Work out the area of a rectangle with base, b = 20mm and perimeter, P = 42mm.

Answers

Answer 1

Answer:

20mm

Step-by-step explanation:

base=20mm

base x 2 because there are two long lines

20 x 2 = 40

42-40=2

amount needed on either side to balance

height=1mm

20 x 1 = 20mm

area = 20mm

Answer 2

Answer:

Let the length of the rectangle be 'l'

We have,

Perimeter of rectangle, P = 42mm.

[tex]or, 2(l+b) = 42\\or, l +b = \frac{42}{2} = 21\\or, l + 20 = 21\\or, l = 1mm\\[/tex]

Area of rectangle = [tex]lb = 1(20) = 20mm^{2}[/tex]


Related Questions

What is 2 times 4 plus 20 and times 3?

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Answer:

84

Step-by-step explanation:

8+ (10-7)
in word form

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Answer:

eight plus the answer to 10 minus 7

Step-by-step explanation:

theres no explanation really.

Answer:

Eleven

Step-by-step explanation:

8+( 10-7)

8+ ( 3)

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The reason why we don't multiply 8 by 3 is because the parenthesis is multiplying a plus sign not 8

Find 3 ratios that are equivalent to the given ratio.
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6:7
24:28
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to find ratios that are equivalent to any given ratio you can just divide or multiply both numbers by the same number, like for 2:3, just multiply both numbers by 2 and you'll get 4:6 which is an equivalent ratio

select all relations that are functions from the choices below.

Answers

The correct answer is A

Find the length of a segment in the coordinate plane with endpoints (-1,3) and (4, 5).​

Answers

Answer:

square root 29

Step-by-step explanation:

use the distance formula sqrt(x2-x1)^2+(y2-y1)^2  

sqrt(-1-4)^2+(3-5)^2= sqrt 29.

what is an equation of the line that passes through the point (5,1) and is parallel to the line x+y=9

Answers

y=9-x is slope-intercept form of that line, which means it has a slope of -1. Parallel lines have the same slope, so the slope of this new line will also be -1.

To find the line that goes through (5,1), we can use a blank equation y=mx+b. We know that m=-1, so we can use the given point to find b:

y=mx+b
Y=-x+b
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So the line would be y=-x+6.

multiply. (x^2-5x+2)(3x^2+2x+3)

Answers

Answer:

3x^4-13x^3-x^2-11x+6

Step-by-step explanation:

Checked this on a website for you btw!

Answer:

3x^4-13x^3-x^2-11x+6

Step-by-step explanation:

Two parallel lines are cut by a transversal as shown below.
Suppose m<8=109. Find m<2 and m<3.

Answers

Answer:

measure 2 has to be 109 due to the alternate interior angles theorem. Measure 3 has to be 71 due to the supplementary angles theorem.

Angles 8 and 2 are alternate interior angles so they will be the same therefore,m∠2 and m∠3 will be 109° and 71° respectively.

What is an angle?

An angle is a geometry in plane geometry that is created by 2 rays or lines that have an identical terminus.

The identical endpoint of the two rays—is known as the vertex.

Given two parallel lines a transversal.

Angles 8 and 2 are alternate interior angles.

m∠8 = m∠2

m∠2 = 108°

Now,m∠2 and m∠3 are supplementary angles.

Therefore,m∠3 = 180° - 108° = 71°

Hence "Angles 8 and 2 are alternate interior angles so they will be the same therefore,m∠2 and m∠3 will be 109° and 71° respectively".

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A pump moves 70 gallons of water
per minute. How long will it take the
pump to empty a 2,030-gallon tank?

Answers

It will take 29 minutes to empty a 2,030- Gallon Tank.
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A biology class examined some flowers in a local meadow. The students saw 88 perennial
flowers and 12 annual flowers. What percentage of the flowers were perennials?

Answers

Answer:

88%

Step-by-step explanation:

Ramona bought rulers that cost $2 each.

Write an equation to represent the cost (C) for buying (n) number of rulers.

Answers

Answer:

C= 2(n)

Step-by-step explanation:

thsi is all I knwo how to set it because there might be soon I fo missing unless this is it

Solve.
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3) 400
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Answers

who to do with numbers . at least put some signs in there .

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Answers

Answer:

Common difference = -10

Step-by-step explanation:

Given:

Series;

-34,-44,-54,-64, -74

Find:

Common difference

Computation:

Common difference = a2 - a1

Common difference = -44 - (-34)

Common difference = -44 + 34

Common difference = -10

6x^{2} + 19 + 9x^{2} - 8
With Explanation

Answers

Answer:

I'mnot sure if you're asking for its roots..but here you go :)

Step-by-step explanation:

[tex] = 6 {x}^{2} + 19 + 9 {x}^{2} - 8 \\ = (6 {x}^{2} + 9 {x}^{2} ) + (19 - 8) \\ = 15 {x}^{2} + 8 \\ 15 {x}^{2} = - 8 \\ {x}^{2} = - \frac{8}{15} \\ \sqrt{ {x}^{2} } = \sqrt{ - \frac{8}{15} } \\ x = \sqrt{ \frac{8}{15}} \times \sqrt{ - 1} \\ x = \sqrt{ \frac{8}{15} } \times i \\ x1 = 0.7302i \\ x2 = - 0.7302i[/tex]

x to the 2nd power minus 6 equals 1

Answers

Answer:

2.646

Step-by-step explanation:

You have to 6 to the 1 and then take the square root of the number which is seven leaving you with 2.646

Answer:

x = ±√7

Step-by-step explanation:

Symbolically, we have x^2 - 6 = 1,  and so x^2 = 7, so that x = ±√7

Help I don’t get it pls help

Answers

Answer:

The average speed would be 10.1 kilometers per hour.

Step-by-step explanation:

If we convert both times into minutes, it will make solving this much easier. After finding the speed for both legs, we can find the average by adding the two values together and dividing by 2. This results in 10.11430568 or can be rounded to 10.1.

It would be 10.1!!!!!!!!!!!

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My spanish teacher just embarrassed me in front of everyone. How is everyone else doing?

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Answer:

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Step-by-step explanation:

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Answers

This should help ^-^
B: (1/2) exponent 5

That’s the answer I think

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Answers

Answer:

136.17059542672028

Step-by-step explanation:

just divide my friend

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Answer:

yes,that is right

Step-by-step explanation:

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a unit fraction is a fraction in the form 1/x so like 1/2,1/3,1/4,1/5,1/6,1/7,1/8 etc

Use the slider to change the scale factor. The rectangle is 20 by 16 and the scale factor is 0.25. What are the dimensions of the reduced rectangle? ​

Answers

Answer:

5 by 4

Step-by-step explanation:

sleepy haha sleepy sleepyy

Answer:

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Step-by-step explanation:

:)

How much is 2000mg in grams?

Answers

Answer:

2 grams

Step-by-step explanation:

It’s 2 grams ...............

A farmer owns a triangular field with a perimeter of 7a + 5b - 4. Which of the following could be side lengths of the field? Select three that apply.

Answers

Answer:

Did you get the answer?

Step-by-step explanation:

A rectangle is 12 inches long and 2 inches wide. Find its area. A 22 square inches 14 square inches 24 square inches 26 square inches​

Answers

im almost sure its 24 square inchs

Area of given rectangle = 24 square inches.

The correct option is C.

What is rectangle?

A rectangle is cyclic: all corners lie on a single circle. ; It is equiangular: all its corner angles are equal (each of 90 degrees).

Given,

Length of rectangle = 12 inches

Width of rectangle = 2 inches

Area of rectangle = length × width

                             = 12 × 2

Area of rectangle = 24 square inches.

Hence, 24 square inches is the area of rectangle.

Learn more about rectangle here:

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What is the slope of the line (-4,-1) (1,4)

Answers

Answer:

1

Step-by-step explanation:

Answer:

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Step-by-step explanation:

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What is the value of tan(60°)?
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B
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Answer:

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Solve the simultaneous equations
2x + 4y = 22
2x + 2y = 15

Answers

Answer:

1. x= 11+-27

2.x = 7.5 + -1y

Step-by-step explanation:

1. Move all terms containing x to the left, all other terms to the right.

Add '-4y' to each side of the equation.

2x + 4y + -4y = 22 + -4y

Combine like terms: 4y + -4y = 0

2x + 0 = 22 + -4y

2x = 22 + -4y

Divide each side by '2'.

x = 11 + -2y

Simplifying

x = 11 + -2y

2.Move all terms containing x to the left, all other terms to the right.

Add '-2y' to each side of the equation.

2x + 2y + -2y = 15 + -2y

Combine like terms: 2y + -2y = 0

2x + 0 = 15 + -2y

2x = 15 + -2y

Divide each side by '2'.

x = 7.5 + -1y

Simplifying

x = 7.5 + -1y

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Answers

Answer: 30

Step-by-step explanation: Assuming that the side lengths correspond with one another you can set up a ratio to solve

It should look something like this:   15/25 = 18/x

With this equation set up you can solve by cross multiplying. 25(18)=15x

Then start sloving:

25(18)=15x

450=15x

450/15=15x/15    (divide both sides by 15)

30=x

               

find the sale price of the item. round to two decimal places in necessary.

Answers

Answer:

50.82

Step-by-step explanation:

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