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noname [10]
2 years ago
8

What is the justification for each step in solving the inequality? -5(4x+6<-18x+6+4x

Mathematics
1 answer:
Daniel [21]2 years ago
5 0
Hi there!

Everything looks correct except for the step to get to -6x < 36. Here you put multiplication property of order, and to get here you have to add 30 to both sides, so it would actually be the addition property of order.

I hope I helped!
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A family decides to put tiles in the entryway of their home. The entryway has an area of 7 square meters. If each tile is 5 cent
lyudmila [28]

9514 1404 393

Answer:

  2800 tiles

Step-by-step explanation:

Each tile has an area of (0.05 m)² = 0.0025 m². Then the number of tiles required to cover 7 square meters is ...

  (7 m²)/(0.0025 m²/tile) = 2800 tiles

It will take 2800 tiles to cover the entryway.

8 0
2 years ago
A teacher asks four students to solve the expression (-6) – 9. The table shows each student's response
vagabundo [1.1K]

Answer:-15 is correct

Step-by-step explanation:

(-6)-9 is the same as -6-9 since parenthesis aren’t really needed in thins case and if you use the order of operations you go left to right. So, -6-9=-15 because a negative- a negative= a negative.

7 0
3 years ago
1. Devin is making a candle by pouring melted wax into a mold in the shape of a square pyramid with base sides of 9 cm and the h
Tasya [4]
The number of cubes that Devin will need to make will be given by:
(volume of each pyramid wax)/volume of cube
volume of cube=length*width*height
                        =4×4×4
                        =64 cm³
volume of the candle=1/3π*(base area)*h
=1/3×(9×9)×10
=270 cm³
number of cubes needed
270/64
=4.21875~4.23 cubes
8 0
2 years ago
What is the answer to this 5+5x=-2x+5=?
aleksklad [387]
5x = -2x
5x + 2x = 0
7x = 0
x = 0
8 0
3 years ago
Read 2 more answers
NEED HELP ASAP PLEASE!!!
maks197457 [2]

Answer:

its seven

Step-by-step explanation:

5 0
2 years ago
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