Billy invested $18 of savings in two major business enterprises which paid interest at the rate of 3% and 6%, respectively. If his annual income for these two enterprises was equivalent to a return of 5% on the entire investment, find how much he invested at 3%.

Answers

Answer 1

Answer:

$6

Step-by-step explanation:

System of equations

x+y = 18

0.03x+0.06y = 5% of 18 = 0.9

(0.03x+0.06y=0.9)*100 = 3x+6y=90

(3x+6y=90)÷3 = x+2y=30

Substract (1)-(2)

x+2y=30 ... (1)

x+y=18 ... (2)

y=12

x+12=18

x=6

Thanks.


Related Questions

Which of the following statements is FALSE?

AO = 7.8 cm
c1 = 40°
BO = 7.8 cm
a2 = 40°

Answers

Parallelogram is a quadrilateral with equal diagonals. The statement BO = 7.8 cm is the only false statement

Properties of a parallelogram

From the given diagram, the opposite sides and angle of the figure are the same but the diagonals are not equal. This shows that:

m<B = m<D

m<A = m<C

Since the diagonals are not equal that is BD is not equal to AC, hence:

OB ≠ OC

Hence the statement BO = 7.8 cm is the only false statement

Learn more on parallelogram here: https://brainly.com/question/970600

Answer:BO = 7.8 cm

Step-by-step explanation: just did the quiz

What will be the sales price of the car if it has a regular price of $16 000 and is on sale for 20% off? Determine the cost of the car including 13% tax.

Answers

Answer:

14,464

Step-by-step explanation:

16,000 - 20% = 12,800

12,800 + 13% = 14,464

I hoope this is correct. Have a wonderful day and dream a good dream of good people. :)

Natalie can hop 24 times in 8 minutes at a constant rate. How many times can she hop in 7 minutes?

Answers

Answer:

in 7 mins she can hop 21 times

Step-by-step explanation:

24 divided by 8 = 3

24-3=21

Answer:

Natalie can hop 21 times in 7 minutes

Step-by-step explanation:

To figure out how many times she can hop in 7 minutes you need to find the average hop each minute.

First, you write 24/8. You simply that to 3/1.

So Natalie can jump 3 times in 1 minute.

If you want 7 minutes, you multiply 1 by 7, and 3 by 7, which gets you 21 hops for 7 minutes.

-I hope this helps!

Factor completely.
x2 - 10x + 24

Answers

Answer:

[tex]\boxed{\sf{(x-4)(x-6)}}[/tex]

Step-by-step explanation:

In order to solve this problem, all you have to do is multiply their expressions by their factors.

To begin, you must group these expressions.

[tex]\sf{x^2-10x+24=\left(x^2-4x\right)+\left(-6x+24\right)}[/tex]

After that, you factor.

Solve.

[tex]\sf{x^2-4=x(x-4)}[/tex]

-6x+24=-6(x-4)

Then rewrite the problem down.

x(x-4)-6(x-4)

Factor by the common term.

(x-4)(x-6)

Therefore, the final answer is (x-4)(x-6).

I hope this helps you! Let me know if my answer is wrong or not.

please help me with this question , we are now just learning it .

Answers

Answer:

angle 1=angle 4 ( vertical opposite angle)

50
The graph shows a proportional relationship between the
number of kilometers traveled by a bicycle (y) and the number of
minutes (x).
45
40
35
30
Distance traveled (km)
What is the unit rate, expressed in kilometers per minute?
25
20
O 0.30 km/min
15
(40, 12)
O 0.33 km/min
03.10 km/min
->
5 10 15 20 25 30 35 40 45 50
Time (min)
3.33 km/min
1
2
3
4
5
6
7
8
Next
9
10

Answers

Given a graph with a line running through coordinates (0,0) and coordinates (40,12), the unit rate of the relationship between the number of kilometers traveled by a bicycle (y) and the number of minutes (x) is given by the slope of the line.

Please help, I’ll mark your answer as brainliest.

Answers

Answer:

it'sssssss 2.51

Step-by-step explanation:

========≈==================

Find the amplitude and period of y = 5 cos (4x)

Answers

Answer: amplitude is 5 and Period is pi/2

Step-by-step explanation:

yes ‍♀️

Tom earns $3200 a month. He pays $950 to rent an apartment. What percent of Tom’s income does he pay

Answers

Hey there!

Answer:

336.84%

3200 out of 950 is 336.84%

Solution:

3200 out of 950 is what %?

3200 out of 950 is P%

Equation: Y/X = P%

Solving our equation for P

P% = Y/X

P% = 3200/950

p = 3.3684

Convert decimal to percent:

P% = 3.3684 * 100 = 336.84%

well, if we take 3200 to be the 100%, what is 950 off of it in percentage?

[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} 3200 & 100\\ 950& x \end{array} \implies \cfrac{3200}{950}=\cfrac{100}{x}\implies \cfrac{64}{19}=\cfrac{100}{x} \\\\\\ 64x=1900\implies x=\cfrac{1900}{64}\implies x = 29.6875[/tex]

please check picture and answer correctly please.

Answers

Answer:

27

Step-by-step explanation:

multiply 9 x 6 and you get 54. Since it's a triangle divide by 2 and you get 27

Select the values that would satisfy the following inequality:
K ≤ 12.75

|12.75|

|-12.75|

13

|-15|

0

Answers

Answer:

If it is a conjunction that uses the word and, the solution must work in both inequalities and the solution is in the overlap region of the graph. If it is a disjunction that uses the word or, the solution must work in either one of the equations.

Step-by-step explanation:

An angle of measure [tex]\frac{4\pi }{3}[/tex] intersects the unit circle at point ([tex]-1/2,- \frac{\sqrt{3} }{2}[/tex]). What is the exact value of tan([tex]\frac{4\pi }{3}[/tex])?
a. -1/2
b. [tex]\sqrt{3[/tex]
c. [tex]\frac{\sqrt{3} }{3}[/tex]
d. [tex]-\frac{\sqrt{3} }{2}[/tex]

Answers

Answer:

  b.  √3

Step-by-step explanation:

Given a point on the unit circle that represents the position of the terminal ray of an angle, the tangent of that angle is the ratio of the y-coordinate to the x-coordinate.

  tan(4π/3) = y/x = (-√3/2)/(-1/2) = √3/1

  tan(4π/3) = √3

_____

Additional comment

A calculator can confirm this for you.

Determine which polynomial is a perfect square trinomial. 4x2 − 12x 9 16x2 24x − 9 4a2 − 10a 25 36b2 − 24b − 16.

Answers

This [tex]4x^2 - 12x + 9[/tex] factors into [tex](2x - 3)^2[/tex], and is thus a perfect square trinomial.

What is a perfect square?

A perfect square is a number system that can be expressed as the

square of a given number from the same system.

Trinomial [tex]Ax^2 + Bx + C[/tex] is a perfect square if

A > 0

C > 0

B = ±2√A√C

1. [tex]36b^2 - 24b - 16[/tex]

C < 0

2. [tex]4a^2 - 10a + 25[/tex]

2√A√C = 2×2×5

              = 20,

B = −10

3. [tex]16x^2 + 24x - 9[/tex]

not a perfect square,

C < 0

4. [tex]4x^2- 12x + 9[/tex]

perfect square

A>0,

C>0,

2√A√C = 2×2×3

-B = 12

= [tex](2x - 3)^2[/tex]

Thus,  [tex]4x^2- 12x + 9[/tex] the polynomial is a perfect square trinomial.

Learn more about perfect square;

https://brainly.com/question/1832550

A football is punted from a height of 2.5 feet above the ground with an initial vertical velocity of 45 feet per second.

Write an equation to model the height h, in feet, of the ball t seconds after it has been punted.
The football is caught at 5.5 feet above the ground. How long was the football in the air?

Answers

Answer:

1.451 seconds.  Hurry.

Step-by-step explanation:

The position(height, h) of the foot ball will be given by the equation:

h = -32.2t^2 + 45t + 2.5

The term -32.2t^2 consists of the acceleration caused by gravity at Earth's surface ( -32 ft/sec^2) and the term +45t accounts for the initial velocity.  The + is assigned since the ball is moving vertically from ground.  The negative sign in -32t^2 is due to the acceleration being towards ground.  The term 2.5 accounts for the fact that the initial height of the ball is 2.5 feet above ground.

We can either calculate or graph with this function to find the time the ball spends in the air:

Calculate:

h = -32.2t^2 + 45t + 2.5

We need a value of t that would cause h to be 5.5 feet, the level it was caught:

5.5 = -32.2t^2 + 45t + 2.5

-32.2t^2 + 45t + 2.5 = 5.5

-32.2t^2 + 45t -3.0  = 0

Solve for t using the quadratic formula.  I get a value of 1.33 seconds.

Graph:

See the attached graph.  It confirms the 1.33 second value

A box of 15 cookies costs $9dollar sign, 9. What is the cost for 1 cookie?

Answers

Answer:

$1.66 or $1.70 if you round up

Step-by-step explanation:

Help will give brainleiest

Answers

Answer:

40" by 50"

Step-by-step explanation:

From inspection of the diagram,

height of 2 squares of the quilt ≈ height of doll plus a little bit

⇒ height of 2 squares of the quilt ≈ 18 + 2 = 20 in

⇒ height of 1 square of the quilt ≈ 20 ÷ 2 = 10 in

As the height of a square = width of a square

⇒ width of 1 square of the quilt ≈ 10 in

Dimensions of the quilt

width = 4 squares = 4 × 10 = 40 in

height = 5 squares = 5 × 10 = 50 in

Ratios

We can also work out the width and height by using ratios.

The ratio of width to height of the quilt = 4 squares : 5 squares

If we multiply by 10, the ratio becomes 40 : 50

Final Solution

40" by 50"

Please help i am confused

Answers

Answer: 12.16

Step-by-step explanation:

someone please help me find the value of x

Answers

Answer:

x = 102.5°

Step-by-step explanation:

these two angles are adjacent and supplementary which means their sum must be equal to 180 degrees

create this equation to find 'x':

x + x-25 = 180

combine 'like' terms:

2x - 25 = 180

add 25 to each side:

2x = 205

x = 205/2 or 102.5°

The question is in the image. I really need help, please.

Answers

Answer:

  (b)  65/27

Step-by-step explanation:

Here, we notice the index for the summation runs from 0 to 3, so there are a total of 4 terms.

The sum represented by the summation symbol is ...

  5(-2/3)^0 +5(-2/3)^1 +5(-2/3)^2 +5(-2/3)^3

  = 5(1 -2/3 +4/9 -8/27)

  = 5/27(27 -18 +12 -8)

  = 5(13/27) = 65/27

__

There is a formula for the sum of a geometric series:

  Sn = a1×(1 -r^n)/(1 -r)

Here, the first term is a1 = 5(-2/3)^0 = 5. The common ratio is the base of the exponential, r = -2/3. So, the sum of n=4 terms is ...

  S4 = 5×(1 -(-2/3)^4)/(1 -(-2/3)) = 5×(1 -16/81)/(5/3) = 65/27

Y= x + 6
y= -x+2

solve each system of equations by substitution

Answers

Answer:

x= -2
y=4

Step-by-step explanation:


Since we have an equation set equal to y, we can plug it in for either value of y.

I will be using y= x+6 in this case.

Plug in x+6 for the other equation, so instead of y=-x+2 it will now be that x+6 = -x+2

Now add x to both sides, and that will remove the x on the left side leaving us with 2x+6 = 2

Now, subtract 6 from both sides to get 2x isolated, and you will get 2x= -4

Divide both sides by 2 to get x= -2

Not plug x= -2 in back for the top (or bottom) equation and get that y=4

Hope this helps and isn't too complicated!

Find S.P. in the following cases. a) M.P. = Rs 540, discount = 5 %​

Answers

Step-by-step explanation:

Given:-

MP = Rs 540. Discount = 5 %

To Find:-

Sell price

Solution:-

SP = MP - Discount.

MP = Marked Price ( Also called List Price) SP = Selling Price.

Discount = (Discount %) of MP

Discount = (5/100) 54p

Discount = 27 Rs

Subtract discount from MP to get SP

SP = MP - Discount

SP = 540 - 27 Rs

SP = 513 Rs

Answer;

soln;

MP= Rs 540

discount = 5%

now,

SP = MP - D% of MP

    = 540 - 5/100 * 540

    =Rs 513

   

Do problems #4-6. Your answer choices are in a table below. Type your answer numbers the blank to move on! No spaces, no commas. Put it all together. *

I need help with 5

Answers

Answer:

[tex]\frac{1}{2a}[/tex]

Step-by-step explanation:

Simplify or expand

[tex](2a)^{-1}[/tex]

Simplify using negative exponent rule [tex]a^{-n}=\frac{1}{a^n}[/tex]

[tex]\frac{1}{2a}[/tex]

I hope this helps you

:)

What is the area of this figure?
Use 3.14 for TT.

Please help

Answers

Answer:

406.08

Step-by-step explanation:

First FInd the area of the rectangle : which is short side * long side

-> 15*12=180m

Then find the area of the half circle, the formula of the area of a circle is [tex]\pi r^2[/tex]

here it's half a circle so it's [tex]\frac{\pi r^2}{2}[/tex] where r is 12

-> [tex]3.14\cdot \frac{\left(12\right)^2}{2}=226.08 m[/tex]

Finally just add the area of the rectangle with the area of the half circle

-> [tex]180+226.08=406.08 m[/tex]

What is the standard form of the equation of a parabola that opens left or right? A. Y = ax2 + bx + c B. X = ay2 + by + c C. X = a(y - v)2 + h D. Y = a(x - h)2 + v

Answers

Answer:

The equation of the parabola which opens left or right is (B) x= ay^2 + by + c

:)

What is the correct answer for this?

Answers

side=a=5cm

Volume:-

side³a³5³125cm³

Benjamin has 3 dimes and 4 nickels. What percent of a dollar does he have?

Answers

Answer:

50%

Step-by-step explanation:

Hope this helped

Maybe mark brainiest

Dime = 10 cents

Nickel = 5 cents

Total value of coins = 3(10) + 4(5) = 30 + 20 = 50

To find the percent, first create a fraction. The fraction will be the amount of money that Benjamin has over the total (one dollar).

50 / 100 = 5 / 10 = 0.5

0.5 x 100 = 50

50%

Answer: 50% of a dollar

Hope this helps!

Find the smallest number by which 6615 is to be multiplied by to get a perfect square

Answers

Answer:

3x 5

Step-by-step explanation:

Find the median and mean of the data set below:

Answers

Median = middle number = 30
Mean = sum of all numbers / how many numbers = 135 / 5 = 27

Answer:

27=mean. 30=Median

Step-by-step explanation:

trust me I know what I'm doing

Terrence measured an Italian restaurant and made a scale drawing. The scale of the drawing was 7 centimeters = 2 meters. What scale factor does the drawing use?
Simplify your answer and write it as a fraction.

Answers

Answer:

200/7

Step-by-step explanation:

(2 meters)/(7 centimeters) or (2m/7cm)

1 meter = 100 cm

(2m/7cm)*(100cm/1m) = 200/7 (or   28.57) scale factor.

What is the length of a diagonal of rectangle EFGH?

Answers

Answer:

[tex]\sqrt{53}[/tex]

Step-by-step explanation:

First, we find out the length of EH, which is 7. And then, we find the length of GH, which is 3. If we square both the numbers and add them, we get 53. And then we square root that to get [tex]\sqrt{53}[/tex]

Hope this helps <:)

Don't forget to put brainliest!

Other Questions
According to the map above, which of the following states has the lowest proportion of women in its legislature?1.Tennessee2.Kansas3.Texas4.North Carolina5.MontanaSOURCE: Adapted from Center for American Women and Politics, Women in State Legislatures 2016. Based on paragraphs 1 and 2, analyze how Rosa Parks introduced herself. What additional information do you learn about Parks character from the details she shares? Highlight evidence from the text and make annotations to explain your analysis. In paragraph 5, Parks used the word tired repeatedly. Why does she repeat the word? What effect does this create? Discuss the denotations and connotations of this word as Parks used it. Highlight textual evidence and make annotations to explain your response. In paragraph 13, Parks said that she was not frightened or angry but resigned to the consequences of the situation. Which details in previous paragraphs illustrate this attitude? Support your answer with textual evidence and make annotations to explain your answer response. In paragraph 16, explain how Parks used word denotation and connotation to create the mood of the jail. Highlight evidence from the text and make annotations to support your explanation. Based on the text, is Rosa Parks a hero? Why or why not? Highlight textual evidence and make annotations to explain your evaluation. Within a diversified company a set of businesses that share identical or very similar strategies or strategic challenges is called a. To what policy was John F Kennedy referring when he used the term, "our past," and suggested that the United States might have been unfair and rigid in its approach? Assume you have two six-sided dice - both numbered 1 to 6 - and add the total of the dice after each roll. Leave all answers as a fraction a/b. What is the probability of rolling a 4 A cylinder has volume 120 cm3.What is the volume of a cone with the same radius and height? ? 40 cm 60 cm O 240 cm 360 cm 3 Why would Europeans want to open trade with Japan? this is what I need help with, because I dont understand how to do it In approximately 300-words, address the following statement, drawing from what you have learned in this lesson:Describe the primary responsibilities of the Department of Homeland Security, and discuss whether, in your opinion, the agencys organization and mission are too broad to be effective in meeting its obligations to the American people. Keynesian analysis stresses that a tax cut that increases the government's budget deficit or reduces its budget surplus:____________ a. will increase the money supply. b. is appropriate during a period of inflation. c. will stimulate aggregate demand and, thereby, promote employment. d. will stimulate aggregate supply and, thereby, promote employment. rent is putting in a sidewalk that is 1/18 yard thick, 9 yards long, and 1 yard wide. how many cubic yards of cement does he need? Why were there protests in Ghana in 1948? What effect did these protests have on Nkrumah? Find the area of a semicircle with diameter 9 cm before the wedding the bride was very nervous is this sentence literal or figurative language 5. What device would an elderly person most likely have trouble hearing? (Assume each sound has the same decibel level)O A. a car hornO B. a smoke alarmO C. a tubaO D. a foghorn Please help with this question I really do need help lol ONLY NUMBER ocho Use the following table to find the probability that a randomly chosen member of the Student Government Board is a graduate student or lives inon-campus housing. Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.Students on the Student Government BoardClassificationOn-Campus Housing Off-Campus HousingFreshman14Sophomore20Junior12Senior20Graduate Student23PreyNextCopy DataAnswer How to enter your answer opens in new window) 2 PointsKeypadKeyboard Shortcuts56F what value of a makes this proportion 4/12 = a/27 which option is an example of a renewable resource i only need 6-14 :)LUCI: Pedro, qu 1.(hacer) cuando 2.(salir)con Ana?PEDRO: Cuando yo 3.(salir) con Ana, me 4.(poner) ropa que est de moda y siempre le 5.(traer)flores.LUCI: Que romntico eres, sobrino!PEDRO: Por cierto, este sbado vamos a salir. Ta, 6.(conocer) un buen restaurante espaol?LUCI: S, 7.(conocer) La madrilea. Yo 8.(saber) que es un restaurante excelente porque fuila semana pasada.PEDRO: Me parece muy buena idea.LUCI: Pedro, 9.(tener) dinero?PEDRO: Solamente 10.(tener) $30. Est bien?LUCI: No, necesitas ms dinero. Yo te 11.(dar)$30 ms?PEDRO: Oh, gracias, ta. La semana que 12._(venir) yo13.(venir) por aqu y te 14.(decir) cmo me fue.