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2 years ago

If the four lines are extended, which system would have only one solution?

Mathematics

1 answer:

Anettt [7]2 years ago

6 0

Answer:

A. Line a and line b

Step-by-step explanation:

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An 8-sided die is formed when two square pyramids are attached by their bases. The perimeter of the base shape is 6 centimeters.

lawyer [7]

Answer:

7.5cm²

Complete question:What is the surface area of the 8-sided figure?

Step-by-step explanation:

Consider the half of the 8-sided die i.e the pyramid ABCDE:

As the base is 6 of the perimeter, so each side of the base is 6/4=3/2

Now, the distance between the tallest points is 2 cm, so the height of Pyramid ABCDE is 1 cm.

Considering the right triangle EOM:

EO=1, OM= 3/4 (it is half of AB=3/2) and EM is the hypothenuse, so by the pythagorean theorem length of EM is

$\sqrt{1+ ( \frac{3}{4} )^{2} }= \sqrt{1+ \frac{9}{16} }= \sqrt{ \frac{25}{16} }= \frac{5}{4} (cm)$

5. So side EBC has area

$\frac{1}{2}BC*EM= \frac{1}{2}* \frac{3}{2}* \frac{5}{4}= \frac{15}{16}$

6. The total area is 8*Area(EBC)= $8* \frac{15}{16}= \frac{15}{2}=7.5 ( cm^{2} )$

3 0

2 years ago

I need to know this answer I've worked it out but not sure

a_sh-v [17]

See attached picture

7 0

3 years ago

What is 8 and 21/40 in decimal form? If don't uderstamd what is 8 and 21 over 40 in decimal form? Plz help thx✌️

Marrrta [24]

It is 8.525. what u do is 21÷40 and get .525 and then u add the 8 in the front and get 8.525

4 0

3 years ago

SOMEONE PLEASE HELP!!! HURRY

MAXImum [283]

Answer:

Slope of the line DV = -1

Step-by-step explanation:

Let point D (-5, 1) be $(x_{1}, y_{1})$

Let point V (-1, -3) be $(x_{2}, y_{2})$

$m=\frac{y_2-y_1}{x_2-x_1}$

Plug in the appropriate values,

$m = \frac{-3-1}{-1-(-5)} = \frac{-4}{4} = -1$

slope equals -1

4 0

1 year ago

How do you find the area of a traizoid

BaLLatris [955]

[(base + base)*high]/2

5 0

2 years ago