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3 years ago

Give an example of parallel lines in the real world. Then describe how you could prove that the lines are parallel.

1 answer:

4 0

The sides of a TV.

since left and right (sides) goes up and down

---------------
| T.V | <-- SIDES R THE SAME VERTICAL
| °°° | LINE <UP AND DOWN>
---------------

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1/5 of 400 showing work

pychu [463]

1/5 of 400 = 80
400 x 1/5 = 400/5
400/5 = 80

6 0

3 years ago

Mike and Mary were expecting 85 people at their wedding. The weather was very bad on the day of the wedding and 10 people were n

Vera_Pavlovna [14]

Answer:

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

A dealer sold 500 tennis racquets some were sold at $20 each and the rest were sold at $45 each. The total receipts from these s

arlik [135]

Answer:

He sold 100 rackets for $ 20

Step-by-step explanation:

To start, we have to make 2 equations, one that represents the number of rackets and the other the money

x + y = 500

x * 20 + y * 45 = 20000

we clear x in the first equation

x + y = 500

x = 500 - y

we replace x in the second equation with (500 - y)

x * 20 + y * 45 = 20000

(500 - y) * 20 + y * 45 = 20000

10000 - 20y + 45y = 20000

-20y + 45y = 20000 - 10000

25y = 10000

y = 10000/25

y = 400

we replace x in the first equation with the value obtained

x = 500 - y

x = 500 - 400

x = 100

He sold 100 rackets for $ 20

8 0

4 years ago

Read 2 more answers

Solve using Distributive property -3(-4v^3-2+2y^2)

zlopas [31]

Answer:

192- -6 + -12y

Step-by-step explanation:

3 0

3 years ago

A rock falls off a balcony. It’s height(in feet)is given by the formula f(x)= -16t^2+12.5t+150, where t is measured in seconds.

ELEN [110]

Answer: $3.47\ seconds$

Step-by-step explanation:

Given the following function:

$f(x)= -16t^2+12.5t+150$

You need to follow these steps in order to solve the exercise:

1. Substitute $f(x)=0$ :

$0= -16t^2+12.5t+150$

2. Now you need to apply the Quadratic formula. This is:

$x=t=\frac{-b\±\sqrt{b^2-4ac} }{2a}$

In this case, you can identify that:

$a=-16\\b=12.5\\c=150$

Then, you can substitute these values into the formula:

$t=\frac{-12.5\±\sqrt{(12.5)^2-4(-16)(150)}}{2(-16)}$

3. Evaluating, you get:

$t_1=3.47\\\\t_2=-2.69$

4. You must choose the positive value. Then:

$t=3.47\ seconds$

7 0

4 years ago