MATHEMATICS MIDDLE SCHOOL

PLEASE HELP ASAP!! 15 points!What is the equation of this line in slope-intercept form (-1,2) (1,-4)

I do not know how to post the picture but the answers are
A. Y= -1/3x - 1
B. Y=-3x -1
C. Y=3x + 1
D. Y=3x - 1

Answers

Answer 1
Answer:

slope = (y2-y1)/((x2-x1)

    = (-4-2)/(1-(-1))

    = (-6/2)

m = -3

point slope form

y-y1 = m(x-x1)

y-2 = -3(x-(-1))

y-2 =-3(x+1)

y-2 = -3x-3

y= -3x-3+2

y=-3x-1

Choice B

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A pigeon can fly 84 kilometers per hour. how long does the pigeon take to fly 7 kilometers?

Answers

84 kilometers ... 1 hour
7 kilometers ... x hours = ?

If you would like to know how long does the pigeon take to fly 7 kilometers, you can calculate this using the following steps:

84 * x = 1 * 7
84 * x = 7      /84
x = 7/84
x = 1/12 hour

Result: A pigeon can fly 7 kilometers in 1/12 hour.
Here is the work along with the answer:

Least to greatest 5/16,1/2,3/4,5/8,1/4

Answers

for this question you should know:
1/2 = 8/16 
3/4 = 12/16
5/8 = 10/16 
1/4 = 4/16 
so now you can say: 
4/16 < 5/16 < 8/16 < 10/16 < 12/16 
so this is as same as:
1/4 < 5/16 < 1/2 < 5/8 < 3/4 :)))
i hope this is helpful
have a nice day

You want to put $2,000 in a simple interest account. It has a 2.5% annual interest rate. How long will it take you to earn $500 in interest? A-1 B-6.25 C-10 D-25

Answers

I=Prt
Interest=principal×rate×time
500=2000×0.025×y (for years)
500=50y
10=y so
C) 10 years

The required it will take 10 years to earn $500 in interest. Option C is correct.

What is simple interest?

Simple interest is a quick and simple formula for figuring out how much interest will be charged on a loan.

SI= Principal×rate×time]

Here,
The formula for simple interest is:

I = Prt

We know that the principal (P) is $2,000, the interest rate (r) is 2.5% or 0.025 as a decimal, and we want to find the time (t) it takes to earn $500 in interest.

Substituting these values into the formula, we get:

$500 = 2,000 * 0.025 * t

$500 = 50t

t = 500 / 50 = 10 years

Therefore, it will take 10 years to earn $500 in interest.

Learn more about simple interests here:

brainly.com/question/26457073

#SPJ6

The original price of a watch was $550. During a mid-year sale, the selling price of the watch was $440. Find the percent discount

Answers

I think its 20 percent

Complete the following proof.Given: m ∠XOY = m ∠WOV
m YZ = m ZW
Prove: m XZ = m ZV

Answers

Answer:

Step-by-step explanation:

m ∠XOY = m ∠WOV

so, m XY = m WV --- (i)

     { If angle subtended by two arcs at the center are equal, then length of arc are equal}

m YZ = m ZW  ------- (ii)    {given}

Add (i) and (ii)

XY + YZ = WV + ZW

XZ = ZV    

Hence proved.

Answer:

Given that m ∠XOY = m ∠WOV then m XY = m WV, because central angles are equal to arcs.

Given: m YZ = m ZW

The addition of arcs XY and YZ make arc XZ, that is: m XY + m YZ = m XZ

The addition of arcs ZW and WV make arc XZ, that is: m WV + m ZW = m ZV

Then, m XZ = m ZV

Solve the system of equations.

x-4y=5
x=3y-2

(__,__)

Answers

sub 3y-2 for x
3y-2-4y=5
-2-y=5
-y=7
y=-7
x=3y-2
x=3(-7)-2
x=-21-2
x=-23

(-23,-7)
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