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3 years ago

The length of a rectangular portrait is 2.5 time the width. The perimeter is 28 what is the length of the portrait

Mathematics

2 answers:

Kobotan [32]3 years ago

6 0

Answer:

length 10

Step-by-step explanation:

If we hace a width of x then the length is 2.5x. The perimeter of the rectangular portrait is the sum of all sides then: x+x+2.5x+2.5x as we know the perimeter is 28 then:

$x+x+2.5x+2.5x=28$

$2x+5x=28$

$7x=28$

$x=\dfrac{28}{7}=4$

As x is the width to know the length we have to multiply 4 by 2.5 then the length is 10.

Elina [12.6K]3 years ago

5 0

Answer:

Step-by-step explanation:

first ask teacher

second be polite

third ask help from your peers

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What is 4 9/10 expressed as a decimal? Enter your answer in the box.

soldier1979 [14.2K]

Answer:

4.9 is decimal form.

Step-by-step explanation:

4 9/10

Solve :

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3 years ago

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The function a(1) =1/2I^2 describes the area of an isosceles right triangle with leg I. Make a table of values for I=1,2,3 and 4

prohojiy [21]

Functions can be represented using equations, graphs and tables.

The function is given as:

$a(l) = \frac 12 l^2$

When l = 1, we have:

$a(1) = \frac 12 \times 1^2$

$a(1) = 0.5$

When l = 2, we have:

$a(2) = \frac 12 \times 2^2$

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When l = 3, we have:

$a(3) = \frac 12 \times 3^2$

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When l = 4, we have:

$a(4) = \frac 12 \times 4^2$

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Represent the above results as a table, we have:

1 0.5

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Read more about tables and functions at:

brainly.com/question/13136492

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3 years ago

What is the difference between (Picture 1) and (picture 2)? A. 0 B. 2 C. 5 D. 6

Vesnalui [34]

Answer:

The difference between the picture is 0 , option A .

Step-by-step explanation:

Given two figures as :

In figure A

The expression is 1 + 3 n , where n lies from 0 to 4

So , let f (n) = 1 + 3 n

Or,f ( n ) = 1 + 3 ×0 = 1 + 0 = 1

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so, summation of ( 1 + 3 n ) from n = 0 to 4 = 1 + 4 + 7 + 10 + 13 = 35

In figure B

The expression is 3 i - 5 , where i lies from 2 to 6

So , let g (i) = 3 i - 5

Or,g ( 2 ) = 3 ×2 - 5 = 6 - 5 = 1

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qwelly [4]

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