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Gala2k [10]
3 years ago
5

What is 9x9 is 81 because if you count by 9 times the 9 is 81

Mathematics
1 answer:
mote1985 [20]3 years ago
6 0

Answer:

Yes it's 81

Step-by-step explanation:

9 x 9 = 81

9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 + 9 = 81

Your welcome

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Ross drives 260 miles in 4 hours. If Ross continues to drive at the same rate, how many miles can he drive in 8 hours?
irakobra [83]
520 miles.
Ross would be driving double the hours so 260x2=520
5 0
2 years ago
So, I had assumed that this one was going to have the answer of 36...just out of pure guessing. I got that wrong so now I'm curi
Elena L [17]
Lets write formulas for volume of both cone and can

Cone:
Vc = Bc*Hc/3

Can:
V = B*H

where B is basis and H is height for each

Now because cone fits perfectly inside can that means that both B and H are the same
from this we can see that cone has 3 times less volume than a can that cone is inside of.

if can has 36 volume that means that cone has:
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3 0
3 years ago
How many edges does a polyhedron with 28 faces and 40 vertices have calculator?
emmasim [6.3K]
Hey user!

your answer is here..

we know about EULER'S FORMULA, it is a formula used to verify a polyhedron or to calculate the number of faces, vertices or edges.

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given :-

faces = 28, verticies = 50 and edge = ?

we know that F + V - E = 2

therefore 28 + 40 - E = 2

==> 68 - E = 2

==> - E = 2 - 68

==> - E = - 66

==> E = 66

hence, the number of edges of the polyhedron is 66.

cheers!!
6 0
3 years ago
Read 2 more answers
The point A(4, 2) is reflected over the point (-1,4) and it's image is point B. What
r-ruslan [8.4K]

Answer:

  B = (-6, 6)

Step-by-step explanation:

If M is the midpoint of AB, then ...

  B = 2M - A

  B = 2(-1, 4) -(4, 2) = (-2-4, 8-2)

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7 0
3 years ago
The value of a in the equation ax + y = 5 , if x = 2 and y = 3 is a) – 1 b) 0 c) 1
sasho [114]

Answer:

c) 1

Step-by-step explanation:

=> ax+y = 5

<u><em>Putting x =2, y =3</em></u>

=> a(2)+3 = 5

=> 2a = 5-3

=> 2a = 2

<em>Dividing both sides by 2</em>

=> a = 1

3 0
3 years ago
Read 2 more answers
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