When trying to figure the value of old $20 bills its important to at least understand some basic concepts. Before you sell your old currency, whether it’s to us or someone else, you want to educate yourself so you don’t get ripped off when selling your bills. It’s easy to get cheated, that’s why we put together this guide so the public can become more educated.

7 0

3 years ago

A grocery store offers a cheese sampler that includes a pepper cheddar cheese that costs $15 per kilogram and Pennsylvania Jack

lawyer [7]

Answer: The quantity of pepper cheddar cheese required = 2.5 kilograms

The quantity of Pennsylvania Jack required = 4.5 kilograms

Step-by-step explanation:

Let x = Quantity of pepper cheddar cheese

y= Quantity of Pennsylvania Jack

As per given , we have the following system of equations:

$x+y=7----------(1)\\\\ 15x+8y= 7\times10.50\\\\ 15x+8y=73.5------------(2)$

Multiply 8 to equation(1) , we get

$8x+8y=56---------(3)$

Eliminate (3) from (2) , we get

$7x=17.5\\\\ x=\dfrac{17.5}{7}=2.5$

Put value of x in (1) , we get

$2.5+y=7\\\\ y=7-2.5=4.5$

Hence, the quantity of pepper cheddar cheese required = 2.5 kilograms

The quantity of Pennsylvania Jack required = 4.5 kilograms

3 0

3 years ago

Two trucks are traveling in the same direction, one going twice as fast as the other. At the end of 6 hours they are 204 miles a

TEA [102]

Answer:

34 mph and 68 mph respectively

Step-by-step explanation:

Step one:

given data

let the speed of the first truck be x mph

and the speed of the second truck be 2x mph

time taken = 6 hours

total distance = 204 miles

Step two:

from speed = distance/time

distance= speed*time

hence

2x*6-6x= 204

12x+6x= 204

6x= 204

divide both side by 6

x= 204/6

x=34 mph

The second truck was moving at

=2x

=2*34

=68 mph

7 0

3 years ago

Anyone, please help. I’m a dimwit at math!

diamong [38]

Angle measurement DEF=107 degrees
You must first find angle F- since it is against a flat line, we know 180=F+135. Subtract 135 from each side and we find F is 45 degrees.
Then, since a triangle’s angles must always equal 180 degrees, we subtract angles D and F from 180 to get 107 degrees.

8 0

4 years ago