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3 years ago

Evaluate f(8) when f (x) = 3x-4

Mathematics

2 answers:

OLEGan [10]3 years ago

7 0

Answer:

you'll just need to insert the 8 into the equation on the right f(x) = 20

Gnoma [55]3 years ago

4 0

Just replace x by 8 so the answer is 3(8)-4=20

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Simplify the following expression: <br> 3x^4y^2 <br> xy^2

Vaselesa [24]

What is the number n ^???

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3 years ago

The smaller triangle is a pre-image of the bigger triangle the center dilation is (1,-1) What is the scale factor used to create

kozerog [31]

Answer:

B. -4

Step-by-step explanation:

When dilation is not about the origin then in order to find the scalar factor, we need to find the ratio of the corresponding lengths.

2 Vertices of smaller triangle (Pre-image):

$(1,-1),(1,1)$

Length of side:

$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$\sqrt{((1-1)^2+1-(-1))^2}=\sqrt{0+(1+1)^2} = \sqrt{4} =\pm2$

Since distance is always positive so its 2 units.

2 Vertices of bigger triangle(Image):

$(1,-1),(1,-9)$

Length of side:

$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

$\sqrt{((1-1)^2+(-9-(-1))^2}=\sqrt{0+(-9+1)^2} = \sqrt{(-8)^2}= \sqrt{64} =\pm8$

Since distance is always positive so its 8 units.

For the given figure we see that the dilated image is rotated 180° from the original position. Thus, for such dilation the scalar factor is taken negative.

Thus the scalar factor can be calculated as:

Scalar factor = $-\frac{length\ of \ image}{length\ of\ pre-image} =-\frac{8}{2} = -4$

Scalar factor =-4

5 0

3 years ago

Read 2 more answers

What is the probability of rolling a number greater than or equal to 8 with the sum of two dice given that at least one of the d

agasfer [191]

I get that the probability is of 5/36, because there are only 5 (6,2 ;6,3 ;6,4 ;6,5 ;6,6) and there are 36 combinations
I Hope this help you

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3 years ago

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NikAS [45]

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4 years ago

The number of employees at a company is decreasing by 9.5% yearly. Currently there are 12,640 employees working at the company.

pychu [463]

Answer:

12546

Step-by-step explanation:

9.5% = 0.95 = 95

12,640 - 95 = 12546

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3 years ago