Download TI 83 Plus and the Equation Solver

TI 83 Plus and the Equation Solver
To run Equation Solver:
1.
I to see the pieces of the formula
8. IENTER
IMATHI
2. G O:Solver
IENTER
I
3. G to change your equation. Make
sure your equation =0. If your equations
are stored in rB, go to step 4. Otherwise,
enter the equation and go to step 8.
4. IVARSI
5. [B
9. enter known values
10. enter 1 on the piece you want
11. put cursor on the 1 of the piece you
want
12.
IALPHAI
[SOLVE]
13. Repeat as needed
Y-VARS IENTER
I
6. 1:function IENTER
I
7. G to choose the correct equation and
press ~
Using the Equation Solver, compute as indicated.
1. Use the formula I=prt, where 1 is interest, p is principal, r is the
3.5 years
annual rate, and t is time in years. How long would you need for
$1875 to accrue $525 interest at 8%?
2.
Myaccount earns 4% interest. How much money do 1 have in my
account to earn $147.50 interest in 2.5 years?
$1475
3.
Use the formula D=rt, where D is distance, r is the rate, and t is time.
Joe needs to travel 357 miles in 5 hours. Howfast does he need to
travel to be on time for his appointment?
71.4 mph
On his return trip, Joe went a different route. He covered 425 miles
6.07 hours
4.
whilegoingthe speed limitof 70 mph. Howlongdid it take him to get 6 hr. 4.2
home?
min.
5.
Use the formula A=1tr, where A is area of a circle, 1t is approximately
13.2 yards
3.14 (but use the 1t button on the calculator),and r is the radius. 1
have a circular garden with an area of 547.391 square yards. What is
the radius of my garden?
6.
Use the formula E=IR, where E is the voltage in volts, 1 is the current
in amperes, R is the resistance in ohms. A 12-volt battery with a 4.6
ohm resister are connected. What is the current in amperes?
2.609 amps
7. When a 24-volt battery has a 4.5 voltage drop across a single resistor,
5.333 0
8.
ER=2.346
11=4.8
12=3.428
13=2
IT=10.23
what is the resistance in ohms?
Use the formula R=1/(A-1+ B-1+ C-1),where R is equivalent
resistance for a parallel circuit, A is resistance #1, B is resistance #2,
and C is resistance #3. Three resistors are connected in parallel with
a 12-volt battery. Given that the first resistor is 50, the second is 70,
and the third is 120, determine the equivalent resistance, the total
current, and the current at each resistor.
Kathie Daviau, Billings Adult Basic Education Center, @2005
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