Mathematics High School

If you add the digits in a two-digit number and multiply the sum by 7, you get the original number. If you reverse the digits in the two-digit
number, the new number is 18 more than the sum of its two digits. What is the original number?
A. 42
B. 24
C. 64
D. 46
Е. 36

Answers

Answer 1

The answer is A. 42

Solution:

Let x= ones digit, y=tens digit

1st condition (original number) : 7(x+y)=10y + x

2nd condition (new number by reversing the digits): 18+x+y=10x+y

simplifying:

1st condition: 6x=3y

2nd condition: x=2

substituting x=2 to 6x=3y

y=4

Answer 2

Answer:

42

Step-by-step explanation:

Related Questions

Jacob used an empty can for a project shown below the pills the label of the king in find the area of the label what is the approximate area of the canned label?

Answers

Answer:

B: 100.53 in²

Step-by-step explanation:

From the image of the can label shown, we can see that;

Height; h = 8 inches

Diameter; d = 4 inches

Thus, radius; r = d/2 = 4/2 = 2 inches

The can is a cylinder and the label covers only the curved surface area. Thus, formula for curved surface area of a cylinder is;

A = 2πrh

Thus;

A = (2π × 2 × 8)

A = 100.53 in²

x 7 9 11 13 y -1 2 5 8 Is the relationship linear, exponential, or neither

Answers

15 is the answer hope this helps

Answer:

it is linear

Step-by-step explanation:

sorry if i'm late but i did it on khan

Mrs. Harrison is 15 ounces of dark chocolate while baking. She used 3/5 of the chocolate to make some frosting and used the rest make brownies. how many ounces did she use to make brownies?

Answers

¹⁶/₅ or 3 ¹/₅ or 3.2 ounces.
15 x 3/5 = 9

15 - 9 =
6 ounces

The equation m=40g gives the distance in miles, m, that a car can travel using g gallons of gas.
B. Write an equation that represents the inverse function: the gallons of gas as a function of distance in miles.
Question: How can I write an equation that represents the Inverse function of this problem?

Answers

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the function.

to get the inverse of the function,

let's consider that y is the function of m

hence, y = m

now, we know that m = 40g

hence, relatively, y = 40g

but to get inverse, we need gallon of gas as function of distance, hence

g = y/40,

since we know that y = m, replace it

hence the new inverse function is,

====> g = y/40

-1.14285714286 in simplest form

Answers

Answer: to the nearest tenth its -1.1

to the nearest hundredth its -1.14

to the nearest thousandth its -1.143

as a percentage its −114.28571428%

-1.1,-1.14,-1.143 is the simplest form of -1.14285714286 in nearest 1oth, 100th and 1000th respectively.

The digit in the smallest location is unaffected if it is less than 5 in number. Rounding down is the process of reducing a number to zero after a certain number of digits. The digit in the smallest location is added with +1 if it is bigger than or equal to 5.

-1.14285714286 is simplified by rounding off

1. It can be rounded to the nearest tenth as -1.1

2. It can be rounded to the nearest hundredth as -1.14

3.  It can be rounded to the nearest thousand as -1.143

Thus, -1.1,-1.14,-1.143 is the simplest form of -1.14285714286

Learn more about round off, here:

https://brainly.com/question/31754034

#SPJ6

Riley has $14 more than Ashton. Peyton has twice as much money as Riley. If Ashton has m dollars, which expression represents the amount of money that Peyton has?

Answers

Answer:

14 times 2

Step-by-step explanation:

2(m+14) because I got big brains trust me

What is the solution to this equation?
-16x= 80
O A. x= -96
O B. x= 96
O C. x = 5
O D. x= -5

Answers

D
Divide both sides by -16 to isolate the x.
80/-16= -5
D, you have to divide -16x by itself and 80. 2 negatives make a positive and one positive and one negative make a negative

Noah has a coupon for 30% off at his favorite clothing store . He uses it to buy a hoodie . The regular price of a hoodie is $27. What did Noah pay for the hoodie?

Answers

Answer:

$18.90

Step-by-step explanation:

The way to do percentages is actually pretty easy.

since it's taking 30% of you are left with 70%. Take 70 and divide it by 100. This gives you .70

Now what you do is you take the price of the time and multiply it by the .70

So 27.00 * .7 = 18.90

So Noah paid 18.90

Determine the period of the function graphed at the right.

Answers

Answer:

Step-by-step explanation:

Find the missing sides of each triangle

Answers

Hi I can help you but I need a bit more information are you adding are you subtracting are you Multiplying

neeed help on this !!!!!!!!!!!!!

Answers

Answer:

5 minutes.

Step-by-step explanation:

The ocean's surface is at 0. Which is farthest from the ocean’s surface?
A.
a fish swimming at -22 feet
B.
a kite flying at 48 feet
C.
a shipwreck at -52 feet
D.
a balloon at 19 feet

Answers

Answer:

C. a shipwreck at -52 feet

Step-by-step explanation:

It is asking which is farthest from the ocean's surface, so we must use absolute value.

[tex] | - 22| = 22 \\ |48 | = 48 \\ | - 52| = 52\\ |19| = 19[/tex]

52 is greater than the others. therefore the farthest away.

Please help me out I am doing this for math and has no clue what to do

Answers

from the three options i can see, i would pick option B.

Help me and please be sure of ur answer.​

Answers

Answer:

1. Evan

2. Stacey

Step-by-step explanation:

Select all the situations that can be represented by an exponential function.
1. Jim deposits $1,000 in an account that doubles in value every 7 years.
2. Brian deposits $30 in a savings account. Then he deposits $2 each month for the next 9 months.
3. Leon runs a mile in 8 minutes. Then he runs a mile each day for the next 4 days, reducing his time by 1.5% each day.
4. Cynthia runs a mile in 9 minutes. Then she runs a mile each day for the next 4 days, reducing her time by 6 seconds each day.
5. Marie deposits $30 in a savings account. Then she makes a deposit each month for the next 9 months, putting in $2 more with each deposit. Please answer with an actual question as fast as you can.

Answers

Answer:

m and ms

Step-by-step explanation:

AABC is a translation of AABC. What is the length of AC'?

A 3 units
B. 6 units
C. 14 units
D. 5 units

Answers

B.) 6?....
This seems too easy for it to be correct but I think it is B.

Answer: It is B.6 Units

Step-by-step explanation: A,C The number in-between.

What is the answer for. 49x^2-25y

Answers

are you sure those are all numbers?

Find the solution to the system of equations. Write the solution as an ordered pair. 3x+2y=-7 and 5x-3y=20

Answers

Answer:

3x+2y=-7

5x-3y=20

8x-y=13

8x-13=0

y-13=0

8x=13

y=13

8x/8=13/8

y=13

x=13/8

y=13

If a = -2, then what is the value of -2a+ 3?


and

If y = 3, what is the value of -3y - 1?

​

Answers

Step-by-step explanation:

1) 7

2) -4

hope this helps

When 3 numbers are multiplied together the answer is 30 when the same 3 numbers are added together, the answer is 0 what are the three numbers

Answers

Answer:

6,5,1 ?

Step-by-step explanation:

c/- 4 = 16
please help

Answers

C=-64


Multiple the equation by -4

3x-5 when x=3 work and answer

Answers

Answer:

when x =3 the answer is 4

Step-by-step explanation:

3(3)-5

3x3=9

9-5=4

Step-by-step explanation:

3×3=9

9+-5=4

I believe it's 4

Find the value of x.

Answers

Answer:

5

Step-by-step explanation:

-------------------------

Answer:

a

Step-by-step explanation:

48=7x+13

step 1 subtract each side by 13

35=7x

step 2 divide each side by 7

x=5

what is 2.5% as a feaction and a decimal​

Answers

the answer is 2 1/2

Find the geometric mean of the numbers. If necessary, give the answer in simplest radical form.
7 and 28

Answers

Answer:

14 = x

Step-by-step explanation:

Please help me someone ?

Answers

Use parentheses to represent infinity or negative infinity, since positive and negative infinity are not numbers in the usual sense of the word and, therefore, cannot be “equaled.” A few examples of an interval, or a set of numbers in which a solution falls, are [−2,6) , or all numbers between −2 and 6 , including −2 , ...

Jada was solving the equation 
6
−
x
=
−
16
6−x
​
=−16. She was about to square each side, but then she realized she could give an answer without doing any algebra. What did she realize?

Answers

The solution Jada seeks does not require any algebra but can be solved to give; x = 22.

How to solve the equation

When solving the given equation;

6 - x = -16

The solution of the equation can be obtained by subtracting 6 from both sides of the equation so that we have;

-x = -16 -6

-x = -22.

Therefore, the value of x is; 22

Read more on equation;

https://brainly.com/question/16863577

Pls help me!!!!

3/4 ton= Ib

Answers

Step-by-step explanation:

2666 and 2/3 ok try thisyeh

Answer:

1,500 lbs.

Step-by-step explanation:

There are 2000 lbs in 1 ton.

[tex]\frac{3}{4}[/tex] × [tex]\frac{2000}{1}[/tex]=     [tex]\frac{6000}{4}[/tex]

6,000 divided by 4 is 1,500

Answer: 1,500 lbs.

describe how you would write an equationof the line in ponit slope form that goes through the points (3,-5) and (-2,10)
Please help guys <3

Answers

Answer:

10-(-5)= m(-2-3)

Step-by-step explanation:

The equation for point slope form is y- y1= m (x- x1)

You would plug in the numbers so y = y coordinate of second point which the second point is (-2,10). The y coordinate is 10. Then, since y1 = y coordinate of the first point the first point being (3,-5), the y1 is -5. You do the same thing with x and x1 being -2 and 3. So the equation should look like this:

10-(-5)= m(-2-3)

That's the answer. I hope this helps!

In the figure MN is a midsegment of JKL. Find the value of X

Answers

Answer:

x = 9

Step-by-step explanation:

Here, we want to find the value of x

To do this, we are going to use the similar triangles principle

When two triangles are similar, the ratio of their corresponding sides are the same

The two similar triangles we shall be using are;

LMN and LJK

Thus, we have it that;

x/8.5 = x+ 9/17

17x = 8.5(x + 9)

17x = 8.5x + 76.5

17x - 8.5x = 76.5

8.5x = 76.5

x = 76.5/8.5

x = 9

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