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Sunny_sXe [5.5K]

3 years ago

14

Please help me!! I don't get this at all

1 answer:

Furkat [3]3 years ago

6 0

Answer:

i think it's 1/2 (a-8)

Step-by-step explanation:

so if u take 1/2 (a-8) and do distributive property ull get 1/2a and the 1/2 times 8=4 so u get 1/2a-4 I'm sorry if im wrong but this is what makes sense to me

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use the definition of the derivative to find the derivatives of the function with respect to x. Please help with numbers 3 and 4

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6 0

4 years ago

suppose that you are headed toward a plateau 80 meters high. if the angle of elevation to the top of the plateau is 35 degree, h

slega [8]

We are 114.28 m from the base of the plateau .

<u>Step-by-step explanation:</u>

Here we have , suppose that you are headed toward a plateau 80 meters high. if the angle of elevation to the top of the plateau is 35 degree, WE need to find that how far are you from the base of the plateau . If we see in question , it's clearly a question from application of trigonometry :

We have ,

$Perpendicular = 80 m$

$Base = x$

$Angle = 35 = \alpha$ ( between base & hypotenuse )

It's a right angled triangle , So

$tan\alpha = \frac{Perpendicular}{base}$

⇒ $tan\alpha = \frac{Perpendicular}{base}$

⇒ $tan35 = \frac{80}{x}$

⇒ $x = \frac{80}{tan35}$

$tan35 = 0.7$

⇒ $x = \frac{80}{0.7}$

⇒ $x = 114.28m$

Therefore, We are 114.28 m from the base of the plateau .

3 0

3 years ago

What word describes the equal shares of the shape

marusya05 [52]

Parralel or most likely symmetrical

8 0

3 years ago

Solve the system of equations algebraically.

nordsb [41]

Answer: D

Step-by-step explanation:

$4x-3y=8\\5x-4y=5$

Let's take one of the equations and solve for a variable to use the substitution method.

$5x-4y=5\\5x=5+4y\\x=\frac{5+4y}{5}$

Now replace this in the first equation.

$4x-3y=8\\4(\frac{5+4y}{5})-3y=8\\\frac{20+16y}{5}-3y=8$

Separate the terms.

$\frac{20}{5}+\frac{16y}{5}-3y=8$

Solve 20/5

$4+\frac{16y}{5}-3y=8$

Subtract 4 from both sides to isolate y.

$4-4+\frac{16y}{5}-3y=8-4$

$\frac{16}{5}y-3y=4$

Solve the difference.

$\frac{16-(3)(5)}{5}y=4\\$

$\frac{16-15}{5} y=4$

$\frac{1}{5}y=4$

Multiply by the reciprocal or the inverted fraction that is next to y to isolate it.

$(\frac{5}{1} )(\frac{1}{5})y=4(\frac{5}{1})$

$y=20$

Now, in order to find x, replace y in any of the two equations.

$5x-4y=5\\5x-4(20)=5\\5x-80=5\\5x=5+80\\5x=85\\x=\frac{85}{5}\\x=17$

7 0

3 years ago

2. The length of a rectangle is 4 meters shorter than its width

Anton [14]

Answer:

I would say A

Step-by-step explanation:

8 0

3 years ago