2 years ago

a rectangle has a length of 12 and an unknown width x. write expression for the permeter and area of rectangle

Mathematics

1 answer:

svet-max [94.6K]2 years ago

7 0

If the width is literally x then:
12(2)+2(x)
24+2x is the perimeter

12(x)
12x is the area

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In 1892, George W.G Ferris, an engineer from Illinois, designed and built the first ferris wheel. This wheel was 250 feet in dia

Fed [463]

D=2r
250=2r
250/2=r
125=r

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2 years ago

there are 12 students who play the clarinet and 16 students who play the viola. what does the ratio 16:12 describe?

Oksi-84 [34.3K]

Answer: The ratio 16:12 describes the ratio of the number of students who play the viola to the students who play the clarinet.

Step-by-step explanation:

Given : Number of students who play the clarinet= 12

Number of students who play the viola=16

We know that ratio of A to B is represented by A:B.

Since, the number '12' is representing " students who play the clarinet" and number '16' is representing " students who play the viola"

So , the ratio 16:12 describes the ratio of the number of students who play the viola to the students who play the clarinet.

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2 years ago

A system of equations is shown below:

user100 [1]

<span>3x − y = 2

y = 3x - 2

x + y = 6

x + 3x - 2 = 6

4x - 2 = 6

4x = 6 + 2

4x = 8

x = </span> $\frac{8}{4}$

x = 2

Hence, the x co-ordinate is 2.

5 0

3 years ago

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Can someone plz help me find the area for this composite figure plzzzz I beg u

Anarel [89]

$S_1 = \frac{a+b}{2}h = \frac{7+9}{2}*5=\frac{18*5}{2}= 9 * 5 = 45~m^2$

$S_\triangle = \frac{ab}{2} = \frac{5*9}{2} = \frac{45}{2} = 22,5~m^2$

$S = S_1 + S_\triangle = 45 + 22,5 = 67,5~m^2$

Answer: 67,5 m².

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3 years ago

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A student is finding the measures of the angles in a triangle that have the ratio 4:4:7. Find the mistake and correct it.

7nadin3 [17]

suppose 4:4:7 be 4x, 4x, 7x

or, 15x = 180°

or, X = 180/15

or, X = 12

therefore,

4x = 4x12= 48

4x= 4x12= 48

7x= 7x12= 84

so if you plus all of them you get 180

8 0

1 year ago