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julsineya [31]
3 years ago
10

7 times a number is equal to 12 more than three times the number. Find the number.

Mathematics
1 answer:
Sonja [21]3 years ago
6 0
7x=3x+12 
-3x  -3x
4x=12
x=3
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In how many ways can 4 boys and 4 girls be arranged in a row such that no two boys and no two girls are next to each other?(A) 1
nirvana33 [79]

Answer:

1152

Step-by-step explanation:

4 boys and 4 girls be arranged in a row such that no two boys and no two girls are next to each other.

Two boys and two girls are not next to each other. so one boy and one girl are next to each other in two ways.

BGBGBGBG, GBGBGBGB

4 boys are arranged in 4! ways and 4 girls are arranged in 4! ways

So number of ways = 2 \cdot 4! \cdot 4!=2 \cdot 24 \cdot 24=1152

4 0
3 years ago
The length of a new rectangular playing field is 4 yards longer than triple the width. if the perimeter of the rectangular playi
jasenka [17]
The length is 4 yards longer than 3width so L = 3W+4
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408 = 6W +8 +2W
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W = 50

L = 3*50 +4 = 154

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hope that this is easy understandably 
8 0
3 years ago
Find the complete factorization of
notsponge [240]
<h3>Option C is correct</h3>

<h3>Let us see the verification;</h3>

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<h2>Hence, Proved ✔︎</h2>

5 0
3 years ago
How much larger is the area of the rectangle than the
lana [24]

Answer:

The area of the rectangle is 8 cm 2. 1. Find the area and perimeter of a rectangle with a length of 6 cm and a breadth of 4 cm. 2. A square table cloth has a side of 5 m.

Step-by-step explanation:

5 0
3 years ago
Someone help me its timed!!!
Lelechka [254]

Answer:

C!

Step-by-step explanation:

7 0
3 years ago
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