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3 years ago

The length of a rectangle is 2 cm more than the width. The perimeter is 20 cm. Find the length and width

Mathematics

1 answer:

Firdavs [7]3 years ago

6 0

Answer:

length = 7

width = 3

Step-by-step explanation:

the rectangle has four sides. All the sides added together give the 20 cm perimeter .

first find out the the approximate measurement of one side .

20÷4 = 5 cm

now you need to do addition and subtraction.

the width is 2cm less than the length

therefore the width = 5 - 2= 3cm

the length is 2cm more

therefore the length = 5 + 2 = 7 cm

7cm+7cm + (3cm ×2 ) = 20 cm .

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seropon [69]

Answer:

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(b-3)(b-1)=0

either

b=3 or b=1

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2n²+4n+2=0

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3 0

2 years ago

1 2 3 4 5 6 7 8 9 10 TIME REMAINING 54:32 Because the lid of a marker is wider than the marker itself, a set of markers can be p

tia_tia [17]

Answer:

10 Square Inches

Step-by-step explanation:

Trapezoid

Base =12 inches

Height =10 inches

Top side= 10 inches.

Area of a Trapezoid $=\frac{1}{2}(a+b)h, $where a and b are the lengths of the base and top respectively$$

$=\frac{1}{2}(10+12)*10\\=5*22=110 \:Square\:Inches$

Area of the Trapezoid=110 Square Inches

Rectangle

Base = 12 inches

Height =10 inches.

Area of a Rectangle=Base X Height

=12 X 10

=120 Square Inches

Difference in Area between the two packages

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=120-110

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5 0

2 years ago

Read 2 more answers

Joe can cut and split a cord of firewood in 3 fewer hours than Dwight can. When they work together, it takes them 2 hours. How

aalyn [17]

Answer:

Dwight will take 6 hours to finish the job alone and Joe will take 3 hours to finish the job alone.

Step-by-step explanation:

Let us assume the time taken by Dwight to split a cord of firewood = K hrs

So, the per hour rate of Dwight = $(\frac{1}{K})$

As, Joe uses 3 LESS hours then Dwight.

So, the time taken by Joe to split a cord of firewood = (K- 3) hrs

So, the per hour rate of Joe = $(\frac{1}{K-3})$

Now, when both of them wok together, it takes them 2 hours.

So, the per hour rate of BOTH of them = $(\frac{1}{2})$

⇒ Per hour rate of ( Dwight + Joe) = $(\frac{1}{2} )$

$\implies (\frac{1}{K}) + (\frac{1}{K-3}) = (\frac{1}{2})$

Now, solving for the value of K , we get:

$(\frac{1}{K}) + (\frac{1}{K-3}) = (\frac{1}{2})\\\implies \frac{(K-3) + K}{K (K-3)} = (\frac{1}{2})\\\implies 2(2K -3) = K^2 - 3K\\\implies k^2 - 3K -4K +6 = 0\\\implies K^2 - 7K + 6= 0\\\implies K^2 - 6K - K + 6= 0\\\implies K(K-6) -1(K - 6)= 0\\\implies (K-6)(K-1) = 0$

Implies either K = 6 Or K = 1

But if K = 1, (K-3) = 1- 3 = -2 hours would be A CONTRADICTION.

⇒ K = 6 hours

Hence, Dwight will take 6 hours to finish the job alone and Joe will take (k-3) = (6-3) = 3 hours to finish the job alone.

8 0

2 years ago

Victor has 1 and a half hours before he has to leave. He starts watching a movie that runs for 107 minutes. How many minutes of

Phoenix [80]

He does not miss any of the movie

6 0

3 years ago

I have a few questions! a) x−1.27=4.09 b) 2.3−y=2.301 c) t+3.04=14.3 d) 1.1+k=5.67

maks197457 [2]

Answer:

a.) x = 5.36

b.) y = - 0.001

c.) t = 11.26

d.) k = 4.57

Step-by-step explanation:

a) x−1.27=4.09

b) 2.3−y=2.301

c) t+3.04=14.3

d) 1.1+k=5.67

Solving. right?

a.) x = 4.09 + 1.27 = 5.36

b.) y = 2.3 - 2.301 = - 0.001

c.) t = 14.3 - 3.04 = 11.26

d.) k = 5.67 - 1.1 = 4.57

5 0

2 years ago