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2 years ago

1. Are these two lines parallel, perpendicular or neither?

Mathematics

1 answer:

kolezko [41]2 years ago

8 0

Answer:

parallel

Step-by-step explanation:

they have the same slope, but different y intercepts

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If B is the midpoint of AC, AB = 8x + 5, and BC = 5x2 - 16, then find x and AC

Murljashka [212]

Answer:

Step-by-step explanation:

AB = 8x + 5

BC = 5x² - 16

5x² - 16 = 8x + 5

5x² - 8x - 21 = 0

Quadratic formula

x = [8 ± √(8² – 4·5(-21))] / [2·5]

= [8 ± √484] / 10

= [8 ± 22] /10

= -1.4, 3

-1.4 is an extraneous solution.

x = 3

AB = 8x+5 = 29

AC = 58

5 0

3 years ago

In the following exercises, multiply the binomials. Use any method. 266. (3rs − 7)(3rs − 4)

Novay_Z [31]

Answer:

Hence the expression $(3rs-7)(3rs-4)=9r^2s^2-33rs+28$

Step-by-step explanation:

Explanation

The given expression is (3rs-7)(3rs-4).
We have to multiply the given expression.
Multiply the (3rs-7) by -4, multiply the (3rs-7) by 3rs then add like terms.

$\begin{matrix}{} & {} & {} & {} & 3rs & - & 7 \\ \times & {} & {} & {} & 3rs & - & 4 \\ \end{matrix}$

_________________

$\begin{matrix}{} & {} & {} & - & 12rs & + & 28 \\ {} & {} & 9{{r}^2}{{s}^2} & - & 21rs & {} & {} \\ \end{matrix}$

________________

$\begin{matrix}{} & {} & 9{{r}^2}{{s}^2} & - & 33rs & + & 28 \\ \end{matrix}$

3 0

2 years ago

Evaluate 2/3x -16 when x= 18 A.-6 B.-4 C.2 D.4

const2013 [10]

2/3 of 18 is 12
then 12- 16 is -4
SO B

8 0

3 years ago

Find the function value, f(4) if f(x) = 12x - 1

Scrat [10]

Answer:

f(4) = 47

Step-by-step explanation:

f(x) = 12x - 1

Let x = 4

f(4) = 12(4) -1

= 48 -1

= 47

4 0

4 years ago

Read 2 more answers

Which car’s price is less than 2 times the price of Car 1?

Advocard [28]

Answer:

car 2

Step-by-step explanation:

2×car1 = $30,000

car2 costs less than $30,000

5 0

3 years ago