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2 years ago

An advertisement in a magazine has a width of 80 mm and a height of 125 mm. Find

Mathematics

1 answer:

Alecsey [184]2 years ago

3 0

Answer:

perimeter calculator online

Step-by-step explanation:

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How are basic facts can help you find 10*20*30*40 mentally

Lena [83]

When you do the multiplication you can notice that 10, 20, 30, 40 all have 0's at the end.

So that means 10 *20*30*40 = 1*2*3*4*10000 = 24*10000 = 240,000

5 0

2 years ago

Use the figure below to answer the questions.

Archy [21]

Answer:

a. What is the name of the 3D shape?

The name of the 3D shape is Prism

b. What is the formula for total surface area for this shape?

Total surface area:

$S=2A_{b}+P_{b}h$

c. What is the surface area of the figure?

The surface area of the figure is 144 cm²

Step-by-step explanation:

a. What is the name of the 3D shape?

The 3D shape has two congruent and parallel faces (triangles) and the other faces are parallelograms, then the 3D shape is a prism

b. What is the formula for total surface area for this shape?

Total Surface area:

$S=2A_{b}+P_{b}h$

where:

Area of the base of the prism: Ab

Perimeter of the base: Pb

Height of the prism: h

c. What is the surface area of the figure?

The base of the prism is a triangle. Then to calculate the area of the base, we must use the formula to calculate the area of a triangle:

$A_{b}=\frac{bh}{2}\\ A_{b}=\frac{(4 cm)(3 cm)}{2}\\ A_{b}=\frac{12cm^{2} }{2}\\ A_{b}=6cm^{2}$

The perimeter of the base is the perimeter of the triangle, equal to the sum of the sides of the triangle:

$P_{b}=4cm+3cm+5cm\\ P_{b}=12cm$

h: Height of the prism is the distance between the bases of the prism (the triangle), then h=11 cm

Then, replacing in the formula the known values:

$S=2(6 cm^{2})+(12 cm)(11 cm)\\ S=12 cm^{2}+132 cm^{2}\\ S=144 cm^{2}$

8 0

2 years ago

Image down below thx

damaskus [11]

Answer:

question 2 answer you wrote correct

question 3 answer is 20

3 0

2 years ago

Read 2 more answers

Line is parallel to line b and m<7=135. Find m<4

umka21 [38]

I think the answer might be 45

5 0

2 years ago

Please please help me with this.

puteri [66]

Answer:

Step-by-step explanation:

Since the inequality is < then the line separating the shaded and plain regions will be broken.

Thus graph A or B

Choose a test point in each shaded region and check validity of solution

From A choose (0, 2), then

2 < 0 + $\frac{4}{7}$ → 2 < $\frac{4}{7}$ ← False

From B choose (0, - 2), then

- 2 < 0 + $\frac{4}{7}$ → - 2 < $\frac{4}{7}$ ← True

Thus the graph representing the inequality is B

5 0

2 years ago