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1 year ago

Solve for x. -6x+6=-4x-2

Mathematics

1 answer:

Tcecarenko [31]1 year ago

4 0

The answer would be x = 4. Hope this helps!

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Brianna has x nickels and y pennies. She has no less than 20 coins worth no more

Bond [772]

Answer:

$y \ge 20 - x$

$y \le 80 -5x$

$(x,y) = (15,5)$

Step-by-step explanation:

Given

$Nickels = x$

$Pennies = y$

$Amount = \$0.80$ maximum

$Coins = 20$ minimum

Required

Solve graphically

First, we need to determine the inequalities of the system.

For number of coins, we have:

$x\ +\ y\ge 20$ because the number of coins is not less than 20

For the worth of coins, we have:

$0.05x\ +\ 0.01y\ \le0.80$ because the worth of coins is not more than 0.80

So, we have the following equations:

$x\ +\ y\ge 20$

$0.05x\ +\ 0.01y\ \le0.80$

Make y the subject in both cases:

$y \ge 20 - x$

$0.01y \le 0.80 - 0.05x$

Divide through by 0.01

$\frac{0.01y}{0.01} \le \frac{0.80}{0.01} -\frac{ 0.05x}{0.01}$

$y \le \frac{0.80}{0.01} -\frac{ 0.05x}{0.01}$

$y \le 80 -5x$

The resulting inequalities are:

$y \ge 20 - x$

$y \le 80 -5x$

The two inequalities are plotted on the graph as shown in the attachment.

$y \ge 20 - x$ --- Blue

$y \ge 80 -5x$ --- Green

Point A on the attachment are possible solutions

At A:

$(x,y) = (15,5)$

4 0

2 years ago

Summative practice

UkoKoshka [18]

Answer:

the answer is written in the picture.

3 0

3 years ago

What is the value of Y ??

lilavasa [31]

Answer:

but where is the diagram

Step-by-step explanation:

????????

4 0

2 years ago

Read 2 more answers

For parallelogram LMNO , if m

natali 33 [55]

I'm just going to assume you're given the volume and LMNO are sides of the parallelogram

Area = LMNO

M=?

M= $\frac{area}{LNO}$

5 0

2 years ago

Can someone please answer. There is a picture. There is only one question. Thank you so much

Sloan [31]

So than you check this graph so you see that the radius has a length of 4 units
from what result that thet x^2 +y^2 =4

so the choice 3rd is right sure

3 0

3 years ago