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Molodets [167]
3 years ago
15

How are expressions and equations different ?

Mathematics
2 answers:
san4es73 [151]3 years ago
6 0
Expressions have no equal sign and a Equation has a result.
disa [49]3 years ago
3 0

The primary difference between equations and expressions is equal signs. An "equation" has a left side, a right side and an equals sign separating the sides. An expression however, we are not expected to do or solve anything.

For example:

3x - 7 = 2

This is an EQUATION, because it has a left side, a right side, and an = sign separating the two.


3x - 7

This is an EXPRESSION, because there are no "sides" and no = sign

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The product of two consecutive positive integers is 29 more than their sum. Find the integers
Rina8888 [55]
The consecutive positive integers would be: x and (x+1),
We would have to solve the following equation to find these numbers:
x(x+1)-[x+(x+1)]=29
x²+x-2x-1=29
x²-x-30=0
x=[1⁺₋√(1+120)]/2
x=(1⁺₋11)/2
We have two possible solutions:
x₁=(1-11)/2=-5    then: (x+1)=-5+1=-4  This is not the solution.
x₂=(1+11)/2=6    then: (x+1)=6+1=7    This solution is right.

Answer: the numbers would be 6 and 7. 
7 0
2 years ago
I need help I would really thank whoever answers this for me
Mars2501 [29]
To do these problems, you plug in the ‘n’ value given into the equation.

a. 6j - 3 : j = 4
6(4) - 3
24 - 3
21

b. 1/2b + 5 : b = 14
1/2(14) + 5
7 + 5
12

c. 8 + 4k : k = 3.5
8 + 4(3.5)
8 + 14
22
6 0
2 years ago
Read 2 more answers
Suppose 40% of all college students have a computer at home and a sample of 64 is taken. What is the probability that more than
Art [367]

Answer:

0.13093

Step-by-step explanation:

Give. That :

Population mean = 40% = 0.4

Sample size (n) = 64

Probability that more than 30 have computer at home

Mean = np = 64 * 0.4 = 25.6

Standard deviation = sqrt(n*p*(1-p)) = 3.919

P(x > 30)

USing the relation to obtain the standardized score (Z) :

Z = (x - m) / s

Z = (30 - 25.6) / 3.919 = 1.1227353

p(Z < 1.122) = 0.13093 ( Z probability calculator)

6 0
2 years ago
20!! points .Given Angles ∠C Number of equal
morpeh [17]

Answer:

100°

Step-by-step explanation:

Total angle in a triangle is 180

∠C = 180 - 20 - 60

= 180 - 80

= 100

3 0
3 years ago
What is the solution to this system of linear equations?
alexandr1967 [171]

Answer:

A. (-1 , 3)

Step-by-step explanation:

          2x + y = 1

plus    3x - y = -6

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

5x = -5

x = -1

y = 1 - (2*-1) = 3

3 0
2 years ago
Read 2 more answers
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