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Verizon [17]
1 year ago
14

There is a number written on the board.

Mathematics
1 answer:
Sliva [168]1 year ago
7 0

The number written on the board is 2 2/5

<h3>What are linear equations?</h3>

A linear equation is an equation in which the highest power of the variable is always 1. The standard form of a linear equation in one variable is of the form Ax + B = 0. where, x is a variable, A is a coefficient and B is constant. The standard form of a linear equation in two variables is of the form Ax + By = C. where, x and y are variables, A and B are coefficients and C is a constant.

represent the number on the board by x, the result of the second student by y , therefore the result of the first student is 2y

solving for the first student, 12+x= 2y

for the second student , 3x= y

substituting 3x for y in first equation

12+ x= 2(3x)

12+x= 6x

collecting like terms

5x= 12

divide both side by5

x= 12/5= 2 2/5.

Therefore the number on the board is 2 2/5

learn more about linear equation from

brainly.com/question/14323743

#SPJ1

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A 16−oz bottle of parmesan cheese costs $5.78, while an 8−oz bottle costs $3.97. Which is the better buy? Round your answer to t
LUCKY_DIMON [66]

Answer:

The 16-oz bottle of parmesan cheese is the better buy.

Step-by-step explanation:

Even though 8-oz is half the amount of 16-oz, that doesn't mean it's cheaper. Let's find the amount of and 8-oz bottle when a 16-oz bottle is $5.78:

16-oz bottle of parmesan cheese = $5.78

A price of an 8-oz bottle when 16-oz is divided by 2:

16 ÷ 5.78 = $2.76

The original price of the 8-oz bottle should've been $2.76 but it's more expensive due to VAT.

So the 8-oz bottle is more expensive, therefore the 16-oz bottle is the better buy!

8 0
3 years ago
- b. Yolanda played a new number game with Xavier. She used this equation to generate her response to each number Xavier said: y
Arisa [49]

(a) One possibility is 8.45

Rounded to the nearest integer = 8

Rounded to the nearest tenth = 8.5

And rounding this to the nearest integer = 9

 

(b) The possible numbers are 8.45 to 8.49, inclusively

3 0
3 years ago
Read 2 more answers
! What are modern numbers? and how are they used?
Cerrena [4.2K]

Modern numbers are the ten numerical digits used in constructing other numbers.

<h3>What are modern numbers?</h3>

Modern numbers are also called Arabic numerals. They are the ten numerical digits:

0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.

Uses of modern numbers;

  • They are used as symbols to write decimal numbers.
  • They are used in writing numbers in other systems like the octal, and for writing identifiers such as computer symbols, trademarks, or license plates.
  • They are used in constructing other numbers.

Hence, modern numbers are the ten numerical digits used in constructing other numbers.

Learn more about modern numbers here:

https://brainly.in/question/20910128

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7 0
2 years ago
Find the measure of each angel if m angle 8 = 115º
zalisa [80]
Lines p and q are parallel.
Corresponding angles are congruent.
Each two adjacent angles are supplementary.
Vertical angles are congruent.

Angles 7 and 8 are adjacent, supplementary angles.
m<7 + m<8 = 180
m<7 + 115 = 180
m<7 = 65

Angles 6 and 8 are corresponding angles and congruent.
m<6 = m<8
m<6 = 115

Angles 1 and 6 are vertical angles and congruent.
m<1 = m<6
m<1 = 115
7 0
3 years ago
19+13x=32 plz help A:1 B:3/12/13 C:169. D:663
kumpel [21]

Answer: A

Step-by-step explanation:

19+13x+32

13x=32-19

13x=13

x=1

8 0
3 years ago
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