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Jlenok [28]
3 years ago
13

NEED HELP ASAP 30 POINTS

Mathematics
1 answer:
Maksim231197 [3]3 years ago
4 0
What does part a mean i dont understand
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Find the perimeter of a square with side a. Are the perimeter of the square and the length of its side directly proportional qua
inna [77]

The perimeter of a square with side a = 7.2 cm is 28.8 cm. Yes there exists a direct proportional relationship between Side length and Perimeter of square

<h3><u>Solution:</u></h3>

Given that side of square "a" = 7.2 cm

We have to find the perimeter of square

<em><u>The perimeter of square is given as:</u></em>

Perimeter of square = 4a

Where "a" represents the length of side of square

Substituting the given value a = 7.2 cm in above formula, we get perimeter of square

Perimeter of square = 4(7.2) = 28.8 cm

<em><u>Are the perimeter of the square and the length of its side directly proportional quantities?</u></em>

\begin{array}{l}{\text { perimeter of square }=4 a=4 \times \text { length of side }} \\\\ {\frac{\text { perimeter of square }}{\text { length of side }}=4}\end{array}

The Perimeter is equal to a constant times the Side length, or the Perimeter divided by the Side length is equal to four. So this is definitely a proportional relationship between Side length and Perimeter.

Two values are said to be in direct proportion when an increase in one results in an increase in the other.

So when length of sides increases, perimeter also increases

Hence perimeter and length of side of square are directly propotional quantities

4 0
3 years ago
Because of the fear of player injury, the San Francisco Seals give their
castortr0y [4]

Answer:22

Step-by-step explanation:

22

5 0
2 years ago
What is the value of 7(4 + x) when x = 5?
NikAS [45]

Step-by-step explanation:

❉ \underline{ \underline{ \sf{Given}}} :

  • x = 5

❉ \underline{ \underline{ \sf{To \: find}}}  :

  • value of 7 ( 4 + x )

Plug the value of x and simplify :

⟿ \sf{7(4 + 5)}

Add the numbers : 4 and 5

⟿ \sf{7 \times 9}

Multiply 7 by 9

⟿ \boxed{  \sf{63}}

\red{  \boxed{ \boxed{ \tt{⇾Our \: final \: answer : 63}}}}

Hope I helped ! ♪

Have a wonderful day / night ! ツ

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8 0
3 years ago
What are the equivalent fractions for 2 1/5 and 1 5/6 using 30 as the common denominator
Anuta_ua [19.1K]

Answer:

2 6/30 and 1 25/30

Step-by-step explanation:

First, you need to find 30÷5 and 30÷6. You do this because you need to know the multiplier when you create an equivalent fraction. 30÷5 is 6 and 30÷6 is 5. 2 1/5. You need to multiply the 1 and 5 by 6, that is 2 6/30. 1 5/6. 5 and 6 multiplied by 5 is 25 and 30. 1 5/6=1 25/30

4 0
2 years ago
3.
RideAnS [48]

Answer:

4.5 ft

Step-by-step explanation:

Given that the two fugures in the question above are similar, it means they have the same shape, even though they are if different sizes, the ratio of their corresponding sides are proportional. Thus,

18/x = 8/2

Let's solve for x as required.

We have,

18/x = 8/2

=>Cross multiply:

18 × 2 = 8 × x

36 = 8x

=>Divide both sides by 8

36/8 = x

4.5 = x

x = 4.5 ft

The first option is our answer = 4.5 ft

5 0
3 years ago
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