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3 years ago

Simplify the following expression (3x-5)(4-9x)+(2x+1)(6x^2+5)

Mathematics

1 answer:

timama [110]3 years ago

6 0

Expand out the brackets and simplify, largest indices first.
12x³-21x²+67x+30

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If the slope of the line is 3, indicate whether the line through the point rises, falls, horizontal, or vertical

RSB [31]

Answer:

the line rises from left to right

Step-by-step explanation:

the slope is a positive number, therefore it will be rising, not dropping/falling, or going down.

5 0

3 years ago

The graph shows the proportional relationship between the minutes Oliver

stepladder [879]

Step-by-step explanation:

Given

A proportional relation is given between minutes spend in reading and no of pages

Suppose we choose the point $(2,3)$ , It shows that 2 minutes is taken to read three pages.

Similarly, for point $(4,6)$ , It shows four minutes is taken to read 6 pages.

In this way, 6 minutes is taken for 12 pages.

8 0

3 years ago

For which equation would n = 0 not be a solution?

4vir4ik [10]

For the first equation n + 4 = 5, because 0 + 4 is not equal 5

5 0

3 years ago

A line crosses through the point (3,10) and another point can be found on the line by going right 2 and down 7. find slope and y

DerKrebs [107]

Answer:

y = $\frac{-7x}{2}+\frac{41}{2}$

Step-by-step explanation:

We are given the point (3, 10).

The second point is 2 on the x-axis and -7 on the y-axis. So our second point is: (3 + 2, 10 - 7) which is (5, 3).

Our formula for slope is m = $\frac{rise}{run}$ = $\frac{y2-y1}{x2-x1}$

So, our equation would be $\frac{3-10}{5-3}$ = $\frac{-7}{2}$

Using the standard formula of a line, y = mx + b, we can substitute for the slope, m.

y = $\frac{-7x}{2}$ + b

Now, we can substitute a point on the line to determine the y-intercept:

Using the point (3, 10),

10 = $\frac{-7(3)}{2}$ + b

b = 10 + $\frac{21}{2}$

b = $\frac{41}{2}$

So our full equation is: y = $\frac{-7x}{2}+\frac{41}{2}$

3 0

3 years ago

Ken worked 20 hours and earned nearly a) $200. b) $2,000. c) $20.

Vitek1552 [10]

Answer:

Multiply how much Ken gets paid by 20.

He gets paid $10per hour to make a

He gets paid $100per hour to make b

He gets paid $1per hour to make c

good luck, i hope this helps :)

3 0

3 years ago