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3 years ago

CAN I PLEASE HAVE SOME HELP

Mathematics

1 answer:

sp2606 [1]3 years ago

7 0

Answer:

I am pretty sure it's A and I am very sorry if I'm wrong

Step-by-step explanation:

The way I would think about this question is this: because Jordan only wants to work a maximum of 40 hours, he can work 40 hours or less. Which is described as an equation in the top equation of letter A. And because he also wants to make $250 or more, the bottom equation in A would work as well.

I hope that makes sense! Please ask me in the comments if you want more explanation on it

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What is the derivative of f(x)= 3cos^2 (x)

Igoryamba

$\large\begin{array}{l} \textsf{Finding the derivative of}\\\\ \mathsf{f(x)=3\,cos^2\,x} \end{array}$

$\large\begin{array}{l} \textsf{You can differentiate it using the chain rule}\\\\ \mathsf{f'(x)=(3\,cos^2\,x)'}\\\\ \mathsf{f'(x)=3\,(cos^2\,x)'}\\\\ \mathsf{f'(x)=3\cdot 2\,(cos\,x)^{2-1}\cdot (cos\,x)'}\\\\ \mathsf{f'(x)=6\,(cos\,x)^1\cdot (-sin\,x)}\\\\ \boxed{\begin{array}{c}\mathsf{f'(x)=-6\,cos\,x\,sin\,x} \end{array}}\qquad\checkmark \end{array}$

<span>If you're having problems understanding this answer, try seeing it through your browser: brainly.com/question/2141400</span>

$\large\textsf{I hope it helps.}$

Tags: <em>derivative trig function cosine cos power chain rule differential calculus</em>

3 0

3 years ago

Read 2 more answers

morty needs $480 to buy a Tv and stereo system for his room. he received $60 in cash for birthday presents. He plans to save $ 3

IgorLugansk [536]

Hey! So this is pretty straightforward. You're given all the information already and now you just have to do some calculations.

60 + 30w = 480

You can start by subtracting 60 from both sides

30w = 420

Now you need to get w by itself so you have to divide both sides by 30 and you will end up getting

w = 14!

It will take him 14 weeks to save up

6 0

3 years ago

Read 2 more answers

What is the constant rate of change?

anygoal [31]

Answer: The constant rate of change is 8.

6 0

3 years ago

Arianna has $0.90 worth of nickels and dimes. She has 4 times as many nickels as

Tanya [424]

Answer:

X=3

Step-by-step explanation:

0.05(4x) + 0.1x = 0.90

0.2x + 0.1x = 0.90

0.3x = 0.90

x = 3

8 0

3 years ago

3. Maria is a veterinarian. She wants to know how the weight of a puppy is related to its length. To find out, Maria randomly se

sweet [91]

Answer:

Part A. I chose points (7,1.3) and (48,9.8)

Part B. a. Positive correlation; b. y = 0.21x - 0.2

Step-by-step explanation:

Part A.

I chose the first and last points on the line — (7 in, 1.3 lb) and (48 in, 9.8 lb).

That put three points on the line, three above it, and four below.

Part B

a. Type of correlation

There is a positive correlation between the length of a puppy and its weight.

You would expect a longer dog to be bigger and weigh more than a shorter dog.

b. The equation for the line of best fit

The slope-intercept equation for a straight line is

y = mx + b

where m is the slope of the line and b is the y-intercept.

The line passes through the points (7,1.3) and (48, 9.8).

(i) Calculate the slope of the line

\begin{array}{rcl}

$m & = & \dfrac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\ & = & \dfrac{9.8 - 1.3}{48-9}\\\\& = & \dfrac{8.5}{41}\\\\& = & \textbf{0.21 lb/in}\\\\\end{array}$

The slope of the line is 0.21 lb/in.

(ii) Locate the y-intercept

Put the slope and the coordinates of one point into the slope-intercept formula.

$\begin{array}{rcl}y & = & mx + b\\1.3 & = & 0.21\times7 + b\\1.3 & = & 1.47 + b\\b & = & -0.2\\\end{array}$

The y-intercept is at (0,-0.2)

(iii) Write the equation for the line

y = 0.21x - 0.2

5 0

3 years ago