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2 years ago

Please help and thank you

Mathematics

1 answer:

Katyanochek1 [597]2 years ago

4 0

Answer:

Step-by-step explanation:

Because in this equation in bracket -2 always go on right if there is positive 2 than it goes left.

And 3 goes up because it is positive. in negative it goes down

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Ex 2.6

Anna007 [38]

$y=3x^4 -4x^3 -12x^2 +1\\
y'=12x^3-12x^2-24x\\\\
12x^3-12x^2-24x=0\\
12x(x^2-x-2)=0\\
12x(x^2+x-2x-2)=0\\
12x(x(x+1)-2(x+1))=0\\
12x(x-2)(x+1)=0\\
x=0 \vee x=2 \vee x=-1\\\\
\forall{x\in(-\infty,-1)\cup(0,2)}\ y'$
$y(-1)=3\cdot(-1)^4-4\cdot(-1)^3-12\cdot(-1)^2+1=3+4-12+1=-4=\\
=y_{min}$

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2 years ago

80 into a ratio of 3:2

mixas84 [53]

3+2 = 5 80/5 =16 16 x 3 = 48 16 x 2 = 32 Answer= 48:32 I think this is right

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2 years ago

Read 2 more answers

Mr. Ray wanted to measure the height of a light post. He placed a mirror on the ground 32 feet from the light post, then walked

ryzh [129]

Answer:

Option (2) is the answer.

Step-by-step explanation:

From the figure attached,

AB represents the length of Mr. Ray, ED represents the light post and the mirror was placed at point C.

Here AB = d = 6 feet

CD = w = 32 feet

BC = f = 9 feet

Since both the triangles ABC and EDC are similar, their corresponding sides will be in the same ratio.

$\frac{AB}{DE}=\frac{BC}{CD}$

$\frac{6}{h}=\frac{9}{32}$

h = $\frac{6\times 32}{9}$

h = 21.33 feet

h ≈ 21.3 feet

Therefore, height of the light post is 21.3 feet.

Option (2) is the answer.

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2 years ago

I’m so confused please help , this is 100 points

sesenic [268]

Answer:

m`1 = 43` 2,3

m<2 1/12*

and m <3 = 1,3/2

Step-by-step explanation:

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2 years ago

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If you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?2

aivan3 [116]

The second equation because they all have a common factor of 3. You can get x by itself. However, with the first one, you'll end up with fractions instead.

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2 years ago