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vredina [299]
3 years ago
6

if i have 5 apples and i ate them in 3 days,but if i buy 8 apples how many days will it take to eat the 7 apples?

Mathematics
2 answers:
Soloha48 [4]3 years ago
4 0
The answer is 4.2. He ate 7 Apple in 4.2 days
ra1l [238]3 years ago
4 0
1 day eat 2. 2day eat 1. 3 day eat1.4 day eat1.5 day eat 1.6 day eat 1.7 day eat 1.
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HELP
Nikitich [7]

Equations

Let the number of liters of 80% acid = x

Let the number of liters of 40% acid = y

x + y = 2

80%x + 40%y = 65% * 2

Step One

multiply the 2nd given by 100

(80/100)x + (40/100)y = (65/100)*2

80x + 40y = 2*65 = 130                 (3)

Step Two

Multiply the first given equation by 80

80x + 80y = 160                             (4)

Step Three

Subtract (4) - (3)

80x + 80y = 160

<u>80x + 40y = 130</u>

40y = 30               Divide by 40

y = 30/40

y = 3/4 = 0.75

What you have found is that out of 2 liters, 0.75 L must be the 40% acid.

Step Four

Find the 80% volume

x + y = 2

y = 0.75 L

x + 0.75 = 2

x = 2 - 0.75

x = 1.25 L

Answers

80% Volume = 1.25 L

40% Volume = 0.75 L



4 0
3 years ago
I am beggging you..I don't understand how to do this so can someone please write the equations for the problems. You don't have
Natasha_Volkova [10]
12) The answer is 2 months

4 0
3 years ago
Liz is putting wallpaper on a 9-foot by 12foot wall. The roll of wallpaper is 30 inches wide. What is the area
ddd [48]
The wall is 9 ft by 12 ft.
9 × 12 = 108

The area of the wall is 108 ft².

Not sure what the width of the wallpaper is for <:(
6 0
3 years ago
Expand the brackets 2x(3x+5).
Harrizon [31]

Answer:

6x²+10x

Step-by-step explanation:

2x(3x+5)

Distribute 2x to the terms in the bracket.

2x(3x) + 2x(5)

2x × 3x + 2x × 5

Multiply the terms.

6x²+10x

The answer is 6x²+10x.

5 0
3 years ago
Can someone help me with this problem [-64x(-5)-2x(3)]
galina1969 [7]
The answer is 314
(^o^)
5 0
3 years ago
Read 2 more answers
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