All categories

3 years ago

Ok guys i need some help

Mathematics

1 answer:

Strike441 [17]3 years ago

5 0

Hello!

The surface area is the area of all of the shapes on the net added up. First we will find the area of the two triangles.

A=0.5bh
A=0.5(3·6)
A=0.5(18)
A=9

Since there are two triangles we double this area, giving us 18.

Now let's find the length of the two side rectangles.

7(4)=28
28+28=56

Now to find the middle rectangle.

6(7)=42

Now we add up all of the area to find the surface area.

42+56+18=116

The surface area is 116 cm².

I hope this helps!

You might be interested in

1. Which of the following measurements could be the three side lengths of a right triangle? a. 4 cm, 5 cm, 9 cm b. 12 cm, 20 cm,

HACTEHA [7]

Answer:

b and c

Step-by-step explanation:

The Triangle Inequality Theorem lets us know that the sum of the two shortest sides of the triangle must be greater than the third side of the triangle.

In both A and D, the sum of the shortest two sides are equal to, not greater than the third side, so they will not form a triangle.

In B, 12+20 is 32, which is greater than 25. And in C, 18+24 is 42, which is greater than 30, so they both will form a triangle.

8 0

3 years ago

You have two cards with a sum of (-12) in your hand. what two cards could you hsve

kirill115 [55]

The way the question is written, you could have almost anything in your hand. All they have to do is add to - 12.

-14 and 2

- 11 and - 1

-12 and 0

- 82 and 70

4 0

3 years ago

Find the exact value of each trigonometric function evaluated at the given angle.

viktelen [127]

Answer:

Step-by-step explanation:

1. A cell is identified by its ........

a. Cell pointer b. cell address c. Box

2. When you measure cones, in which directions you should click on the dots

representing cones.

a. clockwise b. Anticlockwise c. Straight

3. Name the software that can make models of molecules included in

GNU/Linux ?

a. Geogebra b. Kalzium c. Ghemical

4. The abbreviation for Physics Education Technology?

a. PhET b. PHET c. PheT

5. For giving background colour to a slide, click ................. in Slide Menu

a. Character b. Properties c. Paragraph

II. Fill in the blanks (5 x 1 = 5 marks)

6. ............. is the model of pre-designed slides in a presentation software.

7. Name the GNU Linux software that helps to understand the particle nature

of matter.

8. .................. helps you to copy data or formulae to the adjacent cells.

9. What is the name of the tool in GeoGebra used for drawing triangle?

10. To give border lines to the cells in the table select ........... from Format

menu.

P.T.O

III. Match the following (5 x 1 = 5 marks)

Column A Column B

11. PhET a. Microsoft Power Point

12. Kalzium b. Geometrical Shapes

13. Presentation Software c. Calligra Sheets

14. GeoGebra d. Periodic Table

15. Spreadsheet Software e. States of matter

IV. Answer the following questions (5 x 1 = 5 marks)

16. What was the major limitation of Overhead Projector?

17. Which window is to be selected to get information about the elements in

the Kalzium software?

18. Name the website address of PhET Online Simulation?

19. What do you mean by Fill Handle tool in Spreadsheet software?

20. How can you draw triangles and polygons easily, using the Polygon tools?

7 0

2 years ago

Identify which table shows a direct variation.

DochEvi [55]

Only Table 2 shows direct variation. Every y value is 7 times the associated x value.

8 0

3 years ago

Anna is in charge of the alumni fundraiser for her alma mater. She is selling pre-sale tickets for $10 and at-the-door tickets $

Ivenika [448]

Answer:

D. 67

Step-by-step explanation:

To help me see the region we needed to look at, I wrote the inequalities out.

Let x be number of pre-sale tickets and y be the number of at-the-door tickets as your graph suggests.

So one of the inequalities about number of where the other one is about cost.

You are given x+y is no more than 400 or x+y<=400 (the top line graphed in your picture is x+y=400).

You are given 10x+25y is at least 5000 or 10x+25y>=5000 (the bottom line graphed in your picture).

I solved both of these for y.

x+y<=400

Subtract x on both sides giving y<=-x+400 (shaded below line because of the y< part).

10x+25y>=5000

Subtract 10x on both sides:

25y>=-10x+5000

Divide both sides by 25:

y>=-2/5 x+200 (shaded above the line because of y> part).

The region we should then be looking at is:

Let's look at the points (0,400), (0,200), and finally (333,67).

Cost=10x+25y

Let's plug in

Cost=10(0)+25(400)=10000

Cost=10(0)+25(200)=5000 (can we go lower than 200)

Cost=10(333)+25(67)=5005 (our y is lower 200 so far this is the winner)

Cost 10(334)+25(66)=4990 (didn't meet the 5000 dollar requirement)

67 D.

(Also if you look at the graph 66 would not be included in the shaded region; it would be too low)

5 0

3 years ago

Read 2 more answers