3 years ago

Y=2x-7, 3x-2=9 solving systems

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

6 0

First you solve for x for the second system. Then you plug in x and y and then you should get your coordinates.

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8(−5d−9)−3(−6d+10) in simplest terms

professor190 [17]

Answer:

-22d -102

Step-by-step explanation:

8(−5d−9)−3(−6d+10)

Distribute

-40d -72 +18d -30

Combine like terms

-40d +18d -72 - 30

-22d -102

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3 years ago

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A carpenter has a rectangular wooden board. The diagonal of the board is 18 inches long and one side of the board is 12 inches l

BaLLatris [955]

In this question, it is given that the diagonal of the board is 18 inches long and one side of the board is 12 inches long.

Let the other side is of length b inches .

Now we use pythagorean identity, which is

$a^2 + b ^2 = c^2$

Here, a = 12 and c=18

Substituting these values, we will get

$12^2 + b^2 = 18^2 \\ 144 + b ^2 = 324 \\ b^2 = 324-144 \\ b^2 = 180 \\ b= \sqrt{180} \\ b = 13.4164 inches$

And the formula of perimeter is

$Perimeter = 2(Sum\ of \ legs)$

Substituting the values of the two legs, we will get

$Perimeter = 2(12+13.4164) = 50.83 inches$

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3 years ago

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27. A tank holds 240litres of water. How much water is in the tank when it is full?

Lera25 [3.4K]

Answer:

The answer would be A) 240 litres. This is because the question itself told us beforehand how much the tank can hold, which is 240.

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3 years ago

A pyramid has a regular hexagonal base with side lengths of 4 and a slant height of 6. Find the lateral area of the pyramid.

aleksandr82 [10.1K]

It should be 72 in^2.

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4 years ago

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-3 + 4x = 41<br> What's x

marusya05 [52]

Move the -3 to the other side which makes it 41 + 3 = 44

So now the equation looks like 4x=44

Now divide 44 by 4, equals 11

x=11

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3 years ago

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