Great Free Practice Problems
(these problem is all "find the number" problems)

1. In a two-digit number, the tens digit is 5 less than the unit digit. The number itself is five more than three times the sum of its digits. What is the number?

2. The sum of digits of a two-digit number is 11. The reverse number is 9 greater than the original number. Find the reverse number.

3. The sum of the digits in a two-digit number is 14. If you reverse and double the original number, and then add the results to the original number, the sum is 222. Find the original number.

4. The unit digit of a two-digit number is four more than the then digit. If the number is doubled it will be q more than the reversed number. Find the number

5. In a three-digit number, the tens digit is the same as the hundreds digit. The ones digit of this number is equal to 1/3 of the sum of the other two digit. Find the number if the sum of all its digits is equal to 24

6. In a two-digit number, the units digit is six less than three times the tens digit. Four times the unit digit minus five times the tens digit equals 11. Find the digits.

Please answer all the problems ;)

Answers

Answer 1

Answer:

1) 38

2) 56

3) 86

4)  37

5) 6 i think

6) 93

Step-by-step explanation: sorry if any of these are wrong

Answer 2

Answer:

The answer is 38. Sorry if it's wrong.


Related Questions

Which of the h values are solutions to the following equation? h^2=.36

Answers

Answer:

h=0.6, -0.6

Step-by-step explanation:

take the root of both sides and solve

A local sorority sold hot dogs and bratwursts at the spring fling picnics. The first day they sold 8 dozen hotdogs and 13 dozen bratwursts for $330.00. The second day they sold 10 dozen hot dogs and 15 dozen bratwursts for a total of $390.00 how much did each cost?

Answers

Answer:

Hotdogs are $12.00 for the dozen or $1.00 each

Bratwursts are $18.00 for the dozen or $1.50 each

Step-by-step explanation:

PLEASE HELP THIS ASSIGNMENT IS OVERDUE

Answers

Answer:

Jason is incorrect the caterpillar's rate is 4 feet per minute.

Step-by-step explanation:

To find the unit rate:

24 ÷ 6= 4

Therefore the unit rate is 4 feet per minute.

Answer:

Jason is incorecnt. The cattepillarss rate is 4 feet per minute

Step-by-step explanation:

What I did was 24 devidided by 6 and got four so it must be four feet per minute. To check this I did four times six and got 24

If a fir tree is 24 feet tall and casts a shadow 45 feet long, then how long of a shadow will be
cast by a nearby marble column that is 32 feet tall?

Answers

Answer:

60 feet

Step-by-step explanation

24/45=32/h

24h=45x32

h=60 feet

If x + y = 13 and y = 2, then which of the following is true according to the
substitution property?
A) 2 + y = 13
B) x = 13 - y
NICy = 13 - x
OD) x + 2 = 13

Answers

Answer:

OD) x+2=13

Step-by-step explanation:

you would plug in the y substitute which would be 2, making the equation x+2=13

:) hope this helps lol

Answer:

X+2=13

Step-by-step explanation:

We know that x+y=13 when added. We also know that y=2. To find X we can add X to 2 to get 13. X=11

When I divide my number by 8 and are my number I get 90. What is my number?

Answers

Answer:

720

Step-by-step explanation:

90x8=720

720/8=90

HOPE THIS HELPS BROSKI~

To solve the inequality 9x >-4, the inequality sign must be reversed.

True

OR

False​

Answers

Answer:

false

Step-by-step explanation:

you only need to reverse the sign when you are dividing by a negative number

Answer: False?

Step-by-step explanation:

What is the y-intercept of the function f(x)=4 - 5x?
-5
-4
4
5

Answers

Answer:

4

Step-by-step explanation: Its  4 becuase you plug in the zero like this'

f(x)=4-5(0)

f(0)=4-0

f(0)=4

So it will (0,4)

17 tens in standard form add

Answers

170 in unit form
-it can also be said as 1 hundred, 7 tens, and 0 ones to make it easier

The table gives a few x,y pairs of a line, what is x intercept

Answers

Answer:

Intersections of Linear Equations. The intersection of a line are the points where the line intersects, or crosses, the horizontal and vertical axes. The line shown on the graph intersects the two coordinate axes. The point where the line crosses the x-axis is called [x-intercept].

Step-by-step explanation:

In the function y = 5x, what is the value of x?

1) 8
2) There is only one solution for x.
3) It can be any number.
4) It is unknown and can't be found.

Answers

Answer:

3) It can be any number

Step-by-step explanation:

Answer:

3) It can be any number

Step-by-step explanation:

On Wednesday, 45 packages were sent in for pick up. 9 of the packages had the
"fragile" label and 8 of the packages required the recipient's signature. How many
packages did not require signature?​

Answers

Answer:

37

Step-by-step explanation:

Are u supposed to do 45 minus 8= 37

Answer:

45 – 8 = 37  

37 packages did not require recipient’s signature.

Step-by-step explanation:

Also im new can u pls mark me brainliest

Select the correct answer.
A triangle has side lengths of n, n - 3, and 2(n - 2). If the perimeter of the triangle is at least 37 units, what is the value of n?

Answers

Answer:

n = 11

Step-by-step explanation:

Perimeter =  sum of all the sides

n + n - 3 + 2(n-2) = 37 units

n + n - 3 + 2n - 4 = 37             {Combine like terms}

n + n + 2n - 3 - 4  = 37

                 4n - 7 = 37

                       4n= 37 + 7

                       4n = 44

                         n = 44/4

n = 11

HELP! IS THIS PROPORTIONAL

Answers

Answer:

No, it is not

Step-by-step explanation:

It is suppose to be like:

1|4

2|8

3|12

Answer:

no it is not x is not the reason and y us the 6

What is 35% of 80 ?
A
15
B.
24
С
28
D
52

Answers

The answer is C 28 I hope this helped :)

How do you solve 9 7/8 divided by 5 2/3? Explain how you used math to determine your answer.

Answers

Answer:

Change the mixed fractions to improper fractionsFor any fraction in the form [tex]A\frac{b}{c}[/tex] is equal to [tex]\frac{(A*b)+c}{b}[/tex] so the fractions are [tex]\frac{79}{8}[/tex] and [tex]\frac{17}{3}[/tex] Then in order to divide, change the fraction on the right by flipping it, and then multiply everything [tex]\frac{79}{8} \div\frac{17}{3}=\\\frac{79}{8} \times\frac{3}{17} =\frac{1343}{24}[/tex]

A store is hoping an advertising campaign will increase their number of customers by 30%. They currently have about 80 customers a day.

Answers

Answer:

There will be 104 customers a day, after advertising campaign

Step-by-step explanation:

Current number of customers in a day in shop = 80

After advertising campaign, the customers will increase = 30%

So, new customers will be:

We can find new customers by adding new 30% customers to the current 80 customers.

First find 30% of 80

[tex]30\% \ of \ 30\\=\frac{30}{100}*80\\=24[/tex]

Now, add 24 to current 80 customers.

Number of customers = 80+24 = 104

So, there will be 104 customers a day, after advertising campaign

heellpp me pls which equation can be used to solve the problem .60 percent of what number is 30 .

60x2 = 120
--------- this is a
30x2 = 60


30 divide 1 = 30 this is b
----------------
60 divide 1 = 60


60 divide 2 = 30
----------------- this is c
100 divide 2 = 50


100x2=200
---------- this is d
30x2 =60



NOTE pls vote and do not guess i will brainest you if right

Answers

Answer:

it is C because first let say the missing number is y and the equation is 60/100 x Y = 30 , we dived 60/100 for each and tht means ,60/100Y/60/100=30x100/60 ,we cancel the first by it self and Y will be alone ,Y=3000/60= 50. try my best.

Answer:

C 30/50

Step-by-step explanation:

30/50 is 0.6

That is correct.

Hope this helps :D

Which is the surface area of the cube?

Answers

96 sq m (A)

6(4*4)=96
The area of something is squared.

1. Which of the following is the standard form of y = (x – 3)(x – 7)?
a. y = (x + 5)2 – 21
b. y = (x - 5)² - 4
c. y = (x + 5)2 - 4
d. y = (x – 5)2 + 28
A
B

Answers

9514 1404 393

Answer:

  b.  y = (x - 5)² - 4

Step-by-step explanation:

Here, we take "standard form" to mean "vertex form."

In the US, "standard form" would be ...

  y = x² -10x +21

Vertex form is ...

  y = (x -5)² -4 . . . . matches B

help me pls thank you

Answers

Answer:

discrete

Step-by-step explanation:

This graph is discrete. A discrete graph has separate values, which are represented by multiple unconnected points. In continuous graphs, the values are all connected to each other. If this graph was continuous, then we would see a line rather than separate dots. The graph can also not be neither continuous nor discreet because it passes the vertical line test, meaning that it is a function.

Hope this helps :)

need to pick three options. please need help on this​

Answers

the 4th one is the answer

Manuela is having mugs made for a fundraiser. The Cup Company will make them for $4 each plus a $30 set-up charge. Mugs Are Us will make them for $4.50 each with no set-up charge. At what amount of mugs will the price be the same for both companies?

Answers

Answer:

The price will be the same for both companies at 60 mugs

Step-by-step explanation:

The form of the linear equation is y = m x + b, where

m is the rate of changeb is the fixed amount

Assume that the number of mugs is x and the total cost of them is $y

∵ The Cup Company will make them for $4 each plus a $30

   set-up charge

∴ The cost per mug = $4

m = 4

∴ The fixed amount = $30

b = 30

∵ x is the number of mugs

∵ y is the cost of them

→ Substitute the values of m and b in the form of the equation

y = 4x + 30 ⇒ (1)

∵  Mugs Are Us will make them for $4.50 each with no set-up charge

∴ The cost per mug = $4.50

m = 4.5

∴ The fixed amount = 0

b = 0

∵ x is the number of mugs

∵ y is the cost of them

→ Substitute the values of m and b in the form of the equation

∴ y = 4.5x + 0

y= 4.5x ⇒ (2)

∵ The price be the same for both companies

→ Equate the right sides of (1) and (2)

4.5x = 4x + 30

→ Subtract 4x from both sides

∵ 4.5x - 4x = 4x - 4x + 30

∴ 0.5x = 30

→ Divide both sides by 0.5

x = 60

The price will be the same for both companies at 60 mugs

can someone help me please. I have to choose.​

Answers

Answer:

2. underestimate

Step-by-step explanation:

Let U = {a, b, c, d, e, f, g}. Find the complement of the set A below.


A = {a, c, e, g}

Answers

Answer:

[tex]A' = \{b,d,f\}[/tex]

Step-by-step explanation:

Given

[tex]U = \{a, b, c, d, e, f, g\}[/tex]

[tex]A = \{a, c, e, g\}[/tex]

Required

Find the complement of A

The complement of A are elements in the universal  set (U) but not in A.

In other words,

if [tex]A = \{a, c, e, g\}[/tex]

then A' are the elements other than a, c, e and g that are in the universal set

So

[tex]A' = \{b,d,f\}[/tex]

Where A' represents the complement

Individual object in a set are called​

Answers

The individual objects in a set are called the members or elements of the set.

Find the product. 1/8 times 8 to the square root

Answers

Step-by-step explanation:

The product 1/8 times 8 to the square root

Answer:

0.35355339

Step-by-step explanation:

{(2,-1), (4,7), (6,5), (9,-3)}
Is the relation a function? (Select ]
State the domain. If
[ Select)
State the range.
[ Select)

Answers

Answer:

That is a function

Domain: 2,4,6,9

Range: -1,7,5-3

the relation is a function

domain- 2,4,6,9

range--1,7,5,-3

Alyssa missed 64 questions on her multiple choice science final and earned a grade of 68%. How many total questions were on the final exam?

Answers

Answer: 94 questions

Step-by-step explanation:

is                  %

-----      =       -----

of                100

64                68    68 is the percent Alyssa got correct on the exam.

-----      =      -----    64 is the questions she got wrong of an unknown total.

x                 100   x is the unknown variable. (the total questions on the test)                  

Cross multiply to get this: 64*100 = 68x  

                                               6400 = 68x    (Divide by 68 on both sides)

                           You should get about 94.11 after dividing. You have to round as there cannot be have a question. It should be rounded to 94 questions. There are 94 questions and 64 were missed. To check your work, do 64/94. This should give you about 68% after rounding.

                                               

The graph shows the distribution of the number of text messages young adults send per day. The distribution is approximately Normal, with a mean of 128 messages and a standard deviation of 30 messages.

What percentage of young adults send more than 158 text messages per day?

16%
34%
68%
84%

Answers

Answer:

16%

Step-by-step explanation:

From the graph of distribution of the number of text messages

Young adults send more than 158 text messages per day is 16%

Given :

The distribution is approximately Normal, with a mean of 128 messages and a standard deviation of 30 messages.

Given 158 text messages . so x is 168

Now we find out z -score

[tex]z=\frac{x-mean}{standard\; deviation }[/tex]

Replace the values and find out z

[tex]z=\frac{158-128}{30} =1[/tex]

the value of z=1

Lets use the standard deviation table that gives area on the left

the table gives the percentage of adults less than 158

z-score value for z=1 is 0.8413

Now, percentage of young adults send more than 158 text messages  

Percent (more than 158)=1- P(less than 158)=[tex]1-0.8413=0.1587[/tex]

To get percentage we multiply by 100

[tex]0.1587 \cdot 100= 15.87= 16[/tex]

Young adults send more than 158 text messages per day is 16%

Learn more : brainly.com/question/24298474

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