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3 years ago

Please help, I need the answer asap!

Mathematics

2 answers:

Lena [83]3 years ago

6 0

2 x 2 = 4 x 3 = 12

2 x 3 = 6 x 3 = 18

2 x 2 = 4 x 2 = 8 x 3 = 24 x 3 = 72

2x2 = 4 x 3 = 12 x 3 = 36

last one is the correct answer

valina [46]3 years ago

5 0

The correct answer is D. 2*2*3*3

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lys-0071 [83]

Answer:

$\bold{x =cos\theta}\\\bold{y=sin\theta}$

Step-by-step explanation:

The given system of linear equations is:

$(cos\theta)x+(sin\theta)y=1\\(-sin\theta)x+(cos\theta)y=0$

We have to solve the equations for the values of $x, y$ .

Let us use elimination method in which we eliminate one of the variables from the two variables.

For this, let us multiply the first equation by $sin\theta$ and second equation by $cos\theta$

Now, the equations become:

$(cos\theta.sin\theta)x+(sin\theta.sin\theta)y=sin\theta\\\Rightarrow (cos\theta.sin\theta)x+(sin^2\theta)y=sin\theta ....... (1)\\\\(-sin\theta.cos\theta)x+(cos\theta.cos\theta)y=0\\\Rightarrow (-sin\theta.cos\theta)x+(cos^2\theta)y=0 ..... (2)$

Now, let us add (1) and (2):

$(sin^2\theta)y+(cos^2\theta)y=sin\theta\\\Rightarrow (sin^2\theta+cos^2\theta)y=sin\theta\\\Rightarrow (1)y=sin\theta\\\Rightarrow y = sin\theta$

Using the equation:

$(-sin\theta)x+(cos\theta)y=0$

Putting value of $y$ :

$\Rightarrow (-sin\theta)x+(cos\theta)sin\theta=0\\\Rightarrow (sin\theta)x=(cos\theta)sin\theta\\\Rightarrow x = cos\theta$

So, the answer to the system of linear equations is:

$\bold{x =cos\theta}\\\bold{y=sin\theta}$

7 0

3 years ago

Find the sum of the two matrices: 17 12 −3 −2 + −4 −1 8 14 = w x y z w = x = y = z =

klasskru [66]

Answer:

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y =

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6 0

3 years ago

Consider the graph shown. Which of the following does not represent the rate of change found when using similar triangles? Choos

Luba_88 [7]

Answer:

C and D

Step-by-step explanation:

since the line is going up from points A to D it cannot be a negative number.

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8 0

3 years ago

Solve for x. Write the smaller solution first, and the larger solution second. (2x-1)(x+4)=0 smallerX- largerX-

Vilka [71]

Answer:

Two solutions were found :

x = -4

x = 1/2 = 0.500

Step-by-step explanation:

Step 1 :

Equation at the end of step 1 :

(2x - 1) • (x + 4) = 0

Step 2 :

Theory - Roots of a product :

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When a product of two or more terms equals zero, then at least one of the terms must be zero.

We shall now solve each term = 0 separately

In other words, we are going to solve as many equations as there are terms in the product

Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

2.2 Solve : 2x-1 = 0

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2x = 1

Divide both sides of the equation by 2:

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Solving a Single Variable Equation :

2.3 Solve : x+4 = 0

Subtract 4 from both sides of the equation :

x = -4

Two solutions were found :

x = -4

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Processing ends successfully

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3 years ago

Read 2 more answers

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kogti [31]

Answer:

85.5 feet tall

Step-by-step explanation:

2.5(33)+3

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3 years ago