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2 years ago

Which expression is equivalent to (3x + 4) - (7x + 2)?

Mathematics

1 answer:

kozerog [31]2 years ago

3 0

Answer:

-4x - -2

Step-by-step explanation:

its hard to explain sorry

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A company charges 0.10 for each letter engraved bobby plans to spend no more than 5.00 on the engraving on a jewelry box right a

zlopas [31]

Answer:

the maximum number of letters he can engrave is 50.

Step-by-step explanation:

A company charges $0.10 for each letter engraved bobby plans to spend no more than $5.00 on the engraving.

The maximum number of letters he can engrave can be done by division

5/0.10

= 50 letters.

8 0

3 years ago

Roster method of A = {x | x is an odd number and 20 < x < 30}

Sunny_sXe [5.5K]

A "roster" here is essentially a version of the set with all of elements listed out. Here, those elements are all of the odd numbers between 20 and 30, so our list would be

{21, 23, 25, 27, 29}

3 0

3 years ago

In the equation x+12=30 does x=16 explain your answer

denpristay [2]

No x does NOT equal 16. you would substitute x for 16 which gives you 16+12. That equals 28 not 30. The correct answer is x=18

4 0

2 years ago

Ho do you get the Surface Area of this shape?

blsea [12.9K]

This solid object contains 8 sides.

The side that is facing you has a surface area:

$64f{ t }^{ 2 }+84f{ t }^{ 2 }=148f{ t }^{ 2 }$

The side exactly opposite this one has the same surface area - 2 sides with this surface area in total.

The bottom side has a surface area:

$84f{ t }^{ 2 }$

The side to your right has a surface area:

$84f{ t }^{ 2 }$

The side to your left has a surface area:

$48f{ t }^{ 2 }$

The side to your top left has a surface area:

$48f{ t }^{ 2 }$

The side beside the side to the top left has a surface area:

$36f{ t }^{ 2 }$

The side at the very top has a surface area:

$36f{ t }^{ 2 }$

Combined, the surface area is:

$S=2\cdot 148f{ t }^{ 2 }+2\cdot 84f{ t }^{ 2 }+2\cdot 48f{ t }^{ 2 }+2\cdot 36f{ t }^{ 2 }$

$\\ \\ =296f{ t }^{ 2 }+168f{ t }^{ 2 }+96f{ t }^{ 2 }+72f{ t }^{ 2 }\\ \\ =632f{ t }^{ 2 }$

Therefore the answer is: C

7 0

2 years ago

Mrs. Cook is a teacher whose salary is $23,125 for a 185-day school year. In Mrs. Cook's school district, substitute teachers ar

yawa3891 [41]

Answer:

Step-by-step explanation:

23,125/185= 125

125-90 = 35

5 0

3 years ago