MATHEMATICS HIGH SCHOOL

What are the coordinates of the image (-3,-1) after a 90 counterclock wise e about the orgin and then translation 4 units up

Answers

Answer 1
Answer:

1. The counterclockwise rotation by 90° about the origin has rule:

(x,y)→(-y,x).

Then

(-3,-1)→(1,-3).

2. Translation 4 units up has rule:

(x,y)→(x,y+4).

Then

(1,-3)→(1,1).

Answer: after composition of transformations the image point has coordinates (1,1).

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If you're solving a quadratic equation by factoringwhat would the factorization of f(x)=2x^2+15x+7

Answers

Answer:

(2x+1)(x+7)

Step-by-step explanation:

A store buys an item for $50 and marks it up 100%. What is the price?

Answers

Answer

     = $100


Explanation

Profit =  selling price  -  buying price

percentage profit = profit/buying price × 100%

100% = profit /$50

Profit = 100% × $50

           = 100/100 × $50

             = 1 × $50

              = $50

Selling price = buying price + profit

                     = $50 + $50

                     = $100

$100 

100% would be doubling it.

I need help and I don't know what to do

Answers

i think combine like terms  
12x+10x+3x+2x      -y+y+5y
X=27                       Y=5y
any two opposite angles are equal so, 
12x - y = 10x +5y 
12x-10x = 5y+y 
2x = 6y 
so x=3y ----> eqn.1 

and, the sum of all angles are equal 360 degrees 
so 12x-y + 2x+4y + 10x+ 5 y + 3x + y = 360 then , 27x + 9y = 360  substitute by y= x/3 from eqn.1 the 27x +9(x/3) = 360 27x+3x=36030x=360x=12 substitute in eqn.1 y=x/3 y=12/3y=4 so  we get x = 12 & y = 4

What's the answer for the value of each 5 in 15,573? a) 500 b) 50 c) 5,000 d) 5

Answers

The value of each 5 in the number 15,573 is:

b) 50

If a line moves downward from left to right, it has a

Answers

Answer and Step-by-step explanation:

The answer is that the line has a negative slope.

In an equation, the the slope (m) would be a negative number, looking like this:

y = -mx + b

#teamtrees #PAW (Plant And Water)

Answer:

Negative slope

Step-by-step explanation:

The table to the right contains the lists of probabilities for the corresponding numbers of girls in three births. What is the random variable, what are its possible values, and are its values numerical? # of girls P(x). 00.125. 10.375. 20.375. 30.125.

Answers

So in the problem, it ask to what are the random variables, what are its possible values and what are its values numerical. So base on the table, for my understanding, the random variables is the number of girls, the possible value is the data in the number of girls which is 0,1,2,3, the numerical value is the P(x). I hope this would help 
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