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3 years ago

Y=37x+11y=37x+11

Mathematics

2 answers:

Nataly [62]3 years ago

8 0

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Ivenika [448]3 years ago

4 0

y= 3/7 x+11

-3x + 7y = 13

Part A: Convert the second equation to slope-intercept form. Show your work!

-3x + 7y = 13

Add 3x to both sides

7y = 3x + 13

Divide both sides by 7

y = 3/7 x + 13/7

Answer: Slope intercept form: y = 3/7 x + 13/7

Part B: Determine whether or not the graphs of the lines are parallel. Explain how you know.

First equation: y= 3/7 x+11 , this equation has slope equal 3/7

Second equation: y = 3/7 x + 13/7, this equation also has slope equal 3/7

Slopes are the same so both graphs of the lines are parallel.

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Heather left the hospital and drove toward the desert at an average speed of 35 km/h. Danielle left sometime later driving in th

elena55 [62]

Answer:

Danielle drove 3 hours

Step-by-step explanation:

Suppose Heather moved in the x direction.

Then Danielle moved in the opposite direction, that is, she moved in the -x direction.

Let's call $V_1$ , $x_1$ , $t_1$ at the speed, distance and time that I code Heather

Let's call $V_2$ , $x_2$ , $t_2$ at the speed, distance and time Danielle codes.

Observe the following diagram:

(x) Heather <------ $x_1$ --------- hospital ---------- $x_2$ -----------> Danielle (-x)

So:

$V_1 = 35\ km/h$

$t_1 = 4\ h$

$V_2 = 50\ km/h$

We know that after 4 hours the distance between Heather and Danielle was 290 km.

That is to say:

$x_2 + x_1 = 290\ km/h$

We know that $x_1= v_1t_1$

$x_1 = 35(4)$

$x_1 = 140\ km$

We already know $x_1$ , the distance from the hospital to Heather, so we can find $x_2$ and thus know $t_2$

So:

$x_2 = 290 - 140\\\\x_2 = 150\ km$

Then:

$t_2 = \frac{x_2}{v_2}\\\\t_2 = \frac{150}{50}\\\\t_2 = 3\ h$

7 0

3 years ago

One solution to 3x+9+4x+x

Katyanochek1 [597]

Answer:

8x+9

Step-by-step explanation:

Add the like terms together.

3x+9+4x+x = 8x+9

5 0

3 years ago

Read 2 more answers

The cost of a repair, which depends on the hours of labor it takes to make the

klio [65]

Answer:

I think it's B. Hours(cost) = $200 but I could be wrong

7 0

3 years ago

200x - 100x + 57,600 = 60,000 - 200x

Katarina [22]

Answer:

x = 8

Step-by-step explanation:

200x - 100x + 57,600 = 60,000 - 200x

100x + 57,600 = 60,000 - 200x

300x = 2,400

x = 8

8 0

3 years ago

Andre currently runs a total of 12 Miles each week. he plans to increase the number of miles he runs each week by a 1.5 miles un

krek1111 [17]

Answer:

1.5x+12=26

Step-by-step explanation:

Andy currently runs a total of 12 miles per week. He plans to increase that number by 1.5 miles, so number of miles increased in x weeks will be 1.5x and total number of miles ran in x weeks will be 1.5x+12.

Since Andy wants to reach a total of 26 miles per week, so we will equate the total number of miles ran in x weeks with 26.

4 0

3 years ago