Please solve this problem... I will mark you brainliest

5x+8=9x+12 helpppppp

Marina CMI [18]

Hi there! :)

Answer:

$\boxed{X=-1}$

*THE ANSWER MUST HAVE A NEGATIVE SIGN!*

Step-by-step explanation:

First, you subtract by 8 from both sides of an equation.

5x+8-8=9x+12-8

Subtract.

12-8=4

5x=9x+4

Then, you subtract by 9x from both sides of an equation.

5x-9x=9x+4-9x

Simplify by equation.

-4x=-4

Divide by -4 from both sides of an equation.

-4x/-4=-4/-4

Divide by the numbers from left/right.

-4/-4=-1

$\boxed{X=-1}$ , is the FINAL/CORRECT ANSWER! :)

Have a nice day! :)

:D

-Charlie

Thank you!

4 0

3 years ago

devi bought 7 skirts at x$ each n skirts at 12$ each 2n +1 at 15 each a nd 4 skirts at $3x find the total

nikitadnepr [17]

Answer:

$(19x + 42n + 15)

Step-by-step explanation:

Devi bought 7 skirts at $x each, n skirts at $12 each, (2n + 1) skirts at $15 each and 4 skirts at $3x each. Find the total cost of the skirts she bought.

total cost of the skirt bought can be determined by adding the total costs of each shirt bought

7 skirts at $x each = $7x

n skirts at $12 each = $12n

(2n + 1) skirts at $15 = (2n + 1) x 15 = 30n + 15

4 skirts at $3x each = $12x

7x + 12n + 30n + 15 + 12x

combine like terms

19x + 42n + 15

7 0

3 years ago

Which mathematician is not known as a contributor to projective geometry?

gizmo_the_mogwai [7]

Desargues Pythagoras Pappus is the answer i think

7 0

3 years ago

A bus leaves a station traveling north at 70 kilometers per hour. Half an hour later a

Semenov [28]

Answer:

280 km

Step-by-step explanation:

Given that a bus, say $b_1$ , leaves a station traveling north at speed of 70km/hour.

Half an hour later the second bus, say $b_2$ , leaves a station traveling north at speed of 70km/hour.

As, distance = speed x time,

so, the distance traveled by bus $b_1$ in 0.5 hours = 70 x 0.5 = 35 km.

Note that, both the buses are traveling in the same direction and when the second bus leaves the station, the first bus already covered a distance of 35 km.

Let the second bus took $t$ hours to meet the first bus and both the buses meet at a distance of $d$ km from the station.