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ruslelena [56]
4 years ago
15

10 POINTS PLZ HELPpppppp

Mathematics
1 answer:
andrezito [222]4 years ago
7 0

1. 2/5 x 3/4

1/5 x 3/2

3/10

2.-20x(-6)

multiplying two negatives equals a positive so

20x6=120

3.

A. -4

B.-20

C. Absolute value is always positive

4x2-3+15

8-3+15=20

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108 divided by 3 equals 36. I got this answer by multiplying 3 and 36, which equaled 108. Then I figured out that 108 divided by 3 equals 36!
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what's the volume of a rectangular prism if it has a length of 20 inches and a width of 12 inches and a height of 6 inches​
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Several customers order small fruit baskets filled with apples, bananas, and oranges. Let a represent the price per pound of app
skelet666 [1.2K]

The missing equations are;

a + 2b + 3c = 12

3a + 2b + 5c = 22

2a + 4b + 4c = 18

Answer:

a = 2

b = 0.5

c = 3

Step-by-step explanation:

We are told that;

a represent the price per pound of apples

b represent the price per pound of bananas

c represent the price per pound of oranges

The equations system is;

a + 2b + 3c = 12 - - - (eq 1)

3a + 2b + 5c = 22 - - - (eq 2)

2a + 4b + 4c = 18 - - - (eq 3)

Divide through equation 3 by 2 to get

a + 2b + 2c = 9 - - - (eq 4)

Subtract eq 4 from eq 1 to get;

3c - 2c = 12 - 9

c = 3

Put 3 for c in eq(2) and eq 4;

3a + 2b + 5c = 22

3a + 2b + 5(3) = 22

3a + 2b + 15 = 22

3a + 2b = 7 - - - (5)

a + 2b + 2(3) = 9

a + 2b + 6 = 9

a + 2b = 3 - - - (eq 6)

Subtract eq 6 from eq 5 to get;

2a = 7 - 3

2a = 4

a = 2

Put 2 for a in eq 6;

2 + 2b = 3

2b = 3 - 2

2b = 1

b = 1/2

b = 0.5

6 0
3 years ago
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