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3 years ago

2a+3a what matche sthis equation

Mathematics

2 answers:

aniked [119]3 years ago

5 0

Answer:

Step-by-step explanation:

Margarita [4]3 years ago

5 0

Answer:

5a.

Step-by-step explanation:

2a + 3a

= (2 + 3)a

= 5a.

Hope this helps!

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Which of the following correctly sets up the synthetic division for x3 − 4x2 − 3 divided by x + 1?

Scrat [10]

Answer:

x3 − 4x2 − 3 divided by x + 1 = x4−4x3+x−3 over x

------------

Step-by-step explanation:

6 0

3 years ago

HALP HALP HALP HALP HALP

PolarNik [594]

Answer:

the answer is option (c)

7 0

3 years ago

Solve the equation, if possible. (If all real numbers are solutions, enter REALS. If there is no solution, enter NO SOLUTION.)

Masteriza [31]

Answer:

The equation $x\left(x\:+\:6\right)\:=\:\left(x\:+\:3\right)^2$ has NO SOLUTION, and is called contradiction.

Step-by-step explanation:

Given the equation

$x\left(x\:+\:6\right)\:=\:\left(x\:+\:3\right)^2$

$\mathrm{Expand\:}x\left(x+6\right):\quad x^2+6x$

$\mathrm{Expand\:}\left(x+3\right)^2:\quad x^2+6x+9$

$x^2+6x=x^2+6x+9$

$\mathrm{Subtract\:}x^2+6x\mathrm{\:from\:both\:sides}$

$x^2+6x-\left(x^2+6x\right)=x^2+6x+9-\left(x^2+6x\right)$

$\mathrm{Simplify}$

$0=9$

$\mathrm{The\:sides\:are\:not\:equal}$

Thus, there is NO SOLUTION.

We know that an equation that has no solution, such as $x = x + 2$ , is called a contradiction.

Therefore, the equation $x\left(x\:+\:6\right)\:=\:\left(x\:+\:3\right)^2$ has NO SOLUTION, and is called contradiction.

6 0

3 years ago

3. Suppose m = 2 + 6i, and |m+n|=3√10, where n is a complex number.

Anestetic [448]

Answer:

Step-by-step explanation:

Suppose m = 2 + 6i, and |m+n|=3√10,

The modulus sign means m+n can either be positive or negative as shown.

If it is positive:.2+6i+n = 3√10

n = 3√10-(2+6i)

n = 3√10-2-18√10i

n = (-2+3√10)+√10i

b) Example of the complex number is given as (-2+3√10)+√10i. This is a complex number because it contains the real part and the imaginary part.

7 0

3 years ago

Please help!!!! I need to pass this class!!

Liono4ka [1.6K]

Answer:

x is approximately 69.39 degrees.

Step-by-step explanation:

To find x in this triangle, we can use the sin rule:

$\frac{a}{sin(A)} =\frac{b}{sin(B)}$

The corresponding angle for each length is the one that lies directly opposite it. E.g. if 3.5 was our length 'a', then 55 degrees would be our angle A.

So let's take 3.5 and 55degrees as our length and Angle A, and 4 and x degrees as our length and angle B as we are trying to solve for x.

This would give us the following equation:

$\frac{3.5}{sin(55)} =\frac{4}{sin(x)} \\$

Since we are solving for an angle, it will be easier to rearrange the equation if we have it as the numerator, so we can flip the fractions to make it easier. It will still be equal as we are looking for the ratio.

$\frac{sin(55)}{3.5} =\frac{sin(x)}{4} \\$

From here let's isolate the sin(x) by multiplying by 4 and solving the values we have so far:

$\frac{4 sin(55)}{3.5} =sin(x)\\\frac{3.2766}{3.5} =sin(x)\\0.936=sin(x)$

Now the final step is to use inverse sin to cancel the sin so we just have x:

$sin^{-1} 0.936=x\\x=69.39$

x is approximately 69.39 degrees.

Hope this helped!

4 0

3 years ago