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alekssr [168]
3 years ago
12

Please help me on this

Mathematics
1 answer:
Stolb23 [73]3 years ago
5 0

Answer:

AX = 14

Step-by-step explanation:

The medians of a triangle intersect at its centroid.

The position of the centroid X from the vertex A is

AX = \frac{2}{3} AL = \frac{2}{3} × 21 = 14

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Lana71 [14]

Answer:

Rearranging Formula. This unit covers rearranging formulae. The manipulation of algebraic expressions is an important ... Changing the subject of a formula .

Step-by-step explanation:

8 0
3 years ago
Pat has 9 cards. Frank has 2 more cards that Steve. Steve has 3 cards. How many mire cards does Pat have than Frank?
Dahasolnce [82]

Answer:

4

Step-by-step explanation:

Frank has 5 cards.

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Therefore, Pat has 4 more cards than Frank.

Hope this helps!

3 0
3 years ago
A square pyramid has a volume of 108 cubic feet and a height of 4 feet.
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Answer:

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Step-by-step explanation:

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4 0
3 years ago
How would you go about finding the solution to this system of three equations in three variables? Be specific. For example, you
kupik [55]
I:2x – y + z = 7
II:x + 2y – 5z = -1
III:x – y = 6

you can first use III and substitute x or y to eliminate it in I and II (in this case x):
III: x=6+y
-> substitute x in I and II:
I': 2*(6+y)-y+z=7
12+2y-y+z=7
y+z=-5

II':(6+y)+2y-5z=-1
3y+6-5z=-1
3y-5z=-7

then you can subtract II' from 3*I' to eliminate y:
3*I'=3y+3z=-15

3*I'-II':
3y+3z-(3y-5z)=-15-(-7)
8z=-8
z=-1

insert z in II' to calculate y:
3y-5z=-7
3y+5=-7
3y=-12
y=-4

insert y into III to calculate x:
x-(-4)=6
x+4=6
x=2

so the solution is
x=2
y=-4
z=-1
3 0
3 years ago
Round the number 234,679 to the nearest hundred thousand
alexandr1967 [171]
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8 0
3 years ago
Read 2 more answers
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