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IrinaK [193]
2 years ago
14

Someone please help and choose correct answer

Mathematics
1 answer:
tresset_1 [31]2 years ago
7 0

Answer:

The equation of line that passes through point (2,-1) and has a slope of -3 is \mathbf{y=-3x+5}

Option A is correct.

Step-by-step explanation:

We need to write equation of line that passes through point (2,-1) and has a slope of -3

The equation is written in slope-intercept form: y=mx+b where m is slope and b is y-intercept.

We are given slope: m = -3

We need to find y-intercept (b)

Using the point (2,-1) and slope m=-3, we can find y-intercept

y=mx+b\\-1=-3(2)+b\\-1=-6+b\\b=-1+6\\b=5

So, we get y-intercept b = 5

Now, the required equation having slope m =-3 and y-intercept b = 5 will be:

y=mx+b\\y=-3x+5

So, the equation of line that passes through point (2,-1) and has a slope of -3 is \mathbf{y=-3x+5}

Option A is correct.

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I'm confused. Hopefully, you can help me.
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3 years ago
Read 2 more answers
A rectangular dartboard has an area of 648 square centimeters. The triangular part of the dartboard has an area of 162 square ce
never [62]

Answer:

The probability that the dart lands inside the triangle is 0.25

Step-by-step explanation:

* Lets explain how to find the probability of an event

- The probability of an Event = Number of favorable outcomes ÷ Total

  number of possible outcomes

- P(A) = n(E) ÷ n(S) , where

# P(A) means finding the probability of an event A

# n(E) means the number of favorable outcomes of an event

# n(S) means set of all possible outcomes of an event

- P(A) < 1

* Lets solve the problem

- A rectangular dartboard has an area of 648 cm²

- The triangular part of the dartboard has an area of 162 cm²

- A dart is randomly thrown at the dartboard

- The dart lands in the rectangle

∴ The area of the rectangle is the set of all possible outcomes n(S)

- The probability P(A) that the dart lands inside the triangle

∴ The area of the triangle is set of favorable outcomes of an

   event n(E)

∵ P(A) = n(E) ÷ n(S)

∴ P(T) = area of the triangle ÷ area of the rectangle

∵ Area of the rectangle is 648 cm²

∴ n(S) = 648

∵ The area of the triangle is 162 cm²

∴ n(E) = 162

∴ P(T) = 162 ÷ 648 = 1/4 = 0.25

* The probability that the dart lands inside the triangle is 0.25

5 0
2 years ago
Does the point (-1,-4) lie on the line y = 5 - X?
Arisa [49]
No

X+y=5
It wouldn’t work
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A certificate of deposit earns 1% interest every three months. The interest is compounded.
dsp73
A certificate of deposit earns 1% interest every three months. The interest is compounded.


What is the value of a $35,000 investment after 6 years?


$37,153.21

$39,438.88

$44,440.71

$56,295.30

A. 37,153.21
5 0
3 years ago
Read 2 more answers
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