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lesya [120]
3 years ago
15

3b • a2 This for test

Mathematics
1 answer:
Eva8 [605]3 years ago
7 0
6ba is the answer you need
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18x26=? I don't get how to do this
elena-s [515]

Answer:

468

Step-by-step explanation:

Set it up like the following-

18

26

--------

108

360

--------

408

Take the right number (6) and multiply it with 18

6 x 18 = 108

Now do the same with 2, except put a 0 at the end

2 x 18 = 36

add 0

360

Add both numbers-

360 + 108 = 468

6 0
3 years ago
Can you help me with number 8
Verdich [7]

Answer:

A. :)

Step-by-step explanation:

Brainly?

7 0
2 years ago
Find the area ratio of a regular octahedron and a tetrahedron regular, knowing that the diagonal of the octahedron is equal to h
Anton [14]

Answer:

\frac{4}{3}

Step-by-step explanation:

The area of a regular octahedron is given by:

area = 2\sqrt{3}\ *edge^2. Let a is the length of the edge (diagonal).

area = 2\sqrt{3}\ *a^2

Given that the diagonal of the octahedron is equal to height (h) of the tetrahedron i.e.

a = h, where h is the height of the tetrahedron and a is the diagonal of the octahedron. Let the edge of the tetrrahedron be e. To find the edge of the tetrahedron, we use:

h=\sqrt{\frac{2}{3} } e\\but\ h=a\\a=\sqrt{\frac{2}{3} } e\\e=\sqrt{\frac{3}{2} }a

The area of a tetrahedron is given by:

area = \sqrt{3}\ *edge^2 = \sqrt{3} *(\sqrt{\frac{3}{2} }a)^2=\frac{3}{2}\sqrt{3}    *a^2

The ratio of area of regular octahedron to area tetrahedron regular is given as:

Ratio = \frac{2\sqrt{3}\ *a^2}{\frac{3}{2} \sqrt{3}*a^2} =\frac{4}{3}

7 0
3 years ago
A train traveled 300 miles at a constant speed. It took 5 hours. What is the constant of proportionality that describes the trai
Fudgin [204]

Answer:

60 miles an hour

Step-by-step explanation:

^^^^^^^^

5 0
3 years ago
429 divided by 7 with a remainder<br><br> A. 61 2/7 <br> B. 61<br> C. 69<br> D. 61 7/2
Stella [2.4K]

Answer:

61 with a remainder of 2

Step-by-step explanation:

...........

8 0
3 years ago
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