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2 years ago

A rectangle has a perimeter of 30cm the width of the rectangle is n cm the length of the rectangle is n+6cm

Mathematics

1 answer:

qwelly [4]2 years ago

8 0

Step-by-step explanation:

p=2(l+w)

30cm=2(n+6+n)

30cm\2=2n+6

15cm-6=2n

9cm=2n

n=4.5cm or w=4.5cm

l=w+6

l=4.5cm+6

l=10.5cm

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Please help!

Reika [66]

Answer:

(1,-5)

Step-by-step explanation:

The given system of inequalities are;

$y\:$

and

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The point that is a solution will satisfy the two inequalities.

Checking for (1,-5)

$-5\:$ and $-5\:$

$-5\:$ : True $-5\:$ : True

This point lies in the solution region.

Checking for (1,5)

$5\:$ and $5\:$

$5\:$ : False $5\:$ : False

This point does not lie in the solution region.

Checking for (5,1)

$1\:$ and $1\:$

$1\:$ : False $1\:$ : True

This point does not lie in the solution region.

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$5\:$ and $5\:$

$5\:$ : True $5\:$ : False

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3 years ago

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Verbalize 2(n^3+3n^2)=4n

Arada [10]

Answer:

A number cubed plus a 3 times a number squared all multiplied by 2 is equal to 4 times a number.

Step-by-step explanation:

Since we can't say "in parenthesis", we will have to say the expressions in the parenthesis first and then say "all multiplied by 2" to express parenthesis in word form. The rest are pretty straight forward.

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3 years ago

-x + 2y = 3 2x – 3y = -6

s2008m [1.1K]

Answer:

x = -3

y = 0

Step-by-step explanation:

Given equations :- 

-x + 2y = 3 ....... ( i )

2x - 3y = -6 ....... ( ii )

From ( i ) 

-x + 2y = 3

-x = 3 - 2y

x = 2y - 3 ........ ( iii )

From ( ii ) 

2x - 3y = -6

2x = -6 + 3y

$x = \frac{ - 6 + 3y}{2}$

........ ( iv )

Equating ( iii ) and ( iv )

x = x

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4y - 6 = -6 + 3y

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x = 2y - 3

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2 years ago

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Setler79 [48]

Answer:

Retail value is also known as the sticker value.

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2 years ago

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Josh is going to choose a two digit number. What is the probability that the sum of the digits will be nine?

stiv31 [10]

Answer:

4/45

Step-by-step explanation:

First find all the pairs that make 9 that are two digit:

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2 years ago

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