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3 years ago

Find BD ( I need to find this answer quick )

Mathematics

1 answer:

Nataly_w [17]3 years ago

7 0

Answer:

2x-4+2

Step-by-step explanation:

The line of BC is 2x-4 as we can see below and than we just add 2 since it's the line between CD

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Please help me with this question i’ll mark you as brainliest

vlabodo [156]

Hey buddy
The d part is correct
Hope it helps :)

4 0

4 years ago

Read 2 more answers

Fill in the blank with the correct response. Given ∠1=∠2, find x.

dexar [7]

Answer:

x = 6

Step-by-step explanation:

Since, ∠1 ≅ ∠2

By angle bisector theorem,

$\frac{AB}{BD}=\frac{AC}{CD}$

By substituting the measures of each side in the given ratio of the sides,

$\frac{3}{x-4}=\frac{x}{4}$

12 = x(x - 4)

12 = x² - 4x

x² - 4x - 12 = 0

x² - 6x + 2x - 12 = 0

x( x - 6) + 2(x - 6) = 0

(x + 2)(x - 6) = 0

x = -2, 6

Since, measure of the sides can't be negative, x can not be negative.

Therefore, x = 6 will be the answer.

6 0

3 years ago

Find the exact length of the curve. x = 1 + 6t2, y = 4 + 4t3, 0 ≤ t ≤ 3

vovangra [49]

$x=1+6t^2\implies\dfrac{\mathrm dx}{\mathrm dt}=12t$

$y=4+4t^3\implies\dfrac{\mathrm dy}{\mathrm dt}=12t^2$

The length of the curve $C$ is given by

$\displaystyle\int_C\mathrm ds=\int_0^3\sqrt{\left(\frac{\mathrm dx}{\mathrm dt}\right)^2+\left(\dfrac{\mathrm dy}{\mathrm dt}\right)^2}\,\mathrm dt$

$=\displaystyle\int_0^3\sqrt{144t^2+144t^4}\,\mathrm dt$

$=\displaystyle12\int_0^3t\sqrt{1+t^2}\,\mathrm dt$

$=\displaystyle6\int_0^3 2t\sqrt{1+t^2}\,\mathrm dt$

$=\displaystyle6\int_0^3\sqrt{1+t^2}\,\mathrm d(1+t^2)$

$=6\cdot\dfrac23(1+t^2)^{3/2}\bigg|_0^3$

$=4(10^{3/2}-1)$

$=40\sqrt{10}-4$

8 0

3 years ago

This is so confusing, pls help!!

liq [111]

Answer:

2 1/4 cubic units is the answer

3 0

3 years ago

Sally begins hiking at an elevation of 224 ft then she descends 131 ft and climbs 67 feet higher than her current position she t

Temka [501]

Answer:

Sally ends at 3 feet below zero point.

Step-by-step explanation:

Let be $h$ the height with respect to zero point, which is represented by the following sum:

$h = \Sigma_{i=1}^{n} h_{i}$

Where:

$h_{i}$ - i-th travelled height, measured in feet.

In addition, positive sign means ascension, whereas negative sign means descent.

The statement can be translated into the following mathematical identity:

$h = h_{1}+h_{2}+h_{3}+h_{4}$

$h = 224\,ft+(-131\,ft)+67\,ft -163\,ft$

$h = -3\,ft$

Sally ends at 3 feet below zero point.

3 0

3 years ago