PLEASE HELP I DON'T UNDERSTAND

Answers

Answer 1

Answer: Do you remember how to find the equation of a line when you know two points on the line ? Well, that little table gives you FIVE points on the line, and in case some students didn't notice that, the table even labels the columns 'x' and 'y' as a hint. With 5 points given, there are 20 different ways to find the equation of the line. Get to work.

Answer 2

Answer: Okay first we need to find the line of best fit. We would need the slope and the y-intercept. First let's solve for slope.

$Slope = (y_2 - y_1)/(x_2 - x_1)$

We would need two coordinates from the table to fill in the data. Let's use (0, 23) and (1, 20).

$(x_1, y_1) = (0, 23); (x_2, y_2) = (1, 20)$

Then we can solve for the y-intercept using the slope-intercept form: y = mx + b.

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Three copies of a book cost $20. Use equivalent ratios to find the cost of nine copies of the book.

Answers

i would say that it should cost 60 dollars

The answer is $60 beacause 3x20=60

If a spacecraft was parked on Venus and needed to make a flight to Jupiter, how far would it need to travel? (Assume both planets are aligned with the sun and are on the same side of the sun.) in scientific notation.

Answers

Answer:

1.08⋅10^8 km

Step-by-step explanation:

At the zoo, the Spencer family bought 3 adult tickets and 2 children's tickets for $23.50. The Yang family bought 2 adult tickets and 4 children's tickets for $25. How much would the Diaz family spend if they bought 3 adults tickets and 1 children's ticket?

Answers

Diaz family spend $ 20 if they bought 3 adults tickets and 1 children's ticket

Solution:

Let "a" be the cost of each adult ticket

Let "c" be the cost of each student ticket

The Spencer family bought 3 adult tickets and 2 children's tickets for $23.50

Therefore, we frame a equation as:

$3 * a + 2 * c = 23.50$

3a + 2c = 23.50 --------- eqn 1

The Yang family bought 2 adult tickets and 4 children's tickets for $25

Therefore, we frame a equation as:

$2 * a + 4 * c = 25$

2a + 4c = 25 ----------- eqn 2

Let us solve eqn 1 and eqn 2

Multiply eqn 1 by 2

6a + 4c = 47 ---------- eqn 3

Subtract eqn 2 from eqn 3

6a + 4c = 47

2a + 4c = 25

( - ) --------------

4a = 47 - 25

4a = 22

Divide both sides of equation by 4

a = 5.5

Substitute a = 5.5 in eqn 1

3(5.5) + 2c = 23.50

16.5 + 2c = 23.50

2c = 23.50 - 16.5

2c = 7

Divide both sides of equation by 2

c = 3.5

Thus, cost of each adult ticket = $ 5.5

Cost of each student ticket = $ 3.5

How much would the Diaz family spend if they bought 3 adults tickets and 1 children's ticket?

Total cost = 3a + 1c

Total cost = 3(5.5) + 1(3.5) = 16.5 + 3.5

Total cost = 20

Thus Diaz family spend $ 20

What is 0.08 as a fraction

Answers

Answer is provided in the image attached.

It is 8/100 because there is two numbers and when you have two numbers right of the decimal it will be that number over 100

A helicopter rose vertically 300m and then flew west 400m. how far was the helicopter from it starting point?

Answers

$a^(2) + b^(2) = c^(2) 300 ^(2) + 400 ^(2) = c^(2) c^(2) =250,000 √(250,000)=500m$

The helicopter rose vertically, and then flew horizontally, so it's final displacement (distance from where it is now to where it started) is in the shape of a triangle.

The displacement is the hypotenuse of this triangle, with sides 300m and 400m.

We can work out this distance using Pythagorus' theorem, because we know that;

$a^(2) = b^(2) + c^(2)$

Where $a$ is the hypotenuse, and $b$ and $c$ are the two other sides. So;

$a^(2) = b^(2) + c^(2) \n \n a^(2) = 300^(2) + 400^(2) \n \n a^(2) = 90000 + 160000 \n \n a = √(250000) \n \n a = \boxed{500m}$

1/10 ÷ 6/19 =? in simplest form

Answers

the answer would be 19/60 or 0.3166666

$(1)/(10) : (6)/(19)= (1)/(10) * (19)/(6)= (19)/(60)$

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