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4 years ago

Yo plz help asap!! marking brainiest!!

Mathematics

2 answers:

Mila [183]4 years ago

7 0

The first one is x^2 -9x +20
The second one is x^2 -12x +20
The third one is x^2 +x -20
The fourth one is x^2 - 8x -20

TiliK225 [7]4 years ago

3 0

Answer:

1) a²-9a+20

2)a²-12a+20

3)a²+a-20

4)a²-8a-20

Step-by-step explanation:

use (foil)

front

outside

inside

last

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9th grade ..Plz solve this maths

8_murik_8 [283]

since the polygon has 8 chambers the angle of one chamber = 360/8 = 45°

so the angle WOP = 45°

now drawing a imaginary line which seperates the triangleWOP into half

so the angle of imaginary line is 45/2 = 22.5

sin(theta) = opp/hyp

since WP (opp) is unknown. take as x

sin(22.5) = x/44

0.383×4 = x

x = 1.532 (app) = 1.5 cm

perimeter = 1.5 × 8

= 12 cm

area of triangle WOP = 2×1/2 ×bh = bh

= 4×1.5

= 6 cm²

so the area of regular polygon = 8× area of a triangle

= 48 cm²

6 0

3 years ago

Eduardo’s average speed on his commute to work was 55 miles per hour. On the way home, he hit traffic and only averaged 40 miles

Angelina_Jolie [31]

40(1.25-t) is missing from the table

Time, speed, and distance are the three factors must be taken into account.

How to solve such time related questions?

The key concept for solving such questions is the relationship between speed, distance and time.

The relationship between them is Distance = Speed X Time

We provide both time and speed.

It is necessary to compute the distance.

55 miles per hour is the commuter speed

Worktime equals 1.25-T

Home-bound speed is 40 miles per hour.

1.25 seconds to get home

Time in Total = T + t = 1.25

Travel distance to home

Distance/Time x Speed

40 = Total Distance/t

Distance overall = 40 (1.25-t)

As a result, 40(1.25-t) is the right response.

Learn more about time related questions :

brainly.com/question/12876231

#SPJ4

6 0

2 years ago

Write an equation for the function using function notation

Softa [21]

(-1,3)(0,0)
slope(m) = (0 - 3) / (0 - (-1) = -3/1 = - 3

y = mx + b
slope(m) = -3
y int (b) = 0

ur equation is : y = -3x

function notation is : f(x) = -3x <==

3 0

3 years ago

There are 24 crayons in a box how many boxes will be needed for 16 children if each child gets 8 crayons?

otez555 [7]

Answer:5.33333

Step-by-step explanation:

1 child = 8 crayon

16 children = 128

-> 128 divided by 24

=5.33333

7 0

3 years ago

Read 2 more answers

Show that the angles of an equalateral triangle are 60°each

topjm [15]

Answer:

For an equilateral triangle, we know that all 3 sides of the triangle are equal. Accordingly, all the 3 sides of the equilateral triangle hold equal angles.

Since, we know, that the sum of all angles of any triangle be 180° .

Let each angle be a.

Thus,

Hence, we can show that all the 3 angles of an equilateral triangle hold equal angles; i.e. 60°.

Step-by-step explanation:

7 0

3 years ago