1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vladimir2022 [97]
2 years ago
7

I have a two digit number the sum of the digits is 12 the first digit is 4 Less Than 3 times the second what is my number​

Mathematics
1 answer:
nignag [31]2 years ago
3 0

Answer:

84

Step-by-step explanation:

Let the first digit = x

Let the second digit =y

x + y = 12

x + 4 = 3*y

===========

From the second equation, we learn that x = 3y - 4

Put that into the first equation.

3y - 4 + y = 12          Combine the left side

4y - 4 = 12                Add 4 to both sides

4y = 16                     Divide by 4

4y/4 = 16/4        

y = 4  

=================

x + 4 = 12

x + 4 - 4 = 12-4

x = 8

So the number is 84

You might be interested in
Define a variable for the unknown quantity below.
stira [4]

Step-by-step explanation:

Gladys blister is luggage

5 0
3 years ago
What's the simplified form of this expression? 3-[-2/3 x (7 +2) =11]
svetoff [14.1K]

Answer:

x = 4/3

Step-by-step explanation:

7 0
3 years ago
Thuy rolls a number cube 7 times. which expression represents the probability of rolling a 4 exactly 2 times?
Nady [450]
The result of rolling a number cube 7 times is a 7-digit number composed of digits 1,2,3,4,5 and 6 so that digits can repeat. The total number of possibilities is 6^7.

The number of possibilities where 4 appears exactly two times is 5^5*(7!-6!/2).
 5^5 is the number of 5-digits numbers composed of digits 1,2,3,5 and 6 so that digits can repeat.
7! is the number of permutations of digits 1,2,3,4,4,5 and 6.
6! is the number of permutations of digits 1,2,3,{4,4},5 and 6.
We don't want to subtract all numbers where digits 4 appear side by side. That's why we must divide 6! by 2.

Finally, the probability is P=5^5(7!-6!/2)/7^7
6 0
3 years ago
Read 2 more answers
270 peaches are placed into three groups: small peaches,
Ghella [55]

Answer:

$0.45

Step-by-step explanation:

ratio is 2:4:3

total is 9

270 ÷ 9 = 30

smoll

60 × 0.25 = $15

med

120 × 0.30 = $36

Big

91.50 - 15 - 36 = 40.5

40.5 ÷ 90 = $0.45

4 0
2 years ago
(–9) • (8) – (9) • (–9)
elena-s [515]

Answer:

10

Step-by-step explanation:


7 0
3 years ago
Other questions:
  • Given a sphere with a radius of 5 cm, find its volume to the nearest whole number.
    10·1 answer
  • Simplify the expression. 8x + 7 – 3x
    8·2 answers
  • A baker used 4 cups of flour to make 5 batches of brownie. How many cups of flour does the baker need to make 1 batch of brownie
    13·2 answers
  • Identify the x-intercept and y-intercept of the line 4x−2y=0
    8·1 answer
  • In 1992, Jason bought a gallon of gas for $1.21. Yesterday, he bought a gallon of gas for $2.08. What is the percentage increase
    9·1 answer
  • The tigers football team had a 2 yard loss followed by a 4 yard loss what was the total change?
    11·2 answers
  • Help me pleaseeeeeeeeeeee
    12·1 answer
  • Please help me thank you
    9·2 answers
  • Using the interquartile range (IQR), determine if the data set contains any outliers. name the outlier or choose no outliers. {6
    6·2 answers
  • Please help!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!