Ask question

Ask question

All categories

Ilia_Sergeevich [38]

4 years ago

13

I got this paper and it had different graphing calculator questions and on one it says check your answer and I don't know what t

hat means?

1 answer:

dmitriy555 [2]4 years ago

7 0

Answer:

The "check your answer" probably means check your answer by graphing.

Step-by-step explanation:

You might be interested in

Solve x^2-1=0 using quadratic formula

Lady_Fox [76]

I am thinking that my solution is correct

3 0

4 years ago

Read 2 more answers

The top and bottom margins of a poster are each 12 cm and the side margins are each 8 cm. The area of printed material on the po

grin007 [14]

Answer:

Dimensions of printed poster are

length is 32 cm

width is 48 cm

Step-by-step explanation:

Let's assume

length of printed poster is x cm

width of printed poster is y cm

now, we can find area of printed poster

so, area of printed poster is

$=xy$

we are given that area as 1536

so, we can set it to 1536

$xy=1536$

now, we can solve for y

$y=\frac{1536}{x}$

now, we are given

The top and bottom margins of a poster are each 12 cm and the side margins are each 8 cm

so, total area of poster is

$A=(8+x+8)\times (12+y+12)$

$A=(x+16)\times (y+24)$

now, we can plug back y

$A=(x+16)\times (\frac{1536}{x}+24)$

now, we have to minimize A

so, we will find derivative

$A'=\frac{d}{dx}\left(\left(x+16\right)\left(\frac{1536}{x}+24\right)\right)$

we can use product rule

$A'=\frac{d}{dx}\left(x+16\right)\left(\frac{1536}{x}+24\right)+\frac{d}{dx}\left(\frac{1536}{x}+24\right)\left(x+16\right)$

$=\frac{d}{dx}\left(x+16\right)\left(\frac{1536}{x}+24\right)+\frac{d}{dx}\left(\frac{1536}{x}+24\right)\left(x+16\right)$

now, we can simplify it

$A'=-\frac{24576}{x^2}+24$

now, we can set it to 0

and then we can solve for x

$A'=-\frac{24576}{x^2}+24=0$

$-\frac{24576}{x^2}x^2+24x^2=0\cdot \:x^2$

$-24576+24x^2=0$

$x=32,\:x=-32$

Since, x is dimension

and dimension can never be negative

so, we will only consider positive value

$x=32$

now, we can solve for y

$y=\frac{1536}{32}$

$y=48$

so, dimensions of printed poster are

length is 32 cm

width is 48 cm

5 0

3 years ago

X+X+14=90 what are the steps to sloving this equations

SVETLANKA909090 [29]

Subtract 14 from 90 then find out what adds up to get to 76 then put down what you want that is how I was told how to do

6 0

4 years ago

Read 2 more answers

Sam wants to leave an 18% tip for his dinner. The bill is for $23.50.

Aneli [31]

The second one, x=(0.18)(23.5)

4 0

3 years ago

Read 2 more answers

in class of 24 students sold over 150 raffle tickets each, and the rest of the class sold about 60 raffle tickets each. the clas

Murrr4er [49]

They reached their goal because 150x24= 3,600 and that is much more than the class goal of 2,000 plus the 60 extra tickets the rest of the class sold.

7 0

3 years ago

Read 2 more answers