 4 * Side of the original square

=> Side of the original square = (1/4) * Each side of the scale model

Thus, for the measures of the sides of the original square, we can conclude that each side of the original square is one-fourth the length of each side of the scale model. Therefore, 1st option is correct.

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lcm of 42 and another number is 252 what is the largest possible value of this number​

Answers

Answer:

  252

Step-by-step explanation:

The largest possible value of the second number is the least multiple itself: 252.

Tìm x biết:
a) (50 − x) + 12 = 31 ; b) 75 ∶ (x − 2) + 4 = 7 ;
c) 125 − 3(x + 3) = 65 ;

Answers

a) (50 - x ) +12 =31
- x + 62 = 31
- x = - 31
x = 31

b) 75 . ( x - 2 ) + 4 = 7
75x - 150 + 4 = 7
75x - 146 = 7
75x = 153
75x/75 = 153/75
x = 51/25
x = 2 1/25

c) 125 -3(x + 3 ) = 65
125 -3x - 9 = 65
3x + 116 = 65
3x = - 51
x = - 17

Evaluate if a=3, x=2, y=5, and z=4
2y - 4a = (x + 1)]
6
9
-2/3

Evaluate if a=3, x=2, y=5, and z=42y - 4a = (x + 1)]69-2/3

Answers

Answer:

it's six .........

......

Answer:

Not sure but I think it's -2/3

Step-by-step explanation:

When you add in the letters with numbers the equation soon looks like:

2(5) - 4(3) = (2 + 1)

10 - 12 = 3

And 10 - 12 = -2 so we could put it over 3 to make -2/3

How instructional context can impact learning with educational technology: Lessons from a study with a digital learning game.

Answers

The instructional context can greatly impact learning with educational technology. In a study with a digital learning game, it was found that the instructional context influences student engagement and motivation. This, in turn, affects their learning outcomes.

The study examined the design of the game, the teacher's role, and the classroom environment. By optimizing these factors, the researchers found that students were more likely to be actively engaged and achieved better learning outcomes.

Therefore, the instructional context plays a crucial role in leveraging the potential of educational technology for effective learning.

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Samuel drives 144 miles in 2 1/4 hours. It he continues at the same rate, he will have driven
miles in hours

Answers

Answer:

36

Step-by-step explanation:

When the expression 10^2021 − 2021 is evaluated, the result is a very large number.
You probably do not have enough time to perform the calculation. So, in an
effort to save you some time and paper, instead of evaluating the expression
10^2021 − 2021, determine the sum of the digits in the difference. How do I do this pls

Answers

Answer:

18,176

Step-by-step explanation:

Figure out an easier thing to do: 1000 - 2021 = 9,797.

Therefore, our answer will be like 9999999999999999999999997979. Out of all of these digits, there are only 2 that arent nines. We know the amount of digits since it's 10^2021 power. We will have one less since we are subtracting 2021. Therefore, 2020 digits in total. Now we know of those 2020 digits, 2 of them are 7, therefore 2018 of them are 9s. That means do 2018(9) + 2(7) = 14 + 18,162 =  18,176.

what is the remainder when 31,671 divided by 68

Answers

Answer:

51

Step-by-step explanation:

Step 1:

31,671/68 = 465.75

Step 2:

31671 - 31620 = 51

Answer:

51

Hope This Helps :)

Answer:

51

Step-by-step explanation:


Maximize Z=12*1+16* 2 Subject to the constraints 10* 1 +20* 2
<=120; 8x_{1} + 8x_{2} <= 80 and x_{1}; x_{2} > 0 Solve
through graphical method

Answers

The optimal solution, obtained through graphical method, is: x₁ = 4, x₂ = 2, with the maximum value of Z = 80.

To solve the given linear programming problem graphically, we start by plotting the feasible region defined by the constraints:

Constraint 1: 10x₁ + 20x₂ ≤ 120

Constraint 2: 8x₁ + 8x₂ ≤ 80

Non-negativity constraint: x₁ ≥ 0, x₂ ≥ 0

The feasible region is the area of the graph that satisfies all the constraints.

Next, we calculate the objective function Z = 12x₁ + 16x₂. We plot the objective function as a line on the graph.

The optimal solution, which maximizes Z, is the point where the objective function line intersects the boundary of the feasible region.

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