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harkovskaia [24]

3 years ago

8

Barbara worked 30 hours last week. She

1 answer:

schepotkina [342]3 years ago

4 0

Answer:approximately a little more than 32 hours

Step-by-step explanation:

422/30 = 455/x

422x = 30*455

422x = 13,650

x=32.345971

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Simplify the expression:<br><br> 3x (4x-6)<br> —————<br> 2x(3x)

Marina86 [1]

Answer:

$=\frac{2x-3}{x}$

Step-by-step explanation:

$=6x^2\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=\frac{3x\left(4x-6\right)}{2x\cdot \:3x}\\2x\cdot \:3x=6x^2\\=\frac{3x\left(4x-6\right)}{6x^2}\\\mathrm{Cancel\:}\frac{3x\left(4x-6\right)}{6x^2}:\quad \frac{4x-6}{2x}\\=\frac{4x-6}{2x}\\\mathrm{Factor}\:4x-6:\quad 2\left(2x-3\right)\\=\frac{2\left(2x-3\right)}{2x}\\\mathrm{Divide\:the\:numbers:}\:\frac{2}{2}=1\\=\frac{2x-3}{x}$

7 0

3 years ago

Find the greatest common factor of 21 and 33

lions [1.4K]

Answer:

As you can see when you list out the factors of each number, 3 is the greatest number that 21 and 33 divides into.

Step-by-step explanation:

As you can see when you list out the factors of each number, 3 is the greatest number that 21 and 33 divides into.

5 0

2 years ago

Read 2 more answers

Solve in degrees. 0 < θ < 360<br> 1. tan θ = 3.5134

Temka [501]

Answer:

Therefore,

$\theta=74.11\°\ or\ \theta=254.11\°$

Step-by-step explanation:

Given:

0° < θ < 360°

tan θ = 3.5134

To Find:

θ in degrees = ?

Solution:

0° < θ < 360° .............Given

Means ' θ ' is between 0° and 360°

$\tan \theta=3.5134$ .............Given

Therefore,

$\theta=\tan^{-1} (3.5134)$

Also,

$\tan (180+\theta)=\tan \theta$

So ' θ ' will have Two values for tan θ =3.5134

$\therefore \theta=74.11\°\ or\ \theta=180+74.11=254.11\°$

Therefore,

$\theta=74.11\°\ or\ \theta=254.11\°$

5 0

3 years ago

Does this matrix have an inverse?why or why not ?

Ierofanga [76]

Answer:

C. No, because it's determinant is zero

Step-by-step explanation:

$A= \begin{bmatrix} 16 & - 4\\\\ 8 & - 2\end{bmatrix}$

$det(A) =\begin{vmatrix} 16 & - 4\\\\ 8 & - 2\end{vmatrix}$

$det(A) = 16\times (-2)-(-4)\times 8$

$det(A) = -32+32$

$det(A) = 0$

8 0

3 years ago

Need help on this problem

adell [148]

Answer:

The first choice is correct, because it is the only one that has -2 as it's x-coordinate. :)

Mark Brainliest only if I'm helpful.

6 0

3 years ago

Read 2 more answers