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sergeinik [125]

3 years ago

8

The price tag shows the regular price and the sale price for a new racing bike. How much money will Parker save if she pays the

sale price?

2 answers:

Dimas [21]3 years ago

7 0

The difference between the two should give you her savings.

stira [4]3 years ago

3 0

Answer:

432.04

Step-by-step explanation:

got it on edg 2020

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Suppose that c (x )equals 7 x cubed minus 70 x squared plus 13 comma 000 x is the cost of manufacturing x items. Find a producti

Leno4ka [110]

Answer:

<h3>A production level that will minimize the average cost of making x items is x=5.</h3>

Step-by-step explanation:

Given that

$c(x)=7x^3-70x^2+13,000x$

is the cost of manufacturing x items

<h3>To find a production level that will minimize the average cost of making x items:</h3>

The average cost per item is $f(x)=\frac{c(x)}{x}$

Now we get $f(x)= 7x^2-70x+13000$

<h3> f(x) is continuously differentiable for all x</h3>

Here x≥0 since it represents the number of items.,

Put x=0 in $7x^2-70x+13000$

For x=0 the average cost becomes 13000

$f(0)=7(0)^2-70(0)+13000$

$=13000$

<h3>∴ f(0)=13000</h3><h3>To find Local extrema :</h3>

Differentiating f(x) with respect to x

$f^{\prime} (x)=14x-70=0$

$14x=70$

$x=\frac{70}{14}$

<h3>∴ x=5 gives the minimum average cost .</h3><h3>At x=5 the average cost is </h3>

$f(5)=7(5)^2-70(5)+13000$

$=12825$

<h3>∴ f(5)=12825 which is smaller than for x=0 is 13000</h3><h3>∴ f(x) is decreasing between 0 and 5 and it is increasing after 5.</h3>

4 0

3 years ago

Read 2 more answers

Hey! please help i’ll give brainliest

Anika [276]

Answer:

occurred during the same period of time

Step-by-step explanation:

7 0

3 years ago

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-4x + y = 4<br> 2x + 2y =13

schepotkina [342]

Answer: What exactly are you asking??

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

Simplify sin Θ/√1-sin^2 Θ

dedylja [7]

If you're using the app, try seeing this answer through your browser: brainly.com/question/2862279

_______________

Simplify the trigonometric expression.

Call the expression E:

$\mathsf{E=\dfrac{sin\,\theta}{\sqrt{1-sin^2\,\theta}}\qquad\qquad(but~~1-sin^2\,\theta=cos^2\,\theta)}\\\\\\
\mathsf{E=\dfrac{sin\,\theta}{\sqrt{cos^2\,\theta}}}\\\\\\
\mathsf{E=\dfrac{sin\,\theta}{\left|cos\,\theta\right|}}}$

$\mathsf{E}=\left\{\!\begin{array}{rl}\mathsf{\dfrac{sin\,\theta}{cos\,\theta}\,,}&\mathsf{\quad if~~cos\,\theta>0}\\\\\mathsf{\dfrac{sin\,\theta}{-\,cos\,\theta}\,,}&\mathsf{\quad if~~cos\,\theta$

So basically E is equivalent to $\pm\,\mathsf{tan\,\theta},$ where the sign depends on which quadrant $\theta$ lies. Shortly,

$\mathsf{\dfrac{sin\,\theta}{\sqrt{1-sin^2\,\theta}}}=\left\{\!
\begin{array}{rl}
\mathsf{tan\,\theta,}&\mathsf{\quad if~\theta~lies~either~in~the~1^{st}~or~the~4^{th}~quadrant}\\\\
\mathsf{-\,tan\,\theta,}&\mathsf{\quad if~\theta~lies~either~in~the~2^{nd}~or~the~3^{rd}~quadrant}
\end{array}$

I hope this helps. =)

Tags: <em>simplify trigonometric trig expression sine cosine tangent sin cos tan absolute value modulus trigonometry</em>

4 0

4 years ago

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The ratio of the number of red beads to the number of green beads to the number of blue beads is 2 : 3 : 7. There are 150 more b

liubo4ka [24]

R = red beads
G = green beads
B = blue beads

Given:
R/2 = G/3 = B/7
B = R + 150

How many reds?
R/2 = (R+150)/7
7*R/2 = R + 150
7*R = 2*R + 300
5*R = 300
R = 60

How many blue?
B = R + 150
B = 210

How many green?
G/3 = R/2
G/3 = 60/2
G/3 = 30
G = 90

How many total?
Total = R+G+B
Total = 60+90+210
Total = 360

6 0

3 years ago