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3 years ago

HELP URGENT!!!!

Mathematics

1 answer:

Vikki [24]3 years ago

7 0

The equation should be y= -2x+5.

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Find elapsed time 7:30am to 3:00 pm

Vikki [24]

Answer:

7 hours 30 minutes and 0 Seconds

Step-by-step explanation:

60 minutes in 1 hour
7:30 - 3:00
60 * 10 = 600 Seconds
Plus the 30 minutes which converts to 20 seconds
Change that into hours and minutes

7 0

1 year ago

Give the following equations determine if the lines are parallel perpendicular or neither

GaryK [48]

In order to determine whether the equations are parallel, perpendicular, or neither, let's simply each equation into a slope-intercept form or basically, solve for y.

Let's start with the first equation.

$\frac{6x-5y}{2}=x+1$

Cross multiply both sides of the equation.

$6x-5y=2(x+1)$ $6x-5y=2x+2$

Subtract 6x on both sides of the equation.

$6x-5y-6x=2x+2-6x$ $-5y=-4x+2$

Divide both sides of the equation by -5.

$-\frac{5y}{-5}=\frac{-4x}{-5}+\frac{2}{-5}$ $y=\frac{4}{5}x-\frac{2}{5}$

Therefore, the slope of the first equation is 4/5.

Let's now simplify the second equation.

$-4y-x=4x+5$

Add x on both sides of the equation.

$-4y-x+x=4x+5+x$ $-4y=5x+5$

Divide both sides of the equation by -4.

$\frac{-4y}{-4}=\frac{5x}{-4}+\frac{5}{-4}$ $y=-\frac{5}{4}x-\frac{5}{4}$

Therefore, the slope of the second equation is -5/4.

Since the slope of each equation is the negative reciprocal of each other, then the graph of the two equations is perpendicular to each other.

5 0

1 year ago

I need the 68th term help plz

Svet_ta [14]

Answer:

Since -14 is added in each term

Therefore,in 68 th term will be 68×-14 +(-19)

As the 1 st term is -19

68 th term= -952+(-19)

68 th term= -971

8 0

2 years ago

A racing car used 255 litres of fuel to complete a 340km race.on average,how many litres of fuel did the car use every 100km?

KIM [24]

X=(255÷340)×100
x=0.75×100
x=75

5 0

2 years ago

Evaluate the expression. 6 to the third power + 5( 8 + 15)

olya-2409 [2.1K]

Answer:

5083

Step-by-step explanation:

6^3 + 5(8 + 15)

Simplify the bracket first

6 x 6 x 6 + 5 (23)

216 + 5 (23)

221 (23)

221 x 23 = 5083

6 0

2 years ago