Answer:
m = 2/1
Step-by-step explanation:
Slope is rise over run
Looking at the graph we know the slope is positive since it goes up from left to right
We have a point at (2,0)
We have another point at (3,2)
m = (y2-y1)/(x2-x1)
= (2-0)/(3-2)
= 2/1
Answer:
250 cards
Step-by-step explanation:
Let the number of baseball cards he originally had be x.
He sold 20% of the baseball cards after week one. This means that after week one the number of cards he had was:
x - (20/100 * x) = x - 0.2x = 0.8x
During week two he bought 20% more cards than he had after week one. This means that after week two, he had:
0.8x + (20/100 * 0.8x)
= 0.8x + (0.2 * 0.8x)
= 0.8x + 0.16x = 0.96x
He now has 10 fewer cards. This means that:
x - 10 = 0.96x
Collecting like terms:
x - 0.96x = 10
0.04x = 10
=> x = 10/0.04 = 250
He had 250 cards originally.
Answer:
answer c part
Step-by-step explanation:
please make me brainlist
Answer:
y = ±√(4 − x)
Step-by-step explanation:
To find the inverse of y = f(x), switch x and y and solve for y.
y = 4 − x²
x = 4 − y²
y² = 4 − x
y = ±√(4 − x)
She bought 2 books and 6 magazines.
Step-by-step explanation:
Given,
Price of a book = $ 5
Price of a magazine = $ 4.50
Total amount of book Luca bought = $ 37
Total number of books she bought = 8
To find the number of books and magazine she bought.
Let, she bought x number of books ans y number of magazines.
According to the problem,
x+y = 8 -----eq 1
5x+4.50y = 37 ------ eq 2
or, 10x+9y = 74 [ multyplying eq 2 by 2]
Putting x = 8-y from eq 1 into eq 2 we get,
10(8-y)+9y = 74
or, 80-10y+9y = 74
or, -y = 74-80
or, -y = -6
or, y = 6
From eq 1 we get,
x = 8-6 = 2
Hence,
She bought 2 books and 6 magazines.
