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3 years ago

The point P(5, −1) is rotated 90 degrees clockwise around the origin.

Mathematics

2 answers:

Katen [24]3 years ago

4 0

I’m pretty sure the answer is C

azamat3 years ago

3 0

Answer:

Step-by-step explanation:

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Katie works part-time at a Fallbrook riding stable she makes $5 an hour for exercising horses and $10 an hour for cleaning stall

Nookie1986 [14]

In order to at least earn $90, Katie can work exercising horses for 6 hours and cleaning stalls for 6 hours.

Step-by-step explanation:

Let hours of exercising horses be x --> $5 per hour = 5x

Let hours of cleaning stalls be y --> $10 per hour = 10y

Total earning = $\geq 90$

Total hours = 12

Equation 1:

5x + 10y = $\geq 90$

Equation 2:

x + y $\leq 12$

1. Multiply equation 2 by -5

x + y $\leq 12$ (*-5)

5x + 10y = $\geq 90$

-5x - 5y $\leq -60$

5x + 10y = $\geq 90$

2. Solve

-5x + 5x -5y + 10y = -60 + 90

5y = 30

y = 6

x + y = 12

x + 6 = 12

x = 6

Therefore, in order to at least earn $90, Katie can work exercising horses for 6 hours and cleaning stalls for 6 hours.

Keywords: Simultaneous, hours, equations

Learn more about at

#LearnwithBrainly

3 0

4 years ago

Heights taxi service charges $1.50 for the first mile and $.90 for each additional mile. How far could she go for $20 if she giv

joja [24]

$20 - $2 tip = $18

$18 ÷ $1.50 = 12 miles

3 0

4 years ago

3. Haley, Chuck, Dana, and Chris enter a contest to see who could bake the most chocolate chip cookies in an hour. Haley bakes 5

otez555 [7]

Chris baked 95 cookies.

Step-by-step explanation:

Given,

Cookies baked by Haley = 50

Cookies baked by Chuck = 65

Cookies baked by Dana = 90

Average of them = 75

Let,

Cookies baked by Chris = x

Average = $\frac{Sum\ of\ quantites}{No.\ of\ people}$

$75=\frac{50+65+90+x}{4}$

Multiplying both sides by 4

$4*75=\frac{50+65+90+x}{4}*4\\300=205+x\\300-205=x\\95=x\\x=95$

Chris baked 95 cookies.

Keywords: addition, average

Learn more about addition at:

#LearnwithBrainly

4 0

4 years ago

Lynn and Dawn tossed a coin 60 times and got heads 33 times. What is the experimental probability of tossing heads using Lynn an

My name is Ann [436]

$\dfrac{33}{60}=\dfrac{11}{20}$

7 0

3 years ago

Read 2 more answers

** WILL MAKE BRAINLIST **What is the quadratic regression equation for the data set? What is the quadratic regression equation f

katovenus [111]

Answer:

Now I am not completely sure but...maybe is it that:

A quadratic regression is the process of finding the equation of the parabola that best fits a set of data. As a result, we get an equation of the form:

y = a x 2 + b x + c where a ≠ 0 .

Cause I think it might be the best way to find this equation manually is by using the least squares method. That is, we need to find the values of a , b , and c such that the squared vertical distance between each point ( x i , y i ) and the quadratic curve y = a x 2 + b x + c is minimal.

The matrix equation for the quadratic curve is given by:

[ ∑ x i 4 ∑ x i 3 ∑ x i 2 ∑ x i 3 ∑ x i 2 ∑ x i ∑ x i 2 ∑ x i n ] [ a b c ] = [ ∑ x i 2 y i ∑ x i y i ∑ y i ]

7 0

3 years ago

Read 2 more answers