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skelet666 [1.2K]
2 years ago
10

Alex has a small notebook that is shaped like a rectangle . She knows one side is 6 cm and another side is 4 cm .Explain how to

find the distance around the notebook without using a ruler .
need help for 2nd grade

Mathematics
1 answer:
gayaneshka [121]2 years ago
5 0

Answer:

20 cm

Step-by-step explanation:

Since it is a rectangle, we know that there are two pairs of sides the same length. All we have to do is add each number by itself, and add those numbers together, or you can envision it like this graph I made.

4+4=8

6+6=12

8+12=20

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Plz help and give explaination of how to do it
professor190 [17]

Answer:

25% decreased by 60% is 10

Step-by-step explanation:

New value =

25 - Percentage decrease =

25 - (60% × 25) =

25 - 60% × 25 =

(1 - 60%) × 25 =

(100% - 60%) × 25 =

40% × 25 =

40 ÷ 100 × 25 =

40 × 25 ÷ 100 =

1,000 ÷ 100 = 10

hope this helps :)

7 0
2 years ago
X + 20 is greater than 4x -1
Paul [167]

Answer:

False; they are equal.

Step-by-step explanation:

The equation is x + 20 > 4x - 1.

First, do the opposite of -1 and add one to the other side while -1+1 cancels out. Now it's x+21 > 4x. Now subtract x from both sides. Positive x minus negative x cancels out and 4x minus x or 1x is 3x. Now you're left with 21> 3x. Now do the inverse operation of multiplication and divide both sides by 3. Now the 3x over 3 cancels out and 21 divided by 3 is 7. So x is 7. If you substitute it in. It will be 7+20 which is 27 which is great than 4(7)-1 which is 28-1. 28-1 is 27. So, the equation is false. They are equal.

7 0
3 years ago
This rectangle shows 1/3 shaded,Which rectangle shows more than 1/3 shaded? A rectangle divided into six equal parts. One of the
castortr0y [4]

Answer:

The rectangle divided in 2 equal parts

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
the annual interest on an 18,000 investment exceeds the interest earned on a 9000 investment by 648. the 18,000 is invested at a
Natalka [10]
Let x=annual interest rate of 18000 investment.
Then
18000*x - 9000(x-0.006)=648
Solve for x
18000x-9000x+9000*0.006=648
9000x=648-54=594
x=594/9000=0.066
Answer:
the annual interest rate of the 18000 investment is 6.6%
the annual interest rate of the   9000 investment is 6.0%

7 0
3 years ago
The length of a rectangular backyard is represented by 4x + 10, and the width is represented by 2x + 5.
kotegsom [21]

Answer:

(2) 6x^2+40x +50

Step-by-step explanation:

(4x+10)*(2x+5) = 8x^2 +40+50

minus 2x^2

=6x^2 +40 +50

4 0
2 years ago
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