math (mixture problems) homework help?

can you tell me how to solve this (I have like 7 of each of these problems)?

QUESTION #1

The first step in solving any problem like this is to write out the appropriate equation. In this example, because we’re talking about dimes and quarters, we will use the variables:
d= # of dimes
q= # of quarters

Because dimes are worth $0.10, we can multiply the number of dimes we have (d) by 0.10 to get the total cash value of our dimes. We will do the same for quarters (q), except they’re worth $0.25 so we multiply by that instead.

0.10*d + 0.25*q = 19.30 <--- I added together our money from dimes and quarters and set it equal to 19.30 because that is the amount of money the question said we had.

d+q=94 <--- this one is an easier equation, adding the number of dimes and quarters must give us 94 because the question says there are 94 coins in all

Now we can do some math. Okay, if we rearrange our second formula, we can solve for q and then substitute it into our first equation.

q = 94 - d <--- I subtracted d from both sides, now let's substitute this into our original equation

0.10*d + 0.25*(94-d) = 19.30 <--- distribute the 0.25 to the parenthesis
.10d + 23.5 - .25d = 19.30 <--- combine like terms (both of the d's)
-0.15d + 23.5 = 19.30 <--- subtract 23.5 from both sides to isolate -0.15d
-0.15d = -4.2 <--- divide both sides by -0.15
d = 28

Now that we know we had 28 dimes, we can plug this into either of our original equations to solve for quarters. I will use the second equation because it's easier:

q = 94 - d <--- plug in 28 for d
q = 94 - 28
q = 66

ANSWERS:
28 dimes and 66 quarters

-----------------------------------------------

QUESTION #2

t + a = 1729
t - a = 1171

Okay, we can rearrange either formula, but I will use the second one:

t = 1171 + a (I added a to both sides)

Now we plug this into the other formula:

t + a = 1729 <--- substitute 1171 + a for t
1171 + a + a = 1729 <--- combine the a's
1171 +2a = 1729 <--- subtract 1171 from both sides to isolate 2a
2a = 558 <--- divide by 2 to solve for a
a = 279

Now we can plug 279 for a in either equation:
t = 1171 + a <--- sub 279 for a
t= 1171 + 279
t = 1450

ANSWER:
The antenna is 279 feet and the tower is 1450 feet

-----------------------------------------------

QUESTION #3

I am going to set this up for you, but I will let you try the third problem on your own. All you have to do is substitute one equation into the other like I did for the first two.

Rose's equation:
63 = 3(20 - 20*s) + 1(20 - 20*t) <--- let's distribute to both of our parenthesis
63 = 60 - 60s + 20 - 20t <--- combine the numbers without the variables (remember, you can't combine -60s with -20t because the variables are not the same)

63 = 80 - 60s - 20t

Manny's equation:
140 = 5(20 - 20*s) + 4(20 - 20*t) <--- let's distribute to both of our parenthesis
140 = 100 - 100s + 80 - 80t <--- combine the numbers without the variables (remember, you can't combine -100s with -80t because the variables are not the same)

140 = 180 - 100s - 80t

Now I did most of the work for you, you just need to finish setting up your equations and then set one of them up to substitute into the second one! Good luck!

Oh and don't forget you need two numbers for your answer s and t. Once you find the first one, just plug that number into one of your equations to solve for the value of your second variable.

Flying Around the CN Tower in Toronto in a Cessna 172

Wilson Electronics Sleek Cell Phone Signal Cradle Booster for All Cell Phones with Mini Magnet Mount Antenna – For Single User $129.99 Wilson Electronics 815226 Sleek Cell Phone Signal Cradle Booster is designed to work with all cell phones. The Sleek features a signal booster a cradle and a built-in port for battery charging. The Sleek amplifies signals both to and from the cell tower and improves your cell phone?s voice and data signal strength significantly….

Wilson Electronics Desktop Adjustable Gain Cell Phone Signal Booster for Home or Office – For Multiple Users $359.95 WILSON 801247 3-WATT DESKTOP CELLULAR AMPLIFIER…

Terk FM Only Stereo Antenna FM+ $7.14 The FM+ FM only Stereo Antenna Improves FM radio reception and is a great replacement antenna for ”T” wire stereo antenna….

Routines Regarding Radio Stations Enthusiasts

Novice radio stations or even pork is essentially a spare time activity exercise. Many thel activity moment is actually used on creating make contact with as well as getting interactions with individuals inside faraway locations and also through diverse civilizations. {Two-way} marketing and sales communications, determining {their whereabouts} and also train station, zoom, area and set could be the typical customized. This really is constantly accompanied by some other informal marketing communications. In the event the make contact with is good for any competition to produce {two-way} conversation together with as much areas or even pork stereo staff as you possibly can, this kind of all the details which is discussed.

DX-ing and also DX-peditions:

A beginner stereo operator’s primary pastime is actually {to get hold of} as much areas as you can coming from as numerous elements on the planet as you possibly can. DX represents Faraway Areas. The actual DX-ing typically is actually adopted using the QSO. (any {Queen} signal., observe beneath) meaning “a conversation”.

DX-peditions will vary within the perception they are outings arranged and designed exclusively when it comes to producing associates with a few unique or even uncommon areas and also locations. Some individuals journey long-distance simply {to get hold of} several unrepresented area or perhaps location.

{Rf} scanning devices obtainable these days make up the device associated with excellent used in these types of tries. Radio stations scanning device reads with regard to signs right up until a powerful sign is located and so forth.

QSL credit cards:

The particular {Queen} signal is really a standard assortment of three-letter concept encodings, just about all beginning with the actual notice “Q”, in the beginning produced with regard to industrial radiotelegraph connection, as well as later on followed simply by additional stereo companies, particularly novice stereo. In the modern audio tracks transmission tranny grow older, the actual {Queen} requirements aren’t important. but nevertheless being used and therefore are seen as {sort of} traditions.

As part of DX-ing as well as DX-peditions the particular QSL credit card or even the {evidence of} make contact with credit card will be discussed. QSL is but one this kind of Q-code meaning “I admit receipt”. The normal training {could be that the} types that produced make contact with in a specific rate of recurrence swap any QSL greeting card within the postal mail to verify their own get in touch with as well as interactions. These kinds of QSL credit cards may be used like a {evidence of} their own producing make contact with as well as beginner staff that speak to a specific quantity of additional novice stereo providers in the specific period is actually given. Furthermore, they may be recognized and also thankful being that they are considered to become effective novice radio stations providers.

Remote control area calling:

Several nations have got a smaller amount beginner stereo providers, as well as producing connection with these types of is recognized as unique. Therefore, whenever a stereo novice from all of these locations tends to make make contact with, some other pig providers head to create conversation with this particular or these kinds of hams. Producing experience of these kinds of a smaller amount displayed areas has its own prizes and also specific things to consider inside the merit applications.

Hamfests:

Interpersonal occasions for your pork households as well as buddies. It’s actually some thing similar to the household focused interpersonal {festivals} wherever you will find product sales, trades, conferences and also entertaining. Likewise, the actual {holiday} {is stuffed with} marketing as well as swapping hams, conference true to life pig buddies as well as enjoyable occasions for any evening or even occasionally above day or two.

Dialogue teams and also {Netting}:

Pig providers type attorney at law party depending on typical pursuits besides pork or even it’s also any pork connected debate team and so they {can build} {netting} or even sites.

In case a stereo enthusiast receives a part of most of these diverse actions, they’re guaranteed to in no way become bored to death. Consider many of them, and find out if you want to obtain included.

Alex Kuhns writes for {Uniformhaven.com|UniformHaven.com} who sells dickies scrubs, dickies scrub tops and lab coats as well as a lot of other items.

NBC Ham radio swap meet 1976/Goldstone tracking station

Antenna Quick Disconnect CB & Amateur Radio 3/8-24 Base $10.99 3/8-24 CB & Amateur Radio Antenna Quick Release Disconnect Adapter….

Alfa AWUS051NH 500mW High Gain 802.11a/b/g/n high power Wireless USB A / B / G / N Wireless WiFi Network adapter With a 5dBi and 9dBi Rubber Antenna and Suction cup / Clip Window Mount – High speed Up to 300 Mbps – With Hot Swap Support $39.99 802.11a/b/g/n Wireless USB adapter provides users to launch 802.11a/b/g/n wireless network at 150/300 Mbps in the 2.4GHz/5.8GHz band, which is also compatible with 802.11a/b/g wireless devices at 11/54 Mbps.brbrYou can configure AWUS051NH with ad-hoc mode to connect to other 2.4GHz/5.8GHz wireless computers, or with Infrastructure mode to connect to a wireless AP or router for accessing to Interne…

Uniden Walkie Talkie: A Review Of The Uniden GMR2872-2CK Waterproof Two-Way Radio

I’ve always been fond of using a Uniden walkie talkie, as it’s among the finest ways of communication particularly in the wild. Whenever I go for a hike with my partner, I make certain we have an excellent approach of communication so we can avoid any unnecessary danger. I’ve been making use of the Uniden GMR2872-2CK Waterproof Two-Way Radio for very a whilst now and I wanted to share this review so that individuals out there who are searching for a fantastic walkie talkie would uncover this model and make use of its positive aspects, just like how I and my partner did.

Design

The 1 factor that makes this model greater than others will be the reality that it is waterproof, so you will not need to worry about finding an electric shock whilst hiking on a rainy day. It is submersible in three feet of water for up to 30 minutes. It’s particularly helpful whenever you walk via wet areas and shallow waters, as how I and my partner do out inside the wild. In appearance, I feel this model is quite special and appealing, too. The yellow body is very various from other typical black scanners. It is also designed to be compact, lightweight, and flexible sufficient for optimal use during trips, travels, and a variety of outdoor activities.

The LCD display is big, backlit, and has very clear digits which make reading the info on the screen really effortless to do. You are able to quickly trace the frequency that you are trying to find by means of the screen display. The pair comes in a package with all the important accessories which includes two belt clips along with a charging cradle which has a dock for each and every unit. The rechargeable batteries are quite useful because you do not have to replace them every single now and then. Also, you do not need to open the unit to replace the batteries. You are able to just position them on the cradle, just like a rechargeable cordless telephone.

Scanning and Audio Output

This Uniden walkie talkie has 22 channels – 15 GMRS and 7 FRS frequencies which have enough channels to maintain you updates with the police calls, fire and emergency calls, marine, aircraft, as well as other service channels, and ham radio stations. The 7 FRS are dedicated for personal frequencies, giving you several alternatives for you and your partner to make use of. You are able to often choose whichever frequency you would like as long as it can be an FRS channel.

As a personal radio, this model has a great deal of outstanding characteristics. You’ll be able to develop your own group for all of your companions where you are all set to 1 frequency and only you are able to hear your conversations. In this mode, you can’t obtain transmissions out of your group, which means that the mode is exclusive for your group use. It is possible to set a group code from numbers 0-142 and every of your group members really should have the exact same code. Every of you also get to set a nickname which appears on the screen of the receiver when you make a call. This is superb for personal communications particularly in the event you do not want anyone else to hear about what you are discussing.

It is possible to also set 10 distinct call tone alerts which indicate when a person is attempting to contact you. If you are sleeping or you don’t want to be disturbed by the noise of transmissions, you’ll be able to also set the unit to silent mode. The roger beep is an straightforward indicator which tells you when you have successfully received and sent the message to your partner or group mates. It is possible to also make direct calls to distinct people which you want to talk to privately. One of the finest features of this device is the automatic channel change which sets you and all of your group members to a diverse frequency if the frequency you’re on is interrupted or full of other users. It is possible to do this automatically having a basic touch of a button.

The channel scan feature lets you scan through all 22 channels to hear the activities happening in every channel. The two-second delay lets you listen to the channel when it is active, and following two seconds of inactivity, that is when the scanner will jump to the next channel. This keep you updated even with late responses.

The power increase button offers maximum range for your device so you can transmit messages even at excellent distances. The maximum range of the unit’s transmission is 28 miles, dependent on the environment and surrounding blockages.

Other Features

The LCD display indicates the level of battery life, a lot like a mobile phone. It also indicates when power is running low so you are able to be ready to charge it. The keypad lock feature prevents the accidental modifications in settings and frequencies. The battery life of the unit can last up to 12 hours. It also has a power saver mode to conserve energy consumption.

Conclusion

I do not know about you, but I think those specs had been fairly impressive. This Uniden walkie talkie truly has superb features that may be really beneficial outdoors. The Uniden GMR2872-2CK Waterproof Two-Way Radio is really a wonderful catch and would make a great Christmas gift.

N4LS/M mobile ham radio installation – Kenwood TS480 and TM-D710A

Samlex America SEC-1223 23 Amp Regulated Linear DC 12 Volt Power Supply $102.99 These advanced switch-mode DC power supplies were designed specifically for use with land mobile radio. The power supplies produce clean reliable power and are highly filtered to suppress RFI….

POWER CABLE FOR MOBILE EQUIPMENT W/FUSE $10.95 CABLE POWER W/CONNECTOR/FUSE…

Reverse SMA to PL-259 Adapter Cable – Female/Female for Wouxun $14.99 This Cable accepts a PL-259 from Base/Mobile antennas, & adapts it to the Male”SMA” style jack found on Wouxun, Linton & other ‘reverse sma’ Two Way radios & Amateur Radio handhelds. (see closeup of SMA on cable) Not for Yaesu, Alinco, Icom or Kenwood Ham Radios (see other version). Fits Wouxon KG-UVD series of Handheld radios, & others wth “pin in radio” sma jacks….

Kenwood TK3230K 2 Channel UHF Hand Held Radio $163.99 The Kenwood ProTalk TK-3230 Two-Way UHF Radio is just what you need if you are at a work site, handling hospitality, or a contractor who needs to be constantly in touch with his workers. This reliable and easy-to-use radio delivers just what it promises – first-rate, two-channel UHF capability. The 56 programmable pre-stored frequencies give you enough leeway to converse without interference. Thi…

Uniden Trunk Tracker IV Scanner (Mobile Equipment / Scanners) $489.97 Uniden Trunk Tracker IV Scanner. – Uniden compact APCO 25 handheld scanner- TrunkTracker IV (Motorola APCO 25 Digital, Motorola, EDACS, LTR)- 25000 Dynamically allocated channels- Close Call RF capture technology – instantly tunes to signals from nearby transmitters- Fire tone-out- Multi-colored display backlight- Alpha tagging- 100 Quick key system access- Band scope – graphically finds radio act…

How should I correct my ground amateur radio antenna?

I've got an end to coax fed ohm antenna fed with 50th It is in a tree to to 50 'at its highest point. From there, through the attic and the wall and into a wall port in teaching I will coax. Some suggest that I should have the antenna with a point mass attached to the coax where it comes from the bottom wall and then put out another point. Both points would go to the ground floor bar. Some have me I said, I do not need a reason, but I was grounded yesterday testing my setup with an antenna analyzer and without the antenna, when I wrapped the persuade to itself, changed the SWR. That sounds like a radio frequency energy to build. My friend said that would be removed if I have the antenna grounded. What do you think?

It is never get an answer, trust your instincts Radio

My Amateur Radio Equipment