Answer:
You could say +3 and -2 or +4 and -1
Step-by-step explanation:For example if you draw a number line
count 1 hump between each line. it equals 5.
|_______|_______|_______|_______|_______|
-2 -1 0 1 2 3
To solve this problem, we can set two equations.
Let x be the cost of coffee and y be the cost of latte.
Two coffees and one latte: 2x + y = 10.50
y=10.50 - 2x ...(1)
Three coffees and two lattes: 3x + 2y = 17.00...(2)
Put (1) into (2), we have:
3x + 2(10.50-2x) = 17.00
3x + 2(10.50) - 2(2x) = 17.00
3x + 21 - 4x = 17
Put the unknown to one side:
3x -4x = 17 - 21
-x = -4
When there are negative numbers on both sides, we can take the negative signs away:
x= 4
Therefore, cost of one coffee is A. $4.00.
Hope ot helps!
Answer:
the width in the original rectangle is 24 meters.
Step-by-step explanation:
We know the perimeters of both rectangles therefore we can calculate the scale in this way:
120/30 = 4
Which means that there is a 4: 1 scale between the original and the reduced rectangle.
We know that the length in the reduced rectangle is 9, therefore in the original it would be:
9 * 4 = 36
Which means that 36 meters is the length of the original rectangle. We know that the perimeter is equal to:
p = 2 * l + 2 * w
replacing:
120 = 2 * 36 + 2 * w
2 * w = 120 - 72
w = 48/2
w = 24
Which means that the width in the original rectangle is 24 meters.
Answer:
d) sqrt a^6 × a
Step-by-step explanation:
sqrt a^6 × a
= a× a =a
6+ 1 = 7
= sqrt a^7