Mathematics College

A number
consisting of
two digits whose sum is 9.
If three times the number is
equal to eight times the
number formed by interchanging
the digits, find the number.​

Answers

Answer 1

Answer:

let the unit digit be x

and the tens digit be y

so x+y = 9 ---> y = 9-x

the number is 10y+x

the number reversed is 10x + y

3(10y+x) = 8(10x + y)

30y + 3x = 80x + 8y

22y = 77x

2y = 7x

2(9-x) = 7x

18 - 2x = 7x

18=9x

x=2

y=7

the number is 72

check:

number is 72

reverse is 27

is 3(72) = 8(27)

Related Questions

Which list shows the plant growth in order from least to greatest?
A. 0.34, 0.3, 0.014, 0.104, 0.003
B. 0.003, 0.3, 0.014, 0.34, 0.104
C. 0.003, 0.104, 0.014, 0.3, 0.34
D. 0.003, 0.014, 0.104, 0.3, 0.34

Answers

Answer:

D

Step-by-step explanation:

the hundredth place should be less than the tenth place and so on.

I LiKE YoUr CuT G what's 4 divided by 5?

Answers

Answer: 0.8% or 80%

Step-by-step explanation: Good luck! :D

Answer:

0.8

Step-by-step explanation:

like your cut g lollllllllllllllllllllllllllllllllllllllll

10) Colleen paid $19.85 per hour for tennis lessons for 3 hours of instruction. If she gave
the instructor $60.00, how much change did she get back?

Answers

Answer:

40.15$

Step-by-step explanation:

subtract 20 from 60, you get 40. then add the 0.15 back. bam! 40.15$. hope this helped!! ^___^

How do we locate the solution of a systems of linear equation?

Answers

Answer:

Graph the two lines and the solution is where the lines intersect.

Step-by-step explanation:

Simple explanation for how to convert fractions to the same denominator

Answers

Answer:

To make the denominators the same we can: Multiply top and bottom of each fraction by the denominator of the other. Ex. we simplified the fraction 2032 to 1016 , then to 58 by dividing the top and bottom by 2 each time, and that is as simple as it can get!

What is the surface area of a cylinder with a radius of 10 cm and a height of 30 cm

Answers

The answer is A≈2513.27cm²

A ratio is... A) the difference between two numbers B) a comparison of two numbers by division C) a comparison of two numbers by multiplication D) the sum of two numbers Help please

Answers

C
.........................

plz answer correctly

Answers

A and b

Hope this helps!!!!!
Brainliest plzzzzz

Deisha saved d dollars last month. This month she saved $8 more than 3 times the amount she saved last month. She saved a total of $141

Answers

Answer:

Step-by-step explanation:

Aria’s father is laying tile in their new kitchen. The length of one side of the room is 17 feet. Each of the tiles has a length of 1 3/10 feet. What is the length of the two tiles placed together?

Answers

Answer:

48ft

Step-by-step explanation:

48ft

Find the value of x ​

Answers

The answer is 76
If this answered help you then please consider marking it as brainliest to help me level up to expert

There is an ample supply of identical blocks (as shown). Each block is constructed from four 1 × 1 × 1 unit-cubes glued whole-face to whole-face. What is the greatest number of such blocks that can be packed into a box that is 6 units tall, 7 units wide, and 8 units deep without exceeding the height of the box?

Answers

Answer:

72

Step-by-step explanation:

The answer is 72 because my teacher gave it to me. I promise i'm legit, and I won't lie. This is the real answer, and if you choose 336, you're probably getting it wrong. That's from Math Olympiad.

linear functions m and p are shown

Answers

Answer:

if it is straight line it's a linear

Write the inverse of the f(x) = 3x + 5

Answers

Answer:

f(x) = 5x +3

Step-by-step explanation:

Answer:

(1 / 3) x + (5 / 3)

Step-by-step explanation:

Jessie spent $10 on 3 hair accessories. Which
point represents this relationship?

Answers

Answer:

A

Step-by-step explanation:

(x, y) = (3, 10) . . . . Point A

answer:a is the answer i’m pretty sure sorry if i’m not correct

- Write 4/12 as a sum of unit fractions
​

Answers

Answer:

Step-by-step explanation:

[tex]\frac{4}{12}=\frac{1+1+1+1}{12}=\frac{1}{12}+\frac{1}{12}+\frac{1}{12}+\frac{1}{12}[/tex]

Factor this polynomial completely 6x^4-30x³-84x²

Answers

Step-by-step explanation:

Given

6x^4 - 30x³ - 84x²

= 6x² ( x² - 5x - 14 )

= 6x² ( x² - ( 7 - 2 ) x - 14 )

= 6x² ( x² - 7x + 2x - 14 )

= 6x² {x(x - 7) + 2 ( x - 7)}

= 6x² ( x - 7) (x +2 )

Hope it will help :)

Answer: 6x² ( x - 7) (x +2 )

Step-by-step explanation:

please help me please i really need help

Answers

Answer:

D

Step-by-step explanation:

multiple by

2*5= 10......

Answer:Multiply by 5

Step-by-step explanation:It's really self explanatory, multiply all inputs by 5 and you should get the output

Look at the attachment

Answers

Answer:

7/8

Step-by-step explanation:

3 1/2x1/4 Calculator!!!!!!! srry if it is not the answer.

Calculate the slope look at pic. Help plz!

Answers

0 if it is parellel to the x axis then the slope is 0

42x^2y^4+18x^4y^9+6x^6y gcf

Answers

Answer:

18x^4 y^9 + 6x^6 y + 42x^2 y^4

Step-by-step explanation:

What is the first step in solving the equation 9m - 2 = 16?
Add 2 to each side.
Subtract 2 from each side.
Divide each side by 9.
Multiply each side by 9.

Answers

Answer: Add 2 to each side

Step-by-step explanation:

9m-2=16

+2 +2

9m=18

add 2 to each side so 9m = 16 + 2

What is the approximate unit price of the Bacon Snacks?
A. $0.65 per pound
B. $1.53 per pound
O c. $2.29 per pound
O D. $7.99 per pound

Answers

Answer:

D. 7.99 perpound

Miranda found out there are 20 drops in 1 mL of medicine. She measured 15 drops of medicine into a measuring cup. How many milliliters of medicine are in her measuring cup?
A:0.75 mill
B: 0.075 mL
C: 0.15 mL
D 1.5 mL

Answers

Answer:

A: 0.75 mill

step-by-step explanation:

15/20 = 75/100

0.75 = 75/100

a landscaper is designing a park in the shape of a kite with a fountain in the center, F. AK = 28 ft, PF=48 ft and F=32 ft. He wants to install a walkway around the border of the park. The inside edge of the walkway will be edged with brick. The bricks are purchased in linear feet. How many linear feet of bricks should he purchaase?

Answers

Answer:

169.9

Step-by-step explanation:

plzz help with 24-28!!!!!!!!!!!!!

Answers

Answer:

24 is an acute angle, thanks for the points, i need them :)

Step-by-step explanation:

Can someone please help me!!

Answers

Answer:

B.

Step-by-step explanation:

Three-fifths of the members of the Spanish club are girls. There are a total of 30 girls in the Spanish club.

Which statements can be used to solve for x, the total number of members in the Spanish club? Select three options.
Three-fifths x = 30
Three-fifths = StartFraction x over 30 EndFraction
Three-fifths (Five-thirds) x = 30 (five-thirds)
(Three-fifths (five-thirds) x = 30 (five-thirds)
x = 50

Answers

Answer:

a d and e

Step-by-step explanation:

Answer:

A, D , E

Step-by-step explanation:

Just to concur with the person above this is the correct answer on edge

Find the slope of 2x+2y=6​

Answers

Answer:

slope= -1

Step-by-step explanation:

What is the slope of this line? WILL GIVE BRAINIEST ANSWER IF YOU ANSWER!!

Answers

Slope/m = 5/4

there an app you can get called Math-way and it’s super helpful with slope!
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