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saveliy_v [14]
3 years ago
6

My friend Harribo came into school one day and said all his plums had died when his granddad had brought them to St Pancras stat

ion ... If Harribo had grown 9 plum trees for 52 weeks (and all the plum trees were still growing) how many plum trees did Harribo's granddad kill when he de-rooted them and jammed them on St Pancras Station?
Mathematics
1 answer:
maw [93]3 years ago
6 0
His granddad killed none because it say all of the plum trees are still growing and it said plums died not the trees
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Need help with number 10 please
Naddika [18.5K]

Answer:

  Pilar is correct. Both systems have solution (-2, 4).

Step-by-step explanation:

Graphing, or any other means of solving these systems of equations reveals both systems have the same solution: (x, y) = (-2, 4).

_____

By Cramer's rule, the solution to the first set is ...

  x = (2(6)-4(2))/(2(5)-4(3)) = 4/-2 = -2

  y = (2(5)-6(3))/-2 = -8/-2 = 4

(x, y) = (-2, 4) is the solution to the first system

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Since the first equation of the second system is the same as the first equation of the first system, we know the above solution satisfies that equation. We only need to check to see if the same point satisfies the second equation of the second system:

  11(-2) +8(4) = -22 +32 = 10 . . . . . yes,

(-2, 4) is the solution of the second system

Pilar is correct that both systems have the same solution.

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Cramer's Rule tells you the solution to

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  • dx +ey = g

is ...

  • x = (bg -ec)/(bd -ea)
  • y = (cd -ga)/(bd -ea) . . . . same denominator as for x

I like to use Cramer's Rule when the solution is needed without a lot of steps. Here, we could use the Elimination method to eliminate the y-variable and solve for x. Then more steps are needed to find y. The writing out and explanation are tedious, so it is much simpler just to use a formula that gives the answer.

3 0
3 years ago
A ________ prism has two congruent, parallel bases and three lateral sides.
Umnica [9.8K]
The answer for the completion exercise shown above is: Triangular.

 Therefore, the complete text is:  "A triangular prism <span>has two congruent, parallel bases and three lateral sides".

 The triangular prisms are also define as polyhedron with a triangular base. This figure has five faces.</span>
7 0
3 years ago
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Please help me with this question
xz_007 [3.2K]
So you want me to write sentences?
4 0
3 years ago
(-4) + 8 =<br> -10 + 12<br> 9 +(-3)<br> (+3) + (-3)<br> 5 +(-2)<br> (-18) + 9 <br> 25 + (-30)
Alex Ar [27]

Step-by-step explanation:

  • 4
  • 2
  • 6
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  • -5

all these are the answers of your question

hope it is helpful to you

5 0
2 years ago
What is the area of this parallelogram? 10.35 cm² 12.5 cm² 20.25 cm² 30.6 cm² Parallelogram A B C D is composed of a square and
Taya2010 [7]

Answer:

30.6 cm²

Step-by-step explanation:

The area of the parallelogram is simply the sum of the areas of the component three shapes - the square and the two triangles.

Area of square = 4.5 cm × 4.5 cm = 20.25 cm²

Area of two triangles = 2 ×(1/2) × 2.3 cm × 4.5 cm = 10.35 cm²

Area of parallelogram =  20.25 cm² + 10.35 cm² = 30.6 cm²

5 0
3 years ago
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