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Firdavs [7]
2 years ago
14

A rectangle is 4 times as long as it is wide. The perimeter of a rectangle is 50 cm. What are the dimensions of the rectangle?

Mathematics
2 answers:
marissa [1.9K]2 years ago
7 0
We use the equation 2x+8x=50.

10x=50
x=5

The rectangle will be 20 cm long and 5 cm wide.

Hope this helps!
Contact [7]2 years ago
4 0

Answer:

5 cm ( width ) , 20 cm (length)

Step-by-step explanation:

Let width = w

Let length = 4w

Perimeter = 50

Perimeter formula for a rectangle = 2l + 2w

Plug in the variables (width and length)

2(w) + 2(4w) = 50

2w + 8w = 50

10w = 50

w = 5

<u>Remember, recall that length = 4w</u>

length = 4w

length = 4(5)

length = 20

Therefore, the dimensions of the rectangle are 5 by 20 cm

<h3><em>If this helped you, please make sure to give me the brainliest answer to support me. It will be greatly appreciated. Thank you!</em></h3>

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8 x 10-3 is how many times as great as 4 x 10-6?
Levart [38]

Answer:

About two times greater.

Step-by-step explanation:

8 times 10 minus 3 equals 77.

4 times 10 minus 6 equals 34.

77 minus 34 is 43

43 minus 34 is 9.

34 can only be put into 77 two times

5 0
3 years ago
I don't know how to do this :(
Lemur [1.5K]
Hello.

e is a mathematical constant, and it's like pi, it's irrational. It's approximately equal to 2.71828....

So, e^{\frac{3}{2}} = 4.4816... 
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8 0
2 years ago
Read 2 more answers
Prove that C(50,3) + C(50,4) = C(51,4)
valkas [14]

By definition of the binomial coefficient,

C(n,k) = \dfrac{n!}{k!(n-k)!}

so we have

C(50,3) + C(50,4) = \dfrac{50!}{3!47!} + \dfrac{50!}{4!46!} \\\\ = \dfrac{50!}{3!46!} \left(\dfrac1{47} + \dfrac14\right) \\\\ = \dfrac{50!}{3!46!} \times \dfrac{51}{188} \\\\ = \dfrac{51!}{3!46!} \times \dfrac1{4\times47} \\\\ = \dfrac{51!}{4!47!} \\\\ = \dfrac{51!}{4!(51-4)!} = C(51,4)

as required.

5 0
2 years ago
If f(x)= 5x + 4 and g(x) = 1/2x<br><br> find ,<br> a) fg(5)
Veseljchak [2.6K]

Answer:

f(g(5)) = 16.5

Step-by-step explanation:

To calculate f(g(5)), evaluate g(5) then substitute the value obtained into f(x)

g(5) = \frac{1}{2} × 5 = 2.5 , then

f(2.5) = 5(2.5) + 4 = 12.5 + 4 = 16.5

5 0
3 years ago
Read 2 more answers
There are 4 semi-trailer trucks parked in a line at the rest stop. After the first truck, each truck in the line weighs 2 tons m
Neko [114]
So we start off with what 4 numbers added together equal 32.
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and fourth truck 11.

5 + 7 + 9 + 11


5+7= 12 +9 = 21+11= 32.
6 0
3 years ago
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