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postnew [5]
3 years ago
6

Find the length of the side of the square if the number of square meters in its area is 1.5 times the number of meters in its pe

rimeter
Mathematics
1 answer:
Alinara [238K]3 years ago
8 0

a - a length of side of square

The area: A = a²

The perimeter: P = 4a

The equation:

a^2=1.5\cdot4a\\\\a^2=6a\ \ \ \ |-6a\\\\a^2-6a=0\\\\a(a-6)=0\iff a=0\ \vee\ a-6=0\\\\\boxed{a=6}

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What is the absolute value of 2.3
Hoochie [10]
<h3>Answer:  2.3</h3>

The absolute value of any positive number is that number itself.

If you take the absolute value of a negative number, then just erase the negative sign and you have your answer.

The absolute value is never negative. It represents distance from that value to 0 on the number line.

So saying |2.3| = 2.3 means the number 2.3 is exactly 2.3 units away from 0 on the number line.

Another example would be |-7| = 7 showing that from 0 to -7 is 7 spaces.

8 0
3 years ago
How do you solve this? r^2+32=12r
Andre45 [30]

Answer:

r = {-8, -4}

Step-by-step explanation:

Simplifying

r2 = -32 + -12r

Solving

r2 = -32 + -12r

Solving for variable 'r'.

Reorder the terms:

32 + 12r + r2 = -32 + -12r + 32 + 12r

Reorder the terms:

32 + 12r + r2 = -32 + 32 + -12r + 12r

Combine like terms: -32 + 32 = 0

32 + 12r + r2 = 0 + -12r + 12r

32 + 12r + r2 = -12r + 12r

Combine like terms: -12r + 12r = 0

32 + 12r + r2 = 0

Factor a trinomial.

(8 + r)(4 + r) = 0

Subproblem 1

Set the factor '(8 + r)' equal to zero and attempt to solve:

Simplifying

8 + r = 0

Solving

8 + r = 0

Move all terms containing r to the left, all other terms to the right.

Add '-8' to each side of the equation.

8 + -8 + r = 0 + -8

Combine like terms: 8 + -8 = 0

0 + r = 0 + -8

r = 0 + -8

Combine like terms: 0 + -8 = -8

r = -8

Simplifying

r = -8

Subproblem 2

Set the factor '(4 + r)' equal to zero and attempt to solve:

Simplifying

4 + r = 0

Solving

4 + r = 0

Move all terms containing r to the left, all other terms to the right.

Add '-4' to each side of the equation.

4 + -4 + r = 0 + -4

Combine like terms: 4 + -4 = 0

0 + r = 0 + -4

r = 0 + -4

Combine like terms: 0 + -4 = -4

r = -4

Simplifying

r = -4

Solution

r = {-8, -4}

3 0
3 years ago
How many pounds is 2.7 kilograms?
Triss [41]
1 kg = 2.20462 lbs

so 2.7 kg = 2.7(2.20462) = 5.952474....rounds to 5.95 lbs
8 0
3 years ago
Point C'(-4,-3)C
Arturiano [62]

Answer:

i very diffucult question

6 0
3 years ago
River C is 300 Miles Longer than River D. If the sum of their lengths is 5,570 miles, what is the length of each river?
d1i1m1o1n [39]
x-\ length\ of\ river\ D\\&#10;x+300-\ length\ of\ river\ C\\\\&#10;5570=x+x+300\\&#10;5570=2x+300\ \ \ | subtract\ 300\\5270=2x\ \ \ | divide\ by\ 2\\x=2635\\\\&#10;River\ C\ is\ 2935miles\ long\ and\ river\ D\ 2635\ miles\ long.
6 0
3 years ago
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