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dezoksy [38]
3 years ago
10

WILL MARK YOU BRAINLIEST

Mathematics
2 answers:
Reptile [31]3 years ago
4 0

Answer:

(-1,-3)

Step-by-step explanation:

90 degree rotation = (x,y) —> (-y,x)

Nikolay [14]3 years ago
3 0

Answer:

i believ its b

Step-by-step explanation:

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the price of grapes at the grocery store is 1.44 per pound. There are approximately 0.45 kilograms in a pound. To the nearest pe
4vir4ik [10]
1 kg = 1pound/0.45=2.2222(2) pounds
1.44*2.222(2)=3.11 dollars per kilogram
Price of grapes is 3.11 dollars per kilogram
6 0
3 years ago
Which of the following equations has infinitely many solutions?
lions [1.4K]

Answer:

A

Step-by-step explanation:

3x+4(3x+6)= 15x+24

distribute 4(3x+6)

which equals 12x+24

3x+12x+24= 15x+24

Now combine like terms

15x+24= 15x+24

its equal so BOOM .  

7 0
2 years ago
Isabel purchased a prepaid phone card for $20. Long-distance calls cost 18 cents a minute using this card. Isabel used her card
Mandarinka [93]

Answer:

20 - .07c = 17.13

20 - 17.13 = 2.87

2.87/7 = 41

Her call took 41 minutes

Step-by-step explanation:

7 0
3 years ago
What is the average rate of change of the function f(x)=480(0.3)x from x = 1 to x = 5?
m_a_m_a [10]

aerage rate of change is just the slope from the endpoints of teh interval


ie averagerateofchange=slope=\frac{f(5)-f(1)}{5-1}

assuming you mean f(x)=480(0.3)^x

evalaute f(5) and f(1)

f(5)=480(0.3)^5=1.1664

f(1)=480(0.3)^1=144


average rate of change=(1.1664-144)/(5-1)=-35.7084


the average rate of change of the function on the interval x=1 to x=5 is -35.7084

8 0
3 years ago
F x = 3, then what is the value of y?<br> A) 0 <br> B) 3 <br> C) 4 <br> D) 9
lana66690 [7]
The answer is:  [B]:  " 3 " .
__________________________________________
  If   f(x) = 3 ;  then  "y = 3" . 
__________________________________________
 (assuming this is the only information we are given).
__________________________________________
7 0
3 years ago
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