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mr Goodwill [35]
3 years ago
15

Simplify the expression. 7(x - 1) - 2(x + 1) + 3( x - 4) =

Mathematics
2 answers:
lawyer [7]3 years ago
8 0
7x-7-2x-2+3x-12=8x-21
  I think
KonstantinChe [14]3 years ago
3 0
8x-21 is the correct answer
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Which equation represents a proportional relationship that has a constant of proportionality equal to –10? y = x minus 10 y = x/
kicyunya [14]

Answer:

y=-10x

Step-by-step explanation:

y=-10x

y/x=-10

6 0
3 years ago
Find the point-slope equation for the line that passes through the points (5,19) and (-5,-1).
xxTIMURxx [149]

Answer: y - 19 = 2(x - 5)

Step-by-step explanation:

The point slope form is expressed as

y - y1 = m(x - x1)

Where

m represents slope

Slope, m =change in value of y on the vertical axis / change in value of x on the horizontal axis

change in the value of y = y2 - y1

Change in value of x = x2 -x1

y2 = final value of y

y 1 = initial value of y

x2 = final value of x

x1 = initial value of x

The given points are (5,19) and (-5,-1)

y2 = - 1

y1 = 19

x2 = - 5

x1 = 5

Slope,m = (- 1 - 19)/(- 5 - 5) = - 20/- 10 = 2

To determine the equation, we would substitute x1 = 5, y1 = 19 and m= 2 into the point slope form equation. It becomes

y - 19 = 2(x - 5)

7 0
3 years ago
Read 2 more answers
Which is more, 3 yards or 107 inches? 3 yards 107 inches neither; they are equal Submit
MakcuM [25]

We know, 1 yard=3 feet.

1 feet =12 inches.

Therefore, 1 yard in inches is,

\begin{gathered} 1\text{ yard=3 f}eet\times\frac{12\text{ inches}}{1\text{ feet}} \\ =36\text{ inches} \end{gathered}

Hence, 3 yards in inches is.,

\begin{gathered} 3\text{ yards=3}\times36\text{ inches} \\ =108\text{ inches} \end{gathered}

Therefore, 3 yards is greater than 107 inches.

5 0
2 years ago
Arianna has $0.90 worth of nickels and dimes. She has 4 times as many nickels as
Tanya [424]

Answer:

X=3

Step-by-step explanation:

       0.05(4x) + 0.1x = 0.90

           0.2x + 0.1x = 0.90

                 0.3x = 0.90

                      x = 3

8 0
3 years ago
U={All positive integers that are less than or equal to 30 }​
Alinara [238K]
U = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30}
7 0
3 years ago
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