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Kazeer [188]
3 years ago
6

If someone could answer these two questions, that would be wonderful:

Mathematics
1 answer:
olganol [36]3 years ago
7 0
1. An ordered pair is a pair of numbers in parentheses, separated by a comma, which indicates the distance of a point from the origin. The first number represents the x-coordinate (where it is from side-to-side), and the second number represents the y-coordinate (where it is from up and down).

2. The four quadrants of the basic plane are listed in this order:

  II    |     I
        |   
=========
        |
 III    |    IV

A point in the first quadrant (I) <span>could be (5, 10), since that means that you would be moving right 5 and up 10.</span>

A point in the second quadrant (II) could be (-3, 6), since that means that you would be moving left 3 and up 6.

A point in the third quadrant (III) could be (-7, -1) since that means that you would be moving left 7 and down 1.

A point in the fourth quadrant (IV) could be (2, -6) since that means that you would be moving right 2 and down 6.

A point on the x-axis could be (9, 0) since that means that we are moving right 9 and making no vertical movement.

A point on the y-axis could be (0, 4), since that means that we are going up 4 and making no horizontal movement.

Hope that helped! =)
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A rock drops from a height of 60m. how long does it take for it to hit the ground?
laila [671]

To solve for the time an object takes to hit the ground, the equation

<em>y</em> <em>= y₀ + v₀t + ½gt²</em>, or just <em>0 = y₀ +½gt²</em> since there is no initial velocity and the final y position is 0 (since it is on the ground). Therefore, <em>t = (−2y₀/g)^½.</em>

(-2*60/-9.8)^½ = 3.50 seconds.

<em />

8 0
3 years ago
Write an inequality that represents the real-world problem. then select all that apply
Alekssandra [29.7K]

Answer:

where is the problem

Step-by-step explanation:

6 0
2 years ago
A researcher plans to conduct a significance test at the 0.01 significance level. She designs her study to have a power of 0.90
Rasek [7]

Answer: 0.10

Step-by-step explanation: The type 2 error is committed when the alternative hypothesis is rejected when it should have been accepted causing the researcher to accept the null hypothesis which is false.

Power is the probability of avoiding a type 2 error. That is ;

Power = 1 - P(type 2 error)

Given that power = 0.90 ; P(type 2 error) = probability of committing a type 2 error.

P(type 2 error)' = 1 - P(type 2 error) = Probability of not committing or avoiding a type 2 error

0.90 = 1 - P(type 2 error)

P(type 2 error) = 1 - 0.90

P(type 2 error) = 0.10

6 0
3 years ago
the bus to Leeds departs every 36 mins and the bus to Manchester leaves every 45 mins they leave the station at 10am one morning
Oliga [24]

Answer:

1 pm

Step-by-step explanation:

We have to find their LCM, or least common multiple

Multiples of 36: 36, 72, 108, 144, 180, 216, ......

Multiples of 45: 45, 90, 135, 180, ....

180 mins is their LCM.

180 mins = 3 hours

10am + 3hours = 1 pm

-Chetan K

6 0
2 years ago
I etavidewifdwcvefoewf
azamat

I’m not sure what that meant.

6 0
3 years ago
Read 2 more answers
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