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Lubov Fominskaja [6]
2 years ago
6

Find the sum of (x-4)+(2x−7)

Mathematics
2 answers:
Vinvika [58]2 years ago
4 0
It is: 3x-11
we have to remove the unnecessary parentheses then we have to expand: x-4+2x-7
Finally we collect the like terms and calculate
that’s why the answer is 3x-11
____ [38]2 years ago
3 0

Answer:

3x - 11

Step-by-step explanation:

( x - 4 ) + ( 2x − 7 )

*it's better to take away the parenthesis

x - 4 + 2x - 7

Combine like terms

( x with 2x, and -4 with -7)

3x - 11

And you cannot simplify it anymore

Hope this helped!

Have a supercalifragilisticexpialidocious day!

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Three men do a certain job in 5 days how long will it take 1 man to do that same job
Elina [12.6K]

Answer:

it depends... is it a scrawny middle schooler? is the man a bodybuilder? is the man short? are the other men strong or fast at the job? if so it changes all variables...

Step-by-step explanation: :)

3 0
3 years ago
Would appreciate the help 24 points
andre [41]

Answer:

13) Rectangle

14) parallelogram

15) co ordinates areD (0,a) andE (c,b)

16) co ordinates are D(0,b) and E(a,0)

17)(-1,1) (4,1) (-1,4)

18)(0,0) (a,0) (a,a) (0,a)

Step-by-step explanation:

<h3>13)</h3><h3>Rectangle</h3>

The opposite sides of a rectangle are parallel and equal

left height = right height

(by using distance formula)

(0,3),(2,-2) = (5,5),(7,0)

√(2-0)²+(-2-3)² = √(7-5)²+(0-5)²

√(2)²+(-5)² = √(2)²+(-5)²

√4+25 = √(2)²+(-5)²

√29 = √29 hence equal

<h3>14)</h3><h3>parallelogram</h3>

The opposite sides of a rectangle are not equal

left height = right height

(by using distance formula)

(0,0),(3,-4) = (3,4),(7,0)

√(3-0)²+(-4-0)² = √(7-3)²+(0-4)²

√(3)²+(-4)² = √(5)²+(-4)²

√9+16 = √(25)+(16)

√(25) ≠√41

5 ≠ √41

<h3>15)</h3><h3>co ordinates are D(0,a) and E(c,b)</h3><h3>16)</h3><h3>co ordinates are D(0,b) and E(a,0) </h3>

since rhombus have equal opposite sides

<h3>17)</h3><h3>(-1,1) (4,1) (-1,4)</h3><h3>18)</h3><h3>(0,0) (a,0) (a,a) (0,a)</h3><h3 />

6 0
3 years ago
It takes Sam 3 hours to rake the front lawn while his brother, Dave, can rake the lawn in 5 hours. How long will it take them to
OleMash [197]

Answer:

3 hours + 5hours = 8 hours ÷ 2 =

4 hours is your answer.

Step-by-step explanation:

If you have 2 people working and need to know how long it would take them to finish a job. Working together on the same job, you add each of their total hours to do the job alone,, 5 + 3 = 8, then divide the 8 by 2 people

equals 4 hours for 2 people on 1 job.

4 0
3 years ago
The ages in years of three brothers are consecutive. The sum of their ages is 39 decreased by the age of the youngest. What are
Sati [7]
Their ages are 18, 19, and 20 bc we is gud at maths boi
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3 years ago
Multiply and simplify. (5 - 3i)(6 + 2i)
AleksandrR [38]
36-8i is the answer.
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3 years ago
Read 2 more answers
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