Nifal earned 9$ for washing two cars .He recived $1 more for the second car.How much was he paid for washing each car?Which two numbers have a sum of 9$?

Answers

Answer 1

Answer:

Nifal received $ 4 for washing the first car.

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

Step-by-step explanation:

The problem can be rewritten as follows: Find the sum of two consecutive entire numbers equal to 9. That is:

[tex]x + y = 9[/tex]

[tex]y = x+1[/tex]

Then, by eliminating y:

[tex]x + (x+1) = 9[/tex]

[tex]2\cdot x + 1 = 9[/tex]

Now, let is clear [tex]x[/tex]:

[tex]2\cdot x = 8[/tex]

[tex]x = 4[/tex]

Nifal received $ 4 for washing the first car.

The earning for the second car is: ([tex]x = 4[/tex])

[tex]y = x +1[/tex]

[tex]y = 4 + 1[/tex]

[tex]y = 5[/tex]

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.


Related Questions

What is the probability of getting a odd number when you roll a dice

Answers

Answer:

50% (1/2)

Step-by-step explanation:

3 of the 6 sides that exist on a dice have odd numbers.

Answer:

1/2 probability of getting an odd number

Step-by-step explanation:

Dice have the given outcomes of getting a 1, 2, 3, 4, 5, or 6. Considering that the desired outcomes are only 3 out of 6 of those given outcomes, that leaves us with a 3/6 or 1/2 chance of getting an odd number.

4. If the position of a vehicle is given by the equation: x(t)= 2t2 - 20t, find: A. the average rate of change (velocity) between. t= 1 and t = 3.​

Answers

Answer:

Below

Step-by-step explanation:

● x(t) = 2t^2 -20t

A is the average change between t = 1 and t = 3 wich also the velocity.

● A = [x(3)-x(1) ]/(3-1)

● A = [ x(3) - x(1)] / 2

● x(3) = 2×3^2 - 20 ×3 = 18-60= -42

● x(1) = 2×1^2 -20×1 = 2-20 = -18

● A = (-42-(-18))/2

● A = (-42+18)/2

● A = -24 /2

● A = -12

A is negative so the car must be going backwards

Suppose two quantities, A and B, have different dimensions. Determine which of the following arithmetic operations could be physically meaningful.

a. B-A
b. A-B
c. A+B
d. AB
e. A/B

Answers

Answer:

d. AB

e. A/B

Step-by-step explanation:

From the concept of homogeneity of dimension. The principle is that if two quantities occurs in the same direction, addition and subtraction of those two variable tends to occur but if two quantities occur in different direction, then we can only have either the division and multiplication of those quantities.

From the given information;

Suppose two quantities, A and B, have different dimensions.

The arithmetic operations  that could be physically meaningful are :

d. AB

e. A/B

Help Plzzzz.........​

Answers

Answer:

A (i) impossible, because the card D doesn't exist.

(ii) evens, because the number of vowel cards and consonant cards is equal  

B (i)  62 - 24 - 13 - 16 = 9

(ii) 24/62*100% = 38.7%

(iii) (13+16) / 62 * 100% = 46.77%

3(3 - x) = 5(2x + 7) solve for x

Answers

Answer:

x = -2

Step-by-step explanation:

3(3 - x) = 5(2x + 7) multiply 3 with both 3 and -x then 5 with 2x and 7

9 - 3x = 10x + 35 add like terms

9 - 35 = 10x + 3x

-26 = 13x

x = - 2

pls help i keep getting -2x= 0 this is the problem 11-3x=5(2-x)+1

Answers

Answer:

2x=0

x=0

Step-by-step explanation:

11-3x=5(2-x)+1

We first distribute the 5 to 2 and -x:

11-3x=10-5x+1

Combine like terms (combine all variables and then combine all constants)

-3x+5x=10+1-11

2x=0

x=0

please help i don’t know if i got the right answer

Answers

You choose the correct answer. It’s the first one

ooooh lemme drive da bus

The following diagrams show two rectangles.Given the perimeter of diagram A is 12cm while the perimeter of diagram B is twice the perimeter of diagram A.Find the values of x and y.​

Answers

Step-by-step explanation:

i tried to solve one question. if it is correct then u can try another also same like this.

What is the area of the figure below?

Answers

Answer:

please mark my answer brainliest

Step-by-step explanation:

the answer will be...9in square +25in square +24 in square.....=58 in square.....that is ur answer...find individual areas then sum up

When you have a division problem, what do you do to the exponents?

Answers

Answer:

you work out the exponents before you divide,

Step-by-step explanation:

You take your friend out to dinner for their birthday. The bill was $65.00. You left $75.00 which includes the tip. What was the percentage of the tip? (hint divide the tip amount by the amount of the dinner) (use a % sign in your answer and round to one decimal place)

Answers

Answer:

6.5%

Step-by-step explanation:

All i did was subtract 65 from the 75 which gave me 10 and I divided that by the original cost which was 65. That gave me 6.5%. Another possible answer is 0.1538461538461538. I just tried my best.

what is the sum of the binary numbers 1101, 1110 and 1001​

Answers

Answer:

1101₂ + 1110₂ + 1001₂ = 100100₂

Step-by-step explanation:

1101₂ = 1×2³ + 1×2² + 0×2¹ + 1×2⁰ = 8 + 4 + 0 + 1 = 13₁₀

1110₂ = 1×2³  + 1×2² + 1×2¹ + 0×2⁰ = 8 +  4 + 2 =  14₁₀

1001₂ = 1×2³ + 0×2² + 0×2¹ + 1×2⁰ = 8 + 1 = 9₁₀

13 + 14 + 9 = 36

36₁₀ =

36 : 2 = 18 + r 0

18 : 2 = 9 + r 0

9 : 2 = 4 + r 1

4 : 2 = 2 + r 0

2 : 2 = 1 + r 0

1 : 2 = 0 + r 1  ↑

= 100100₂

Answer:

[tex]\huge\boxed{1101_2+1110_2+1001_2=100100_2}[/tex]

Step-by-step explanation:

We know:

[tex]0_2 + 0_2 = 0_2\\0_2 + 1_2 = 1_2\\1_2 + 1_2 = 10_2[/tex]

[tex]\underline{+\begin{array}{ccc}_1\ \ \ \ \\1101\\1110\end{array}}\\.\ 11011\\\\\underline{+\begin{array}{ccc}_1\ \ _1_1 \ \\11011\\\ \ 1001\end{array}}\\.\ \ 100100\\\\[/tex]

HELP ASAP!!!!!!!!!!!

Answers

Answer:

C

Step-by-step explanation:

the statement (y<1/2x -4) reads "y is LESS than 1/2 x -4."

to fulfil this statement, follow these steps.

1) graph the line 1/2x -4, there will be a yintercept at (0,-4). Also the slope will be increasing (left to right) because 1/2 has no negative sign before it.

2) recognize the inequality sign. In this situation, the solution does NOT INCLUDE THE LINE, rather it includes the area BELOW/LESS THAN the line. If this, < had a line under it, it would mean less than OR equal to.

3) know that if the line is not included, the line will be broken. If the line IS included, which it is not, it would be a solid line.

Answer:

C

Step-by-step explanation:

First, graph the equation:

The y-intercept is -4.

And the slope is 1/2, an upward sloping line.

So, our graph should be either A, B, or C.

D is not correct, so eliminate that.

So, our inequality is:

[tex]y<\frac{1}{2}x-4[/tex]

Note that this inequality is strictly less than. There's no "or equal to" bar. Therefore, our line should be dotted.

Thus, eliminate A and B.

So, C is our answer

Further notes:

The inequality sign means that y is less than the equation. In other words, our shaded region should be below the line.

In C, the shaded area is indeed below the line.

So, C is indeed our answer :)

10 + 10 is what!? I’ll give you guys some points

Answers

Answer:

20

Step-by-step explanation:

Answer: 20

Step-by-step explanation:

IF my scientific calculations are correct the answer is 20

Select the correct choice that completes the sentence below -5(x-3) = -5x +15 illustrates the ____ property of multiplication over addition 1. Additive 2. Inverse 3. Distributive 4. Commutative 5. Multiplication

Answers

Answer:  3. Distributive

Step-by-step explanation:

Distributive property of multiplication over addition is the only property that is require to multiply an expression to the other expression with two or more than two terms.

For example: a (b+c)= a b+ac  , where a,b,c can be any expression.

Given expression:  -5(x-3) = -5x +15 , which illustrates the distributive property of multiplication over addition.

Hence, the correct option is 3. Distributive.

The rest of properties cannot work for multiplication over addition as they are used for one operation.

If -2/1 = 6/7x , what is x?

Answers

Answer:

7/3

Step-by-step explanation:

Answer:

x =-7/3

Step-by-step explanation:

[tex]-\frac{2}{1}=\frac{6}{7}x\\\\\frac{6}{7}x=-\frac{2}{1}\\\\\mathrm{Apply\:rule}\:\frac{a}{1}=a\\\frac{6}{7}x=-2\\\\\mathrm{Multiply\:both\:sides\:by\:}7\\7\times\frac{6}{7}x=7\left(-2\right)\\\\Simplify\\6x=-14\\\\\mathrm{Divide\:both\:sides\:by\:}6\\\frac{6x}{6}=\frac{-14}{6}\\\\Simplify\\x=-\frac{7}{3}[/tex]

- 4(x + 2) = - 2x + 1
HELP MEEEEE

Answers

The answer should be X=-9/2

i need help fast please

Answers

Answer:

C ) 1/8 * 8 * 8 * 8 * 8 * 8 * 8 * 8

Gordon took a panoramic picture that is 2 inches tall. The picture is 4 1/2 times as long as it is tall. How long is Gordon's picture?

Answers

Answer:

9 inches

Step-by-step explanation:

4 1/2 = 9/2

2 = 2/1

9/2 x 2/1 = 18/2

18/2 = 9in


Use the figure shown to the
right to write a polynomial
that represents the areatof
the shaded region. Express
the polynomial in standard
form, that is, in descending
powers of x.

The polynomial that represents the area of the shaded region is ]
(Simplify your answer. Type your answer in standard form.)

Answers

Answer:

4x + 16

Step-by-step explanation:

The area of the shaded region = area of the outer rectangle - area of the inner rectangle

Area of rectangle = l*w

Area of outer rectangle, where length (l) = (x + 5), and width (w) = (x + 4):

Area = (x + 5)(x + 4)

Expand

x(x + 4) +5(x + 4)

x² + 4x + 5x + 20

area of outer rectangle = x² + 9x + 20

Area of inner rectangle, where length (l) = (x + 4), and width (w) = (x + 1):

Area = (x + 4)(x + 1)

Expand

x(x + 1) +4(x + 1)

x² + x + 4x + 4

Area of inner rectangle = x² + 5x + 4

Area of shaded region = (x² + 9x + 20) - (x² + 5x + 4)

x² + 9x + 20 - x² - 5x - 4

Collect like terms together

x² - x² + 9x - 5x + 20 - 4

4x + 16

Area of the shaded region = 4x + 16

Question Help
A skier is trying to decide whether or not to buy a season skipass. A daily pass costs $77. A season skipass costs $300. The skier would have to rent skis with
either pass for $20 per day. How many days would the skier have to go skiing in order to make the season pass less expensive than the daily passes?

Answers

Answer:

the answer is 80

Step-by-step explanation:

can u please help me with this question

Answers

Answer:

D

its the big clix

Answer:

B

Step-by-step explanation:

Higher temps. shows lower altitude, therefore lowering temps. shows an increase in altititude

Enter the mixed number as an improper fraction. 3 3/5 =

Answers

Answer:

18/5

Step-by-step explanation:

Solve the following ten riddle I have 30 ones ,82 thousands ,4 hundred thousand, 60 tens and 100 hundreds what number am I

Answers

Answer:

182,463 is the number

4 hundred thousand82 thousands 100 hundreds 60 tens30 ones

Step-by-step explanation:

hope it will help ^_^

Please help I will mark brainliest!

Answers

Answer:

  A

Step-by-step explanation:

You know that the negative number with the largest magnitude is farthest to the left on the number line.

  3/4 = 9/12

  2/3 = 8/12

Then 3/4 > 2/3, so ...

  -3/4 < -2/3

What is the sign of -4+-8?
Choose 1 answer:
Positive
Со
B
Negative
Zero

Answers

Answer:

Negative

Step-by-step explanation:

negative

-4

-8

+

---

-12

negative

I don't have a graph. Does anyone know how to do this without a graph?

Answers

Answer:

10

Step-by-step explanation:

you would go to desmos graphing calculator and plug in the 2 points and you can see that it goes 8 down and 6 right and when you do Pythagorean theorem you get 64+36 which is 100 and the square root of that is 10 so the distance would be 10 units or simply 10

an airplane travels 5424 km against the wind in 8 hours and 6624 km with the wind in the same amount of time. what is the rate of the plane in still air and what is the rate of the wind?

Answers

Answer:

The rate of the plane is 753 km/h while the rate of the wind is 75km/h

Step-by-step explanation:

Here in this question, we are interested in calculating the rate of the plane in still air and the rate of the wind.

Since we do not know these rates, we shall be representing both using variables.

Let’s represent the rate of the plane in still air by x kmph while the rate of the wind be represented by y kmph

Now, for us to calculate the speed of the plane while it travels against the wind, that would be the speed of the plane in still air minus the speed of the wind.

Mathematically, that would be (x-y) kmph

Now the speed of the plane while it travels with the wind would be its speed in still air plus the speed of the wind.

Mathematically, that would be;

(x + y) kmph

From the question;

The plane journeyed 5424 km against the speed in 8 hours, this means that its speed will be 5424/8 = 678 kmph

Thus, that means;

x -y = 678 •••••••(i)

Now, traveling with the wind , its speed will be ;

6624/8 = 828 kmph

Thus;

x + y = 828 kmph •••••••(ii)

So we have two equations to solve simultaneously;

Let’s add both together;

x -y + x + y = 828+ 678

2x = 1,506

x = 1506/2

x = 753 kmph

From ii

x + y = 828

y = 828 - x

y = 828 - 753

y = 75 kmph

Brian parked in a parking garage 4 floors under ground. Herode an elevator up 17
floors. What floor did he ride up to?

Answers

Answer:

Floor ride up to = 13 floor

Step-by-step explanation:

Given:

Parking garage = 4 floors under ground

Elevator up-to = 17 floor

Find:

Floor ride up to

Computation:

Floor ride up to = Elevator up-to - Parking garage

Floor ride up to = 17 floor - 4 floor

Floor ride up to = 13 floor

-5y+15=3x i really need help on this question! 10 points! please explain.

Answers

Answer:

Step-by-step explanation:

-5y +15 = 3x

divide both sides by 3 to find x

-5y/3 + 5 = x

to find Y you have to isolate it so you add 5y to both sides and subtract 3x from both sides to get

-3x + 15 = 5y

then to find y divide both sides by 5

-3x/5 + 5 = y

The ones in bold are your answers and they are in their simplest form.

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