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Rufina [12.5K]
2 years ago
5

1. (3x3 + 3x2 - 4x + 5) + (x2 – 2x + x 4) |

Mathematics
2 answers:
Slav-nsk [51]2 years ago
8 0

Answer:

20-4x

Step-by-step explanation:

3x3+3x2-4x+5

9+3x2-4x+5

9+6-4x+5

20 - 4x

KonstantinChe [14]2 years ago
6 0

Answer:

x^{2} + 3x^{3} + 4x^{2} - 6x + 5

Step-by-step explanation:

first remove the parentheses

then add the like terms

lastly reorder the terms

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The coordinates of AB are A(-5, -1) and B(-2, -6). If AC : CB = 3 : 7, what are the coordinates of point C?
bixtya [17]

\text{Let the coordinates of AB are }A(-5,-1), \text{ and }B(-2, -6)\\
\\
\text{let the coordinate of th point C be (x, y), such that}\\
\\
AC:CB=3:7\\
\\
\text{By the section formula, we know that if P(x,y) lies on a line segment AB}\\
\text{where, }A(x_1,y_1), \ B(x_2,y_2)\text{ and satisfy the ratio, }AP:PB=m:n, \text{ then}

P=\left ( \frac{mx_2+nx_1}{m+n}, \ \frac{my_2+ny_1}{m+n} \right ).\\
\\
\text{So using this formula, we get for the given problem}\\
\\
C=\left ( \frac{3(-2)+7(-5)}{3+7}, \ \frac{3(-6)+7(-1)}{3+7} \right )\\
\\
\Rightarrow C=\left ( \frac{-6-35}{10}, \ \frac{-18-7}{10} \right )\\
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\Rightarrow C=\left ( \frac{-41}{10}, \ \frac{-25}{10} \right )\\
\\
\Rightarrow C=\left ( -4.1, \ -2.5 \right )

Coordinates of the point C is: (-4.1, -2.5)

6 0
2 years ago
Ned and Jack are each saving money for a new smartphone. Ned initially has $65 and plans to save $5.50 per week. Jack does not h
julia-pushkina [17]

Answer:

I'm not sure exactly what you're looking but I would set up the equation like this.

y=65+5.5x   for Ned's equation

y=8.75x       for Jack's equation.

Step-by-step explanation:

This is in y=mx+b format, hopefully it helps!

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Which graphs are functional?
Daniel [21]

Answer:

2 and 5

Step-by-step explanation:

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3 years ago
A benefit of earning an hourly wage instead of a salary is
musickatia [10]

Answer:

B. if you produce more items, you are paid more

Step-by-step explanation:

Hourly wages are significantly less paid wages than salary, however, hourly wages are benefit for those worker who are getting higher hourly wages and they are doing consistent overtime work. As Hourly wages are paid on the number of hours worker work, where number hours and production matter a lot for getting higher wages, however, salary are paid even for non working hours. Hourly wages are beneficial for employer in terms of cost of worker and productivity.

4 0
3 years ago
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