All categories

3 years ago

I need help with this question, I already know the answer but I need someone to explain step by step

Mathematics

1 answer:

svetoff [14.1K]3 years ago

7 0

Answer:

y=3x-5

Step-by-step explanation:

so step by step would go like this

1) add Y to the opposite side

3x=Y+5

2)Subtract 5 from the side with Y

y=3x-5

You might be interested in

An airplane makes a 400-mile trip against a head wind in 4 hours. The return trip takes 2.5 hours, the wind now being a tall win

tangare [24]

Answer:

$v_p=130\ miles/h$

$v_w=30\ miles/h$

Step-by-step explanation:

Lets call $v_p$ the the still-air speed of the plane and $v_w$ the speed of the wind. On the first part the speed of the plane relative to the ground will be $v_1=v_p-v_w$ , and on the second part it will be $v_2=v_p+v_w$ .

We know that the distance d=400 miles on the first and second parts are the same, so by the definition of velocity we will have:

$v_1=\frac{d}{t1}$

$v_2=\frac{d}{t2}$

Or:

$v_p-v_w=\frac{d}{t1}$

$v_p+v_w=\frac{d}{t2}$

Adding both equations:

$(v_p-v_w)+(v_p+v_w)=2v_p=\frac{d}{t1}+\frac{d}{t2}$

$v_p=\frac{1}{2}(\frac{d}{t1}+\frac{d}{t2})$

Which for our values is:

$v_p=\frac{1}{2}(\frac{400\ miles}{4h}+\frac{400\ miles}{2.5h})=130\ miles/h$

If instead of adding, we substact, we would have:

$(v_p+v_w)-(v_p-v_w)=2v_w=\frac{d}{t2}-\frac{d}{t1}$

$v_w=\frac{1}{2}(\frac{d}{t2}-\frac{d}{t1})$

Which for our values is:

$v_w=\frac{1}{2}(\frac{400\ miles}{2.5h}-\frac{400\ miles}{4h})=30\ miles/h$

6 0

4 years ago

What is the answer to these..?

erastova [34]

2. $9.20 cause you multiply the price by the number of the sweets

8 0

3 years ago

Read 2 more answers

Camille is at the candy store with Grandma Mary, who offers to buy her $6 worth of candy. If lollipops are $1 each and candy bar

Dominik [7]

Simple she gets either 2 lollipops and 2 candy bars or get 4 lollipops and 1 candy bar.

8 0

3 years ago

Find the area of

Vladimir79 [104]

Answer:

18X+6

Step-by-step explanation:

Area of a triangle is half into base into height... forget about other things

5 0

3 years ago

Read 2 more answers

50 POINTS AND BRAINLIEST!!!!!!

harkovskaia [24]

Answer:

14 12 10 8 6 4 2

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers