MATHEMATICS MIDDLE SCHOOL

3x - 1 < 2x + 4

What is the solution to the following inequality?

Answers

Answer 1

Answer:

Answer:

3x - 2x -1 < 4

3x -2x <4+1

x < 4+1

x < 5

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Can someone please help with this?
Write 2.789 in word form

Add: 3x(x-y+z) and 2y (x+y-z)

Answers

Answer:

3x^2 + 3xz + 2y^2 - 2yz - xy

Step-by-step explanation:

(1) multiply it to get

3x^2 - 3xy + 3xz and 2yx + 2y^2 - 2yz

add similar variables (-3xy + 2yx)

( the order of the variables doesn't matter xy or yx is the same)

we get -xy

and then after that simplifying we get 3x^2 + 3xz + 2y^2 - 2yz - xy

Answer:

Step-by-step explanation:

hello :

3x(x-y+z) + 2y (x+y-z) = 3x²-3xy+3xz +2yx+2y²-2yz

3x(x-y+z) + 2y (x+y-z) = 3x² -xy+3xz -2yz+2y²

What is 5.38 in its expanded form

Answers

5.38 in expanded form is 5 + 0.3 + 0.08

Expanded form means you have to break it apart into addition.

5.38 in expanded form is:

5 + .3 + .08

Hope I Helped!!!

Jose sneezes 8 times for every 5 burps. At this rate, how many burps will Jose do for 72 sneezes

Answers

45 times.
$(72)/(8)=9$
$9*5=45$

The sum of three consecutive even numbers is 78. What is the first number

Answers

even consecutive numbers are 2 apart
(2,4,6, example)
so they are
n,n+2,n+4
their sum is 78
n+n+2+n+4=78
3n+6=78
minus 6
3n=72
divide 3
n=24
smallest is 24

3x + 3 = 78
3x = 75
x = 25
So the three numbers are 25, 26, and 27.

The mean of a set of data is 45 years. Find the missing numbers in the data set {40, 45, 48, ?, 54, ?, 45}. Explain the method or strategy you used.

Answers

There are 7 numbers. 7 X 45 equals 315. 40+45+48+54+45=232.
315-232=83.

The 2 numbers can each have different values, such as 41 and 42, or 40 and 43. The numbers must add up to 83, though.

1000 at 6% interest for 3 years