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3 years ago

If you had to pick one, algebra with finance or consumer math? I’m in high school.

Mathematics

1 answer:

kodGreya [7K]3 years ago

5 0

Answer:

Personally I'll pick algebra with finance, maybe you'll want to start a business in the future. Then this will surely come in handy.

Step-by-step explanation:

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Prove that lines 3x-4y=12 and 3y=12-4x are perpendicular.

Svetllana [295]

Answer:

see explanation

Step-by-step explanation:

If 2 lines are perpendicular then the product of their slopes equals - 1

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Consider the given equations

3x - 4y = 12 ( subtract 3x from both sides )

- 4y = - 3x + 12 ( divide terms by - 4 )

y = $\frac{3}{4}$ x - 3 ← in slope- intercept form

with slope m = $\frac{3}{4}$

3y = 12 - 4x = - 4x + 12 ( divide terms by 3 )

y = - $\frac{4}{3}$ x + 4 ← in slope- intercept form

with slope m = - $\frac{4}{3}$

Then

$\frac{3}{4}$ × - $\frac{4}{3}$ = - 1

Since the product of their slopes = - 1 then the lines are perpendicular

3 0

3 years ago

SOMEONE HELP ME FIND THE MISSING SIDE- (I think it’s 21)

Illusion [34]

Answer:

did u try looking it up lol?

Step-by-step explanation:

8 0

3 years ago

An insulator is installing fiberglass insulation in exterior walls that total up to 1,623 square feet after windows and doors a

ahrayia [7]

Answer:

143 because if you subtract 49 and 28 you get 21 the you divide 21 and 1623

6 0

2 years ago

Find the value of this expression if x = -4.<br> x2 – 7<br> x + 1

Eduardwww [97]

Answer:

First one equals -15

Second one equals -3

Step-by-step explanation:

(-4)*2 - 7

= (-8) - 7

= (-15)

(-4) + 1

= (-3)

Hopefully this helps.

3 0

3 years ago

Which point does the line with equation y+4=3(x-7) pass through?

gregori [183]

<span>y+4=3(x-7)
y + 4 = 3x - 21
y = 3x - 21 -4
y = 3x - 25

when x = 7
y = 3(7) - 25
y = -4
Therefore (7, -4) pass through this equation </span>

5 0

3 years ago