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3 years ago

Help. If you know please help me cause I really dont know how to do these kind of problems

Mathematics

1 answer:

Natalka [10]3 years ago

6 0

In order: 32°, 78°, 71°, 54° , 154°, 113° , 81° , 77° , 91° , 83° , 159° , 86° hope this helps just color in order of the degrees given and it will lead you to the end.

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write the formula to calculate area of quadrilateral when Co ordinates are given can you answer it please...

Alexxx [7]

If four coordinates are given then:-

Find length of the sides using distance formula

$\boxed{\sf \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}}$

Now break down into two triangles .
Use herons formula and find areas of the triangles .add them and get the area

3 0

3 years ago

Read 2 more answers

A poster of area 24,000 cm2 has blank margins of width 10 cm on the top and bottom and 6 cm on the sides. find the dimensions th

bogdanovich [222]

The total poster area is:

A = (l + 20) (w + 12)

where l and w is the length and width of the printed area

24000 = (l + 20) (w + 12)

l = [24000/(w + 12)] – 20

The printed area is simply:

a = l w

substituting l:

a = ([24000/(w + 12)] – 20) w

a = (24000w)(w + 12)^-1 – 20 w

Taking the first derivative da/dw:

da/dw = (24000)(w + 12)^-1 - (24000w)(w + 12)^-2 – 20

Set da/dw = 0:

(24000)/(w + 12) - (24000w)/(w + 12)^2 – 20 = 0

Multiply everything by (w + 12)^2:

24000 (w + 12) – 24000w - 20(w + 12)^2 = 0

24000w + 288000 – 24000w – 20 (w^2 + 24w + 144) = 0

-20 w^2 – 480 w + 285120 = 0

w^2 + 24 w = 14256

Completing the square:

(w + 12)^2 = 14256 + 12^2

w + 12 = ±120

w = 108 cm

l = [24000/(w + 12)] – 20

l = [24000/(108 + 12)] – 20

l = 180 cm

Therefore the dimensions of the whole poster are:

w + 12 = 120 cm

l + 20 = 200 cm

The poster should be 200 cm x 120 cm

6 0

3 years ago

If a number is subtracted from its square, the result is 2. find the number.

Westkost [7]

X= -1, 2

Just move the 2 to the other side to make it a quadratic equation then find the x values by factoring or using the quadratic formula.

8 0

4 years ago

Complete the steps to solve the equation 4e2 + 2x = x-3 by graphing.

12345 [234]

Answer:

1. x-3

3. x -coordinates

has no solution

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

The sum of two consecutive terms in the arithmetic sequence 4,9,14,19,... is 503; find these two terms

ad-work [718]

Notice that in ur sequence, there is a common difference of 5...that means u add 5 to each number to get to the next number.

so 2 consecutive terms would be : x and x + 5

x + x + 5 = 503
2x + 5 = 503
2x = 503 - 5
2x = 498
x = 498/2
x = 249

x + 5 = 249 + 5 = 254

so ur 2 numbers are : 249 and 254

8 0

3 years ago