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2 years ago

X2 -2x -24=0 is equivalent to Answer(S):

Mathematics

1 answer:

sergey [27]2 years ago

4 0

Answer:

x= 6, -4

Step-by-step explanation:

x^2 - 2x - 24 = 0

(x-6) (x+4) = 0

x = 6, x= -4

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Which polynomial represents the difference below 5x^2+9x+3-(x^2-3x)?

neonofarm [45]

$5x^2+9x+3-(x^2-3x)=5x^2+9x+3-x^2+3x\\\\=(5x^2-x^2)+(9x+3x)+3=4x^2+12x+3$

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4 years ago

A palm tree is supported by two guy wires as shown in the diagram below. Which trig expression can be used to find the height on

Volgvan

Answer:

D. $tan(30^\circ+45^\circ)$ is the correct answer.

Step-by-step explanation:

The given situation can be represented as a figure attached in answer area.

B is the base of tree.

C is the base of wires.

A and D are the end of 2 wires supporting the tree.

$\angle DCB =45^\circ\\\angle ACB =75^\circ\\$

Here, we need to find the Height of the tree which is represented the by side AB.

and we are given that bases of wires and tree base are at a distance 4 ft.

i.e. side BC = 4 ft

If we look at the $\triangle ABC$ , we are given the base BC and the $\angle ACB$ , and the perpendicular is to be find out.

We can use trigonometric identity:

$tan\theta =\dfrac{Perpendicular}{Base}$

$tan 75^\circ = \dfrac{AB}{BC}\\\bold {tan (45+30)^\circ }= \dfrac{AB}{4}\\\Rightarrow AB = \bold {tan (45+30)^\circ } \times 4 = 14.93\ ft$

Hence, D. $tan(30^\circ+45^\circ)$ is the correct answer.

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3 years ago

Put in order from least to greatest: (I WILL GIVE BRAINLIEST)

Mariulka [41]

The third one is the correct order!!

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3 years ago

given the vector v has an initial point (-2,-6) and a terminal point of (1,2) write vector v as a linear combination of the stan

Anuta_ua [19.1K]

Answer:

v=3i+8j

Step-by-step explanation:

The given the vector v has an initial point (-2,-6) and a terminal point of (1,2).

To find the components of vector v, we subtract the terminal points from the initial point to obtain.

v=<1,2>-<-2,-6>

v=<1--2,2--6>

v=<1+2,2+6>

v=<3,8>

As a linear combination of the standard unit vectors.

v=3i+8j

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3 years ago

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ryzh [129]

Answer:

three

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A R A D

A D I S E

P Q R

A B C D

A B C D E

<em>There are three such pairs of letters. </em>

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3 years ago