Parallel lines has equal slopes.
Equation of the line 2x + y + 1 = 0 in slope intercept form is y = -2x - 1 with slope of -2. Therefore, the slope is -2.

3 0

3 years ago

Read 2 more answers

Two truckers leave from the same point driving in opposite directions, the first trucker driving at 62 miles per hour and the s

Elodia [21]

Answer:

1 hour 42 minutes

Step-by-step explanation:

Given: Speed of 1st trucker= 62 mph

Speed of 2nd trucker= 66 mph

Total distance need to cover to be in contact is 270 miles

1st trucker start 1 hour ahead of 2nd trucker

Lets assume 2nd trucker take `x` hours to be in contact and 1st trucker take `(x+1)` hours.

We know, distance= $speed\times time$

1st trucker, distance $(d_1)= 62\times (x+1)$

∴ $d_1= 62x+62$

2nd trucker, distance $(d_2)= 66\times x$

∴ $d_2= 66x$

Now, putting the values in an equation.

$d_1+d_2= 270$

⇒ $(62x+62)+66x= 270$

Opening the parenthesis to solve and subtracting both side by 62

⇒ $122x= 208$

∴ x= $\frac{208}{122} = 1.70\ h$ = 1 hour 42 minutes

∴ It will take 1 hour 42 minutes to be able contact each other after first trucker leaves.

3 0

3 years ago

If f(x) = 2x-5, then f(4) is A 3 B 5 C 4 D 17

Ivahew [28]

Answer:

A. 3

Step-by-step explanation:

f(x) = 2x - 5

f(4) = 2(4) - 5

f(4) = 8 - 5

f(4) = 3

5 0

3 years ago

Read 2 more answers

What does the 3 represent in this scenario what does the 2 represent

Nadusha1986 [10]

Answer: IDK

Step-by-step explanation:

4 0

2 years ago