All categories

3 years ago

Please I need some help on this

Mathematics

2 answers:

jeyben [28]3 years ago

8 0

Answer:

Step-by-step explanation: a

Studentka2010 [4]3 years ago

4 0

Answer:

22.5%

Step-by-step explanation:

Given the dimensions of the screen to be 20by4, the area will be given using formula of area if a square since the screen is square I'm shape.

Area of the screen = length × length

Area of the screen = 20×4 = 80

Similarly, if the dimension of the image is 9by2 its area will be given as;

Area of the image = 9×2

= 18.

The percentage of the total screen occupied by the image can be expressed as;

Area of image/Area of screen × 100%

= 18/80×100%.

= 1800/80

= 22.5%

This means the image covers 22.5% of the total screen.

You might be interested in

What is are if a rectangle of length of 5 and width of 3x-5y+6What is the area of a rectangle with a length of 5 and a width of

lawyer [7]

The area of rectangle is 15x - 25y + 30 sqaure units

Solution:

Given that, a rectangle with a length of 5 and a width of 3x - 5y + 6

To find: Area of rectangle

The area of rectangle is given by formula:

$Area = length \times width$

From given,

Length = 5

Width = 3x - 5y + 6

Substituting the values in formula, we get,

$Area = 5 \times (3x - 5y + 6)\\\\\text{Multiply 5 with each term inside the bracket }\\\\Area = 5(3x) -(5)(5y) +5(6)\\\\\text{Simplify the above expression }\\\\Area = 15x -25y + 30$

Thus area of rectangle is 15x - 25y + 30 sqaure units

6 0

3 years ago

How to find the answer

Valentin [98]

-4+1= -3 -3•-6=18 first you add what's in the parentheses then multiply by the outside.

6 0

3 years ago

Read 2 more answers

3 of 8 The area of a circle is 16.71cm2. Find the length of the radius rounded to 2 DP.

Cerrena [4.2K]

Answer:

Radius = 2.31 cm

Step-by-step explanation:

Area of circle = 16.71 square centimeters

$\pi r^2 = 16.71 \\3.14r^2=16.71\\r^2=\frac{16.71}{3.14}\\r^2=5.32\\\sqrt{r^2}=\sqrt{5.32}\\r=2.306$

Radius of circle = 2.31 centimeter

6 0

3 years ago

Hi are you able to solve it by using a step called exponential equations?

andriy [413]

Given the equation:

$6^{2-3x}=6^{-2x-2}$

since both bases are 6, we can equate both exponents to get the following equation:

$2-3x=-2x-2$

solving for x, we get:

$\begin{gathered} 2-3x=-2x-2 \\ \Rightarrow-3x+2x=-2-2=-4 \\ \Rightarrow-x=-4 \\ \Rightarrow x=4 \end{gathered}$

therefore, the solution of the equation is x = 4

6 0

1 year ago

Which unit rate is the lowest price per ounce

jonny [76]

Answer:

2: choice b

Step-by-step explanation:

a: $1.66 / 10 oz = $0.166/oz

b: $3.22 / 20 oz = $0.161/oz

Answer: 2: choice b

5 0

2 years ago