The tens digit is twice the units digit. Reverse the digits, add 2 and the new number is 34 less than the original number. Find the original number.
Answers
Answer:
Step-by-step explanation: X and Y represent the digits.
The tens digit is twice the units digit.
The digit in the Tens place has 10× its base value, so we can set up equations to model the information given.
10x +y 10y +x are Original & Reversed numbers
X = 2y means the Tens digits is twice the units digit.
10y + x +2 = 10x +y - 34 models the statement: The reversed number plus two is 34 less than the original number.
Substitute 2y for x to solve for y
10y +2y +2= 10(2y) + y -34
Distribute and combine like terms
12y + 2 = 20y +y - 34
34 +2 = 21y -12y
36 = 9y Divide both sides to find the value of y.
4 = y
X = 2(4) Substitute 4 for y to find x
X = 8
Original number: 84 Reversed number: 48
Substitute into equation model
48 +2= 84 -34
50 = 50
True!
Related Questions
Evaluate 3m - 5 when m=9
Thank you!!’
Answers
Explanation
3(9)-5
3 times 9 is 27
27 minus 5 is 22
The current temperature is 30°C. Over the next eight hours the temperature decreases and then increases, returning back to 30°C. if the temperature initially decrease by 13°C, how much did it subsequently increase?
Answers
Answer:
13°C
Step-by-step explanation:
The number of hours that the temperature fluctuates is irrelevant to the problem.
This problem is asking how many degrees did the temperature increase in order to go back to 30°C after being decreased by 13°C.
Find the new temperature after it decreased:
30°C - 13°C = 17°CIf the temperature after decreasing is 17°C, it needs the same amount it was decreased by to go back to 30°C.
Therefore, the temperature subsequently increased by 13°C to go back to 30°C after being decreased by 13°C.
10 – 7w – 13 – 7w + 15
I need help plsss!
Answers
Answer:
12-14w
Step-by-step explanation:
Write an algebraic expression or equation to represent each word phrase.
Seventeen increased by twice a number, n
Answers
Answer:
2n + 17
Step-by-step explanation:
The graph of g(x) goes through the point (-4, 1) and is parallel to h(x) = 5x - 2 points
8. Determine the symbolic representation of g(x). Express your answer in
slope intercept form. *
Answers
Answer:
[tex]g(x)=5x+21[/tex]
Step-by-step explanation:
The slope of g(x) is 5 because the slope of h(x) is 5 and g is parallel to h.
In point-slope form:
[tex]g(x)-1=5(x+4)[/tex]
Rearranging for slope intercept form:
[tex]g(x)-1=5x+20\\g(x)=5x+21[/tex]
Need this very badly
Answers
Answer:
B) 800 cm^2
Step-by-step explanation:
A=2(wl+hl+hw)
800 = 2(10x15 + 10x10 + 10x15), which is B
Answer:
800 cm^2
Step-by-step explanation:
Help due at 11:59 please help
Answers
Answer:
Step-by-step explanation:
the last choice looks good
Answer: Its the bottom one i believe
Step-by-step explanation:
Domain slope stuff you don't want to hear have a good night :)
What is the center of the circle x² + y2 - 4 = 0?
Answers
Answer:
(0,0)
Desmos graphing calculator is a great way to enter the formula of a circle and see a visual example.
Explanation: The equation for a circle is (x - h)^2 + (y - k)^2 = r^2, where (h,k) is the vertex and r is the radius. Rearranging the given equation, we have that x^2 + y^2 = 4. Therefore, the center of the circle is (0,0), and its radius is 2.
What is the length of AB? 4 units 5 units 6 units 7 units
Answers
Answer:
the answer is 6 units
Step-by-step explanation:
find point A and point B and then just count the units over from
A to B and you will get AB is 6 units
Answer c
Step-by-step explanation: bc its 6 units
The chemical acidity of a solution is measured in units of pH: pH=-log[H+], where [H+] is the hydrogen ion concentration in the solution. What is [H+] if the pH=8.8?
Answers
Answer:
3.5
Step-by-step explanation:
The chemical acidity of a solution is measured in units of pH: pH=-log[H+], where [H+] is the hydrogen ion concentration in the solution. 1.58 x 10⁻⁹ is [H+] if the pH=8.8.
What do you mean by pH ?The term pH is defined as the negative logarithm of the [H+] hydrogen ion.
The isolated hydrogen ion, represented by the symbol H+, hence it is used to represent a proton. Because the bare nucleus can readily combine with other particles like electrons, atoms, and molecules, the hydrogen ion.
The formula for calculating [H+] hydrogen ion is as follows:
pH = - log[H+]
Given pH = 8.8
8.8 = - log[H+]
-8.8 = log[H+]
Taking Antilogarithm Both side
Antilog of [-8.8] = [H ]
By solving above expression [H+]
= 1.58 x 10⁻⁹
Thus, 1.58 x 10⁻⁹ is [H+] if the pH=8.8.
To learn more about the pH, follow the link;
https://brainly.com/question/15289741
#SPJ2
What is 12 divided by 2/3 and why? Please help
Answers
Answer:
8
Step-by-step explanation:
12/3=4
4 times 2=8
Need help pls very important 25 points here for person who gives good answer will get brainlyest
Answers
Answer: D. 2
Step-by-step explanation:
-3t + 6 = 0
1. Subtract 6 from each side
-3t + 6 - 6 = 0 - 6
-3t = -6
2. Divide each side by -3 to isolate t and get the answer to the equation
-3t/-3 = -6/-3
t = 2
You can check your answer by plugging your calculated value back into the equation and evaluating to find that 0 = 0.
7(p+q+9) pleaseee answer I need it done by today
Answers
Answer:
7p+7q+63
hope it helps.
Can someone please help me. It’s hard and I don’t understand.
Answers
9513 1404 393
Answer:
changes by 120 for each copyis 1800 if none are soldStep-by-step explanation:
Let's look at the second question first.
x is the number of copies Chau sells. If he doesn't sell any copies, then x = 0. To find Chau's pay, we use x=0 in the equation, and solve for y.
120×0 +1800 = y
0 +1800 = y
1800 = y
Chau's pay when he sells no copies is $1800.
__
If Chau sells 1 copy, then his pay is ...
120×1 +1800 = y = 1920 . . . . . . . use the equation with x = 1
The increase in Chau's pay is 1920 -1800 = 120.
Chau's pay changes by $120 for each copy he sells.
im stuck on this question i need help
Answers
A marching band sold 350 tins of popcorn for $8 each. Each tin cost the
band $4. How much money did the band make?
$ 1.400
$700
$350
$4.200
Answers
Answer:
The band made $1,400
Step-by-step explanation:
8-4=4
350*4=1,400
Henry Uploaded the photos birthday to a cloud storage system. He feels that it's a safe option for data storage. His friend suggested that there Maybe a disadvantage to cloud storage. Which disadvantage is Henry's friend referring to?
Answers
Answer:
Henry's friend referring to the disadvantage of Privacy.
Step-by-step explanation:
The main disadvantage of cloud storage is:
Your data is no longer in your physical storage while you are using a cloud service. So, who is responsible for ensuring that information is secure? This is a grey field which is still being worked out.
So, Henry's friend referring to the disadvantage of Privacy.
Answer:
E. The data is not under the owner’s direct control.
Step-by-step explanation:
took the test and got it right :)
Work out the area of a rectangle with base,
b
= 15mm and height,
h
= 12mm
Answers
Answer:
15x12=180mm
Step-by-step explanation:
Simon is creating the clay structure shown below. Simon has boxes of clay that each contain 200 of clay. How many boxes of clay does Simon need to open to make the sculpture? A. 3 B. 4 C. 5 D. 6
Answers
Answer:
D.6
Step-by-step explanation:
Graph the linear equation using intercepts. Use a graphing calculator to check your graph.
equations: y= 2/3 x (-4)
y= 1/9x (-3)
Answers
Answer:
desmos .com
Step-by-step explanation:
The auditorium holds 200 people. Tickets cost $12 at the door and $8.50 if purchased in advance. The Honor Society has a goal of selling at least $1000 worth of tickets to the show.
Write a system of inequalities that can be used to model this scenario.
If 50 tickets are sold in advance, what is the minimum number of tickets that must be sold at the door so that the club meets its goal?
Answers
Answer:
they have to sell 575 tickets so they could reach their goal.
What’s the answer to this question ? 4.4y - 5x = -8
Answers
what do you want us to solve for? Step-by-step explanation:
What is the measure of
RST?
Answers
Answer:
D. 47
Step-by-step explanation:
what's $90.94 with 50% off..?
Answers
Answer:
Write 50% as a decimal number:
STEP 2: Multiply by 90.94:
Step-by-step explanation: answer is 49.47
Answer:
45.47$
Step-by-step explanation:
50% means to cut things off by half
−6 2/1 −(−2 8/1 )+3 3/2
Answers
Answer:
simplify the expression.
Exact Form:
13/2
Decimal Form:
6.5
Mixed Number Form:
6 1/2
Step-by-step explanation:
plz give me brainlyest
Answer: 6 1/2
Step-by-step explanation:
-6 2/1 - (-2 8/1 ) + 3 3/2
-8 - (-10) + 4 1/2
-8 + 10 + 4 1/2
2 + 4 1/2
6 1/2
I didn't really understand some stuff but I think I did this right.. hope this helps!
HELPPppPpPPpppppppp BRAINLIESTTTT
Choose the inequality symbol (>,
<
=
Answers
I don’t need a brai
Maribel sold 20% of the cupcakes she made. If she sold 35 cupcakes, then she made how many
cupcakes in all.
Answers
Answer:
20% x 5= 100%
35 x 5= 175
she has a total of 175 cupcakes
What property does
(3 + 19) – 12 = 3 + ( 19 – 12)
represent?
Answers
Answer:
associative property
Step-by-step explanation:
The vertices of a triangle are (3,5), (-7,4) and (10,-2) then, what are the coordinates of the point of intersection of 3 medians of triangle?
Answers
Answer:
Step-by-step explanation:
Step 1: Identify the coordinates of each vertex. Step 2: Add all the x values from the three vertices coordinates and divide by 3. Step 3: Add all the y values from the three vertices coordinates and divide by 3. Step 4: Determine the centroid coordinate.
Solve for x
54 = 9(x+3)
Answers
Answer:
x=3
Step-by-step explanation:
54=9(x+3)
54=9x+27
27=9x
3=x
hope this helps! let me know if you have any questions abt how i solved