All categories

2 years ago

Number 2 and 3 please help me please I really need help I need help

Mathematics

1 answer:

Murljashka [212]2 years ago

8 0

Answer:2) 20cm

3) 90m

Step-by-step explanation: 2) 10x2=20cm

3) 35x2=70, 20x2=20, 70+20= 90m

You might be interested in

HELP ME PLEASE I DONT UNDERSTAND!!!!!

rewona [7]

Answer: 5 pounds

Step-by-step explanation: 90 - 47.65 ÷ 8.47 = 5

8 0

2 years ago

Which of the following points is not coplanar with polnis C, D and E?

Leokris [45]

Answer: Point R

===================================================

Explanation:

The term "coplanar" means "points that are in the same plane".

Points A, S and U are all in the base plane. Think of this as the floor of the pyramid, so to speak. These three points are with C, D, and E, which are also on the base plane or floor plane. So we can say that all of these points are coplanar.

In contrast, point R is not on the floor plane. It's higher up. So that's why R is not coplanar with points C,D,E.

7 0

2 years ago

The map of a biking trail is drawn on a coordinate grid.

Nadusha1986 [10]

I don’t see the coordinate grid..?

5 0

3 years ago

An exterior angle of a regular convex polygon is 40°. What is the number of sides of the polygon?

seraphim [82]

Answer:

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

$= (n - 2 )\times 180$

$Therefore, Each \ interior \ angle = (\frac{n - 2}{n} )\times 180$

$Sum \ of \ one \ of \ the \ interior \ angle \ with \ its \ exterior \ angle \ is \ 180^\circ$

$[ \ because \ straight \ line \ angle = 180^\circ \ ]$

That is ,

$Exterior \ angle + Interior \ angle = 180^\circ\\\\40^ \circ + (\frac{n-2}{n}) \times 180 = 180^\circ\\\\40 n + 180n - 360 = 180n\\\\40n = 180n - 180n + 360 \\\\40n = 360 \\\\n = 9$

Sum of exterior angles of a regular polygon = 360

Given 1 exterior angle of the regular polygon is 40

Therefore ,

$n \times 40 = 360\\\\n = \frac{360}{40} \\\\n = 9$

8 0

2 years ago

Simplify<br>2x + x + x + 2y x 3y x y

nignag [31]

Answer: 2y^3x4+4x

Step-by-step explanation:

4 0

2 years ago