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Rzqust [24]
3 years ago
12

The equation P =4s represents the perimeter P of a square with the side length s. What is the perimeter of a square with side le

ngth 3ft
Mathematics
1 answer:
just olya [345]3 years ago
6 0
You plug in 3 as s. So ur formula is P=4(3)
P=12 ft
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What is the lest common Denominator for the fraction 1/7 and 2/3
djyliett [7]

Answer:

21

Step-by-step explanation:

7×3=21

You can also list out the multiples of 7 and 3, but its easier to just multiply

4 0
3 years ago
Can a triangle be made with sides of length 7, 10, and 20 units?
Anarel [89]
It can't, in triangle sum of 2 sides have to be more than 3rd side, and we know that 7+10 isn't more than 20 I also add picture to make it more clear, circles represents range of each side

8 0
4 years ago
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By what percent will the product of two numbers decrease if one of them is decreased by 25% and the other one is decreased by 50
olchik [2.2K]
Well, let's say the numbers are "a" and "b"

so a * b = ab

ok... now, if we reduce "a" by 25%, that means the new size is just 75% of the old one, how much is 75% of a? well, (75/100) * a, or 0.75a

now let's reduce "b" by 50%, that means the new size is 50% or half,  how much is 50% of b? well (50/100)*b, or 0.5b

\bf \begin{cases}
a\cdot b\implies  ab\\
0.75a\cdot 0.5b\\
\qquad 0.75\cdot 0.5ab\\
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now, the new size of "ab" is just 0.375ab... well, let's revert the decimal format by simply multiplying by 100

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the new size of "ab" is just 37.5% of the original "ab"

it decreased by 100 - 37.5 or 62.5%
5 0
4 years ago
Select all equations that have the solution x = 7.
shusha [124]

Answer:

1st,2nd, and 4th

Step-by-step explanation:

1)

2x + 14 = 28➡ x = 7

2)

60 = 4x + 32 ➡ x = 7

3)

2x - 6 -12 = -2x - 20 ➡ 4x = -2x = -1/2

4)

3x - 15 = 1 + 5x - 30 ➡14 = 2x ➡ x = 7

3 0
3 years ago
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Plz help all 3 i'll give brainiest if right.!!!
Zina [86]
A.) y=5/4x+16
B.) 1.25 hours less each day
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3 years ago
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