4. Two times a number added to another number is 25. Three times the first number minus the other number is 20. Find the two numbers.

Answers

Answer 1

Answer:9 & 7

Step-by-step explanation:

Let x be the first number and y be the second.

 

2x + y = 25

3x - y =20

 

1) Add them together.

 

5x = 45

x = 9

 

2) Solve for y.

 

2(9) + y = 25

y=7

 

3) Check your work on the other equation.

 

3(9) - (7) = 20

27 - 7 =20

20 = 20


Related Questions

Multi-step equations
20) -5(1 - 5x) + 5(-8x - 2) = -4x - 8x

Answers

Answer: x = -5 because I isolated the variable
-5 + 25x - 40x - 10 = -4x - 8x
-15x - 15 =-12x
-15 x + 12x = 15
-3x = 15
x = -5

what is negative 1 and 4/5 as a decimal ​

Answers

Answer:

1.08

Step-by-step explanation:

Answer:

9/5 or -1.8 or  -1 4/5

Step-by-step explanation:

What expression is equivalent to: 100​

Answers

Answer:

10 x 10, 2 x 50

Step-by-step explanation:

Write an equation in slope-intercept form for the line that passes through (4, 7) and is perpendicular to the y-axis.

Answers

Answer:

y=2x+3

step explanation:

Please help!!!
I will give brilliance!!

Answers

Answer:

15

Step-by-step explanation:

sqrt 230 = 15.165...

w over 5 = 3
w = ?
needs sum help​

Answers

Answer:

w=15

Step-by-step explanation:

Solve for  w  by simplifying both sides of the equation, then isolating the variable.

What is the slope on this graph PLEASE HELP FAST!!!

Answers

Answer:

slope = 6

Step-by-step explanation:

slope = rise/run

rise = 12 run = 2

A contractor purchases ceramic tile to remodel a kitchen floor. Each tile cost $4 and the adhesive/grouting material costs $17.82. If the contractor pays a total of $545.82 how many ceramic tiles did the contractor purchase

Answers

Answer:

132 tiles

Step-by-step explanation:

Each tile cost $4

The adhesive/grouting material costs $17.82.

If the contractor pays a total of $545.82

Let the number of tiles be represented as x

The equation is represented as:

$17.82 + $4 × x = $545.82

17.82 + 4x = 545.82

Collect like terms

4x = 545.82 - 17.82

4x = 528

Divide bother sides by 4

4x/4 = 528/4

x = 132

The number of ceramic tiles the contractor bought = 132 tiles

What is the sales tax on a chair with a price tag of $180, if the tax rate is 5.75%?

Answers

Answer:

$190.35

Step-by-step explanation:

180 ⋅ 0.0575 = 10.35

Add 180 to 10.35

$190.35

(I could be wrong. Sorry if I am)

Hope I helped :)

Please consider Brainliest :)

The least common multiple of two numbers is 60, and one of the numbers is 7 less than the other number. What are the numbers? Complete the explanation. The two numbers are . 60 is a multiple of each of its factors. The factors with a difference of 7 are , and their LCM is 60.

Answers

Explanation: As the least common multiple of two numbers is 60 , the two numbers are factors of 60 . Among {1,2,3,4,5,6,10,12,15,20,30,60} ,5 & 12 is the only two pair of numbers whose difference is 7 .

Answer: 5 & 12

One of the wagers in roulette is to bet that the ball will stop on a number that is a multiple of 3. (Both 0 and 00 are not included.) If the ball stops on such a number, the player wins double the amount bet. If a player bets $5, compute the player's expectation. (Round your answer to two decimal places.)

Answers

Answer:

The player's expectation is a loss of 20 cents.

Step-by-step explanation:

In a game of roulette, there are 38 slots where the ball can stop.

The slots are numbered as follows: {0, 00, 1, 2, 3 ..., 36}.

So, N = 38.

The slots which are multiples of 3 are:

S = {3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33 and 36}

So, n (S) = 12.

Let X = the ball stops on a number that is a multiple of 3

The probability that the ball stops on a number that is a multiple of 3 is:

[tex]P(X)=\frac{n (S)}{N}=\frac{12}{38}=0.32[/tex]

It s provided that the player wins double the amount bet if the ball stops on a number that is a multiple of 3.

Compute the player's expectation as follows:

[tex]E(X)=\sum X\cdot P(X)[/tex]

        [tex]=(\$10\times 0.32)+(-\$5\times (1-0.32))\\\\=\$3.20-\$3.40\\\\=-\$0.20[/tex]

Thus, the player's expectation is a loss of 20 cents.

Think About the Process The length of a rectangle is twice the width. The area of the rectangle is 9

square units. Notice that you can divide the rectangle into two squares with equal area. How can you

estimate the side length of each square? Estimate the length and width of the rectangle.

Answers

Answer:

The side length of each square is 2.12 units.

The length ad width of the rectangle are 2.12 and 4.24 units

Step-by-step explanation:

Let the width of the rectangle is x,

So, the length of the rectangle is 2x.

Area of the rectangle = 9 sq. units

[tex]9 = 2x \times x[/tex] [as area = length x width]

[tex]\Rightarrow 9 = 2x^2[/tex]

[tex]\Rightarrow x^2 = \frac{9}{2}=4.5[/tex]

[tex]\Rightarrow x = 1.5\sqrt{2}=2.12[/tex] units

So, width of the rectangle, x= 2.12 units and

the llengthof the rectangle, 2x= 2 x 2.12= 4.24 units.

After division of the rectangle into two equal square, so, the area of each square will be half of the area of the rectangle.

The area of the rectangle = 9/2=4.5 square units.

Let a be the length of the sides of the square, so

Area [tex]= a^2[/tex]

[tex]\Rightarrow a^2=4.5[/tex]

[tex]\Rightarrow[/tex] [tex]a = 1.5\sqrt{2}=2.121[/tex]

Hence, the side length of each square = 2.12 units.

Can someone help explain this To me? I need help

Answers

Answer:

x=18

Step-by-step explanation:

XZ/RT=XY/RS

60/40=(5x-3)/(3x+2)

1.5=(5x-3)/(3x+2)

1.5(3x+2)=5x-3

4.5x+3=5x-3

9=0.5x

18=x

-c + 5d + 7c - 11d + d - 3c

Answers

The anwser is -4c + 2d

Answer:

3c-5d

Step-by-step explanation:

x+7<13.
^^^^^ answer please & show work .

Answers

Step-by-step explanation:

find the exact values of the following, giving your answers as fractions.

Giving brainliest to the first person to get all right :)

Answers

Answer:

Step-by-step explanation:

The rule for making a negative exponent positive is to take whatever the negative variable is on and put it under a 1.

[tex]3^{-2}=\frac{1}{3^2}=\frac{1}{9}[/tex]

Do that for the next 2:

[tex]4^{-3}=\frac{1}{4^3}=\frac{1}{64}[/tex]

and

[tex]2^{-6}=\frac{1}{2^6}=\frac{1}{64}[/tex]

what is 1/2- 1 and 1/5​

Answers

Answer:

-0.7 is the answer to your question

Answer:

Answer:

-0.7 is the answer to your question

Step-by-step explanation:

17.546 rounded to the nearest hundred

Answers

Answer:

17.55

Step-by-step explanation:

tenths are 1 to the right of the decimal hundredths are 2 places right of the decimal and thousands are 3 times right of the decimal

17.546 rounded to the hundredths is 2 times to the right and there is a 5 that rounds it up to 17.55

Answer:

17.55

Step-by-step explanation:

Hundredth .05-0.09 is 0.1 but 0.04 and lower is 0

Which description could be written as a linear function?
a) eight more than twice a number
b) three more than the product of two numbers
c) ten more than the square of a number
d) nine more than one divided by a number

Answers

Question:

Which description could be written as a linear function?

Answer:

Option a)

Explanation:

Let 2 numbers be x1 and x2.

For the first option:

Eight more than twice a number.

The graph would be y = 8 + 2x1 which is a linear function.

For the second option:

Three more than the product of two numbers.

The graph would be y = 3 + x1x2 which is a graph function.

For the third option:

Ten more than the square of a number.

The graph would be y = 9 + (x1)² which is a graph function.

For the fourth option:

Nine more than one divided by a number.

The graph would be y = 9 + 1/x1 which is a double-parabole function.

Hopefully this answer will help you.

Answer: option a

Step-by-step explanation:

Just took the test

12. ROS
CALCULATE THE ARC
LENGTH. ROUND TO THE
NEAREST TENTH.
180
63 11
IQ
S

Answers

Answer:

576.97

Squared

Together, Linda and Penny sold 492 boxes of Girl Scout cookies. Penny
sold 48 more boxes than Linda. How many boxes did Linda sell?

Answers

Answer:

222

Step-by-step explanation:

Let L = number of boxes Linda sold.

Let P = number of boxes Penny sold.

The sold a total of 492 boxes.

L + P = 492

Penny sold 48 more boxes than Linda.

P = L + 48

Substitute P with L + 48 in the first equation and solve for L.

L + L + 48 = 492

2L + 48 = 492

2L = 444

L = 222

Answer: Linda sold 222 boxes.

Check:

Penny sold 48 more boxes, so she sold 222 + 48 = 270.

Add the numbers they sold: 222 + 270 = 492

The difference is 48, and the total is 492. Our answer is correct.

What is an equation of the line that passes through the points (-2,-5) and (4,7)

Answers

-2+5=4+7 FINALLY ANSWER

Answer:

y=2x-1

Step-by-step explanation:

the other person is wrong

The difference between a number x and 17 is 24.

Answers

Answer: X=7

Step-by-step explanation: X+17=24 subtract 17 from both sides and you would get X=7

could someone help me out with this problem I'm not that great at math​

Answers

Answer:

Obtuse.

Step-by-step explanation:

choose 3 decimals that are greater than 1⁄2, but less than 1

Answers

Answer:

0.6 ; 0.7 ; 0.8

Step-by-step explanation:

Change all numbers given to decimals:

1/2 = 0.5

1 = 1.0

Any number that fits x in 0.5 < x < 1.0 is your answer.

Answer choices:

0.6

0.7

0.8

etc.

~

Answer:

0.6, 0.7, 0.8, 0.9

Step-by-step explanation:

1/2 is 0.5 in decimal form. So, decimals that are greater than 0.5 but less than 1 are:

0.6, 0.7, 0.8, and 0.9 etc.

what -45 divided by 75

Answers

Answer:

-0.6

Step-by-step explanation:

The answer is negative because -45 was a negative number.

I didn't explain that very well :|

Hope I helped :)

Can I get Brainliest anyway, even though I did a terrible job explaining? .-.

the answer is -0.6 or -3/5

Hannah bought a sweater on sale for $24. If that was a fourth of the original price what is the original price?

Answers

Answer: 6$

Step-by-step explanation:

well 24 * 4 is 96. so $96

(I WILL GIVE BRAINLYIST)

A student solves the inequality -50 > 55. Each step in the student's solution is shown below. Identify where the student made any errors. ​

Answers

Answer: pick b

Step-by-step explanation:

Answer:

Step 2 and 3

Step-by-step explanation:

:)

what is the constant of proportionality of p=5a

Answers

Answer:

=5x

Step-by-step explanation:

your question might have a different variable witch is the letter at the end

Can someone help with this?

Answers

Answer:

B

Step-by-step explanation:

Because it has to be less than or no more than $100

Answer:

8=D

Step-by-step explanation:

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