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Lynna [10]
3 years ago
7

(Hurry pleasee) Mrs Jacobs has 24 fifth grade students in her class one third of them are boys. The rest are girls how many stud

ents in the class are girls
Mathematics
2 answers:
astraxan [27]3 years ago
7 0

Answer:

16

Step-by-step explanation:

one third of 24 is eight, 8x2=16

Keith_Richards [23]3 years ago
5 0

Answer:

16

Step-by-step explanation:

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The perimeter of a rectangle is 30 cm and its length is x cm. Find its area in terms of x. step by step explanation.​
Debora [2.8K]
<h3>Question:</h3>

The perimeter of a rectangle is 30 cm and its length is x cm. Find its area in terms of x.

<h3>To find:</h3>

  • Area in terms of x

<h3>Given:</h3>

  • Perimeter = 30 cm

  • L = x

<h3>Answer :</h3>

<u>To</u><u> </u><u>find</u><u> </u><u> </u><u>area</u><u> </u><u>first</u><u> </u><u> </u><u>we</u><u> </u><u>should</u><u> </u><u>know</u><u> </u><u> </u><u>value</u><u> </u><u> </u><u>of</u><u> </u><u>with</u><u>.</u>

So first Let's find width by using this formula:

\blue{\boxed { \sf \underline {Perimeter=2(Length+Width)}}}

Insert Value of length and perimeter.

:  \implies \sf 30 = 2(x + width)

:  \implies \sf  \dfrac{30}{2} = (x + width)

:  \implies \sf{}x + width =  \dfrac{ { \cancel{30}}^{ \: 15} }{ { \cancel{2}}^{ \: 1} }

:  \implies \sf{}x + width = 15

:  \implies \sf{}  \star \underline{\underline{ width = 15 - x}} \star

Now Let's find Area by using this formula

\blue{\boxed { \sf \underline {Area=Length \times Width }}}

: \implies \sf{}Area = x \times (15 - x)

:  \implies \sf{}  \star \underline{\underline{ Area = 15x -  {x}^{2}  \: cm {}^{2} }} \star

hope it helps!

3 0
3 years ago
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