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3 years ago

Triangle ABC is the pre-image and triangle DFE is the image.

Mathematics

1 answer:

anzhelika [568]3 years ago

6 0

Answer:

Scale factor = ½

Step-by-step explanation:

The original image is the preimage = ∆ACB

The new image is the image = ∆DFE

The scale of factor of dilation = image/preimage = DF/AC

DF = 6 cm (given)

AC = 12 cm (given)

Plug in the values into the equation to find the scale factor of dilation:

Scale factor = 6/12

Scale factor = ½

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Answer:

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Step-by-step explanation:

Since x measures time, in days, start your x-axis at (0,0).

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3 years ago

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3 years ago

Help with number 50 please. Thanks.

Blizzard [7]

Answer:

$d = 7 + 3\sqrt{3}$ and

$d = 7 - 3\sqrt{3}$

Step-by-step explanation:

To solve the equation, $d^2 - 14d - 22 = 0$ , using the quadratic formula,

Recall: quadratic formula = $\frac{-b ± \sqrt{b^2 - 4ac}}{2a}$

Where,

a = 1

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c = 22

Plug in your values into the formula and solve:

$\frac{-(-14) ± \sqrt{(-14)^2 - 4(1)(22)}}{2(1)}$

$\frac{14 ± \sqrt{196 - 88}}{2}$

$\frac{14 ± \sqrt{108}}{2}$

$d = \frac{14 + \sqrt{108}}{2}$

$d = \frac{14 + 6\sqrt{3}}{2}$

$d = (\frac{2(7 + 3\sqrt{3})}{2}$

$d = 7 + 3\sqrt{3}$

And

$d = \frac{14 - \sqrt{108}}{2}$

$d = \frac{14 - 6\sqrt{3}}{2}$

$d = (\frac{2(7 - 3\sqrt{3})}{2}$

$d = 7 - 3\sqrt{3}$

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3 years ago

Solve the quadratic by factoring 2X²-2X-12=0

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3 years ago

Read 2 more answers

Can someone please help <br>and explain :))

grandymaker [24]

Use photo math it’s an app it will give u the answer u need

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3 years ago