3 years ago

Use the elimination method to solve the system of equations.

Mathematics

1 answer:

tester [92]3 years ago

5 0

Answer:

(4.5,-6)

Step-by-step explanation:

$2x-3y = 27\\4x+3y = 0$

6x = 27

x = 27/6=4.5

9-3y = 27

-3y = 18

y = -6

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marissa [1.9K]

The formula of pyramid is 1/3 Bh where B is area of base and h is height.

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3 years ago

Learning goal: to understand the rules for computing dot products. let vectors a=(2,1,−4), b=(−3,0,1), and c=(−1,−1,2). part a -

miv72 [106K]

For this case we have the following vectors:
$a = (2,1, -4)

b = (- 3,0,1)

c = (- 1, -1,2)$
The dot product of two vectors is a scalar.
The point product consists of multiplying component by component and then adding the result of the multiplication of each component.
For the product point of the vectors a and b we have:
$a.b = (2,1, -4). (- 3,0,1)

a.b = (2) (- 3) + (1) (0) + (-4) (1)

a.b = - 6 + 0 - 4

a.b = - 10$
Answer:
The product point of the vectors a and b is:
$a.b = - 10$