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Nady [450]
4 years ago
9

By what factor would you need to multiply the first and second equations to eliminate x? By what factor would you need to multip

ly the second and third equations to eliminate x?
Mathematics
1 answer:
gavmur [86]4 years ago
4 0
Equation 1 : x + y + z = 3.25
equation 2 : 12x + 2y + z = 9.50
equation 3 : 2x + 4y + 5z = ??

u would multiply equation 1 by -12.....take that result and add it to equation 2....this eliminates x.

u would multiply equation 3 by -6...take that result and add it to equation 2....this eliminates x


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The first would be 80 and the second is 8
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4 years ago
Use the right triangular prism to find the total surface area of the prism. Leave label off answer.
9966 [12]

Step-by-step explanation:

the total surface area is the sum of the 5 individual areas in the surface :

2 triangle sides (left and right).

1 back rectangle side

1 rectangle floor

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to get the length of the baseline (Hypotenuse) of the right-angled triangles on the side. we use Pythagoras

c² = a² + b²

where c is the Hypotenuse (the side opposite of the 90° angle).

c² = 3² + 4² = 9 + 16 = 25

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so, now, we have everything we need.

the area of a triangle side (since it is right-angled) :

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the area of the inclined front side

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4 0
2 years ago
Can someone please help?
Alexus [3.1K]

Answer:

L = 12

W = 8

Step-by-step explanation:

Area = L*W

L = W + 4

W = W

Area = 96

W ( W + 4) = 96

w^2 + 4W = 96

w^2  + 4w - 96 = 0

(w - 8)(w + 12) = 0

Only w - 8 = 0 will work

w - 8 = 0                       Add 8 to both sides

w = 8

w + 12 = 0 will not work because you have to subtract 12 from both sides to get the value for w.

w = - 12 which has no meaning for garden plots.

So the width = 8 and the length = w + 4 = 8 + 4 = 12

4 0
3 years ago
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Is this a right triangle or triangle is solving for?
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3 years ago
In the figure, PA and PB are tangent to circle O and PD bisects ∠BPA . The figure is not drawn to scale. For m
Mademuasel [1]

Angle AOC = 46°   Find angle BPO

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So AOC=BOC=46 degrees,

PBO is a right angle so BPO is complementary to BOC, so 42 degrees

Answer: 42 degrees

3 0
3 years ago
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