3 years ago

X=-2y-1 and 4x-4y=20 equals what ordered pair

Mathematics

1 answer:

Margarita [4]3 years ago

3 0

Answer:

B), x=-1, y=-2, z=1.

Step-by-step explanation:

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Sets Let A = {1, 2, 3, 8} and {x | x is an even whole number less than 9}, find An B

spin [16.1K]

A={1,2,3,8}

B={x|x is an even whole no less than 9}

B={2,4,6,8}

Now

$\\ \sf\longmapsto A\cap B=\{2,8\}$

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2 years ago

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Why did large numbers of Africans migrate to the Americas? A. Countries competed over resources during the Age of Exploration, a

Marianna [84]

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Step-by-step explanation:

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2 years ago

Please help with this question

user100 [1]

Answer:

(B) $58.48

Step-by-step explanation:

Total cost of nuts, including the discount and the tax:

(0.1 + 0.13 + 0.26)*20*[(100- 30)/100]*[(100 + 5.25)/100] = 7.22 (rounded)

Total cost of bolts, including the discount and the tax:

(0.45 + 0.52 + 0.63+0.93)*35*[(100- 45)/100]*[(100 + 5.25)/100] = 51.26 (rounded)

Total amount Carl paid:

7.22 + 51.26 = 58.48

Correct choice is B

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2 years ago

A school play earned over $250 from selling tickets, which cost $11 each. Which of the following inequalities models this situat

jeyben [28]

Its B because its supposed to be OVER 250

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2 years ago

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A woman walks due west on the deck of a ship at 3 mi/h. The ship is moving north at a speed of 22 mi/h. Find the speed and direc

Minchanka [31]

Answer: The speed is 22.2 mi/hr and woman is 8° north relative to the surface of the water.

Step-by-step explanation:

Since we have given that

Speed at which woman walks due west = 3 mi/hr

Speed at which ship moving due north = 22 mi/hr

Now it forms "Pythagorus theorem":

So, it becomes,

$H^2=B^2+P^2\\\\H^2=3^2+22^2\\\\H^2=9+484\\\\H^2=493\\\\H=\sqrt{493}\\H=22.20\ mi/hr$

And the direction of the woman relative to the surface of the water is given by

$\theta=\sin^{-1}x(\dfrac{3}{22.2})=7.76\approx 8^\circ$

Hence, the speed is 22.2 mi/hr and woman is 8° north relative to the surface of the water.

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3 years ago