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egoroff_w [7]
3 years ago
7

What is the y-value when x equals - 12?

Mathematics
1 answer:
kirill115 [55]3 years ago
7 0

Answer:

I think the answer is -140

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Will give brainliest please help ASAP
Snezhnost [94]

Answer:

D

Step-by-step explanation:

y>-3x+1                                 Negative slope

y<u><</u>x+2                                   Positive slope

< or > have dotted line

<u><</u> or <u>></u> have a solid line

> or <u>></u> means solutions are above the line

< or <u><</u> means solutions are below the line

The one with negative slope has a dotted line and solutions above it.

The one with positive slope has a solid line and solutions below it.

7 0
4 years ago
There is a loss of Rs 5 when a watch is sold at the discount of 10%. IF the watch is sold at the discount of 5%, there is profit
Colt1911 [192]
At disc of 10% there was 5rupees loss and at disc of 5 % dis there was 22.5 profit
so 5% *x= 22.5+5=27.5
x=27.5 *20
x=550
8 0
3 years ago
Which expression is shown on the number line?
notsponge [240]

Answer: i think its e

Step-by-step explanation:......

7 0
3 years ago
Read 2 more answers
An artist used silver wire to make a square that has a perimeter of 40 inches. She then used copper wire to make the largest cir
JulijaS [17]

The area of the copper circle A= 69.08 inches^{2}.

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

Given data,

Perimeter of the Square =40 inches.

Let us find the measurement of one side.

The formula for perimeter of a square is 4a.

where a is length of one side of a square.

We know that perimeter of the square is 40.

∴ 4a=40.

a=10 inches.

Imagine that moving one side of the square into the circle.

You can observe that length of one side of square is the diameter of the circle.

∴Diameter of the circle =10 inches.

⇒ Radius of the circle r= 5 inches.

Area of the circle A= πr^{2}.

A= 3.14×5×5.

Area of the circle A= 69.08 inches^{2}.

7 0
4 years ago
For the given functions, (a) express dw/dt as a function of t, both by using the chain rule and by expressing w in terms of t an
ch4aika [34]

By the chain rule,

\dfrac{\mathrm dw}{\mathrm dt}=\dfrac{\partial w}{\partial x}\dfrac{\mathrm dx}{\mathrm dt}+\dfrac{\partial w}{\partial y}\dfrac{\mathrm dy}{\mathrm dt}+\dfrac{\partial w}{\partial z}\dfrac{\mathrm dz}{\mathrm dt}

We have

w=7ye^x-\ln z\implies\begin{cases}\dfrac{\partial w}{\partial x}=7ye^x\\\\\dfrac{\partial w}{\partial y}=7e^x\\\\\dfrac{\partial w}{\partial z}=-\dfrac1z\end{cases}

and

\begin{cases}x=\ln(t^2+1)\\y=\tan^{-1}t\\z=e^t\end{cases}\implies\begin{cases}\dfrac{\mathrm dx}{\mathrm dt}=\dfrac{2t}{t^2+1}\\\\\dfrac{\mathrm dy}{\mathrm dt}=\dfrac1{t^2+1}\\\\\dfrac{\mathrm dz}{\mathrm dt}=e^t\end{cases}

Putting everything together, we get

\dfrac{\mathrm dw}{\mathrm dt}=\dfrac{14ye^xt}{t^2+1}+\dfrac{7e^x}{t^2+1}-\dfrac{e^t}z

x=\ln(t^2+1), so e^x=e^{\ln(t^2+1)}=t^2+1, and z=e^t, so \frac{e^t}z=1.

\dfrac{\mathrm dw}{\mathrm dt}=14yt+7-1

\dfrac{\mathrm dw}{\mathrm dt}=14t\tan^{-1}t+6

Then when t=1, the derivative has a value of \frac{7\pi}2+6.

6 0
3 years ago
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