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motikmotik
4 years ago
12

Two-thirds of a number added to itself is 20. What is the number?

Mathematics
1 answer:
vivado [14]4 years ago
8 0

Answer:

12

Step-by-step explanation:

2/3 x + x = 20

2/3 x + 3/3x = 20

5/3 x = 20   ... times 3/5 both sides

x = 12

check: 2/3 x 12 + 12 = 8 + 12 = 20

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3 0
3 years ago
If a width of a rectangle is 5 1/6 cm and its length is 2 2/7 cm what is its area?
azamat

Answer:

11.8095238095 or 11.81

Step-by-step explanation:

The way to figure out the area of a rectangle is by multiplying the width by the length. In your case, you would multiply 5 1/6 by 2 2/7 to get 11.8095238095 but we can always round it to 11.81. I hope this helps...

5 0
4 years ago
Read 2 more answers
Determine whether the sequence is arithmetic or geometric.
katen-ka-za [31]

Answer:

A. Sequence 2 is arithmetic and Sequence 1 is geometric

Step-by-step explanation:

Hello,

Answer A

-10,20,-40,80,.... is geometric= Sequence 1

15,-5,-25,-45.... is arithmetic= Sequence 2

5 0
3 years ago
Rewrite the expression with grouping symbols 5m+5n
Romashka-Z-Leto [24]
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3 0
3 years ago
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Put both 8 and n as a factor
Lostsunrise [7]
The answer is 8n I

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