Question

What will be an ideal response?

Answer 1

c = Tcd    d= c/rc = 12 / 3.1416 =3.8197
Diameter = 3.82 inches (rounded to 2 places)

Answer 2

3z—z=5+7    Added —z to both sides
2z = 12    Collected terms
z = 12 / 2    Divided both sides by 2
z= 6    Simplified
z = 6    This is the solution.

Answer 3

Data List:    "Bill", 32, 70, "Sally", 36, 68, "Jill", 24, 64

Answer 4


Answer 5

D. translating C++ programs

Answer 6

The change is from June, so: vi = 0.9 and v2= unknown
f= v2 1 vi    = ( f— 1) *100
f= v21 0.9
— 20 = [(v2 / 0.9) — 1)] * 100    v2= [( 20 / 100) + 1] * 0.9
v2 = 0.8 * 0.9
v2= $0.72 million (decrease)
July sales would need to be $0,72 million to be 20% less than in June.

Answer 7

My ABODE is a sturdy ADOBE EDIFICE with a FADED FACADE.

Answer 8

B. &&

Answer 9

27% / 100% = 0.27
45% / 100% — 0.45
16%    16% / 100% — 0.16
120% / 100% =1.2
30%    30% / 100% = 0.3
6% / 100%    = 0.06

Answer 10

Similarities: Both are assignment statements. In both cases the variable that appears on the left side of the equal sign, also appears on the right. Each time one of these statements is executed, an amount is added to the current value of the variable and the result is saved as the new value of that variable.
Differences: Incrementing adds a constant value. Accumulating adds a variable amount. The amount to be accumulated is stored in a variable and is changed before each accumulation step.

Answer 11


Answer 12


Answer 13

```
DO WHILE n = 0
OUTPUT "Once more around the loop"
LOOP
```

Answer 14


Answer 15

Replace LET n = 200
Replace DO WHILE n > = 0 Replace LET n = n — 25
The modified program is:
LET n = — 8
DO WHILE n < = 10 OUTPUT n
LET n =n + 3
LOOP    with LET n = —8
with DO WHILE n < =10 with LET n = n + 3

Answer 16

Round 500.1 up at 100s place.
Rounding digit is 5.
Add one to rounding digit, giving 600.1. Round 600.1 down at hundreds place.
The zero digits are already zero filled.
Drop the digit to the right of the decimal point. Result is 600.

Note: When a number is even slightly above 500 it will round up at the 100s place to 600.

Answer 17

1. true
2. false
3. true
4. true
5. false

Answer 18

```
Replace LET n = 0 with INPUT n
Swap the position of the INPUT and OUTPUT statements inside the loop.
```

The modified program would look like:
```
INPUT n
DO WHILE n < 99
 OUTPUT n
INPUT n
LOOP
```

Note: One consequence of this modification would be that the termination
value (a value of 99 or greater) would no longer be outputted.

Answer 19


Answer 20

C. the operating system

Answer 21

2y —y = 3y --4 + 4    Added 4 to both sides
2y —y —3y = 0    Added —3y to both sides
— 2y = 0    Collected terms
(— 2y / —2) = 0 / —2    Divided by —2
y = 0    Simplified
y= 0    This is the solution.

Answer 22

.1 * 100% =10%
01 * 100%=1%
001 * 100% = 0.1%    (1/10 of a percent)
.15 * 100% =15%
.45 * 100% = 45%
1.1 * 100% =110%

Answer 23

1. C. Charles Babbage
2. D. Luigi F. Menabrea
3. A. John Atanasoff and Cilfford Berry
4. B. Augusta Ada Byron
5. F. John von Neumann
6. E. John Mauchly and J. Presper Eckert.
7. B. Augusta Ada Byron

Answer 24


Answer 25


Answer 26

B. the for statement

Answer 27

```
Variable numl now contains the value 33
Variable num2 now contains the value 34
```

Answer 28

Assign Values                   NOT (1 = 1 AND 2 — 2 0)        
Add Parentheses              NOT ((1 = 1) AND ((2 — 2) = 0))        
Do Arithmetic                   NOT ((1 = 1) AND (0 = 0))        
Evaluate Relational Exp.         NOT (T AND T)       
Evaluate Logical Exp.               
Parentheses First        NOT (T AND T)    = NOT (T)   
AND                         NOT (T)    = F   
NOT Next                 FALSE

Answer 29

y-intercept = —1

Answer 30

x > = 1

Answer 31

The ball takes the longest time to disappear under condition 2.
Of all the information given, the temperature makes the biggest difference in this problem. Since the freezing point of fresh water is 32 degrees Fahrenheit, the lake surface will be frozen solid at a temperature of 20 degrees Fahrenheit. Thus, the ball will fall 5 feet to the surface and after a few bounces will to come to rest and stay put.

Answer 32

```
produce_report
CALL initial_processing
DO WHILE name < > "End of Data" CALL detail_processing
LOOP
CALL final_processing
initial_processing
LET count = 0
LET lines_per_page = 50
LET page_break = Chr(12)
LET blank line =
LET line_count = 99
INPUT name, sex_code, status_code
detail_processing
IF sex_code = "F" AND status_code = "F" THEN
IF line_count > lines_per_page THEN CALL start_new_page OUTPUT name
LET count = count + 1
END IF
INPUT name, sex_code, status_code
final_processing
OUTPUT "total number of students reported is ", count
start_new_page
OUTPUT page_break
OUTPUT "Full-time Female Students" OUTPUT blank lice
LET line_count = 2
```

Answer 33

Round 201.23 down at 1/10s place.
Rounding digit is 2.
For all the digits right of the tenths place:
Drop those to the right of the decimal place.
Zero-fill those to the left of the decimal place.
Result is 201.2.

Answer 34

00000 + 0000    = 00000
00010 + 0001    = 00011
10000 + 0000    =10000
10000 + 0001    = 10001
A0000 + 0001    = A0001
A0000 + A000 = AA000

Answer 35

Pair of reciprocal conversion factors:
4 (qt / gal)    1 / 4 (gal / qt)
x (qt) = 16 (gal) * 4 (qt / gal) = 64 qt

Answer 36


Answer 37


Answer 38

y-intercept = +1

Answer 39

(Note: The binary equivalent of 20010 is the binary equivalent of 100E0 with an additional zero on the right end. Adding the extra zero on the right is the same as multiplying by 2.)

Answer 40

The solution using direct assignment of logic is:
LET stop_processing = end_of data OR processing_error
An alternative solution using an IF statement is:
IF end of data OR processing_error THEN stop_processing = true

Answer 41

INPUT car_manufacturer

Answer 42

p+3p=2+1    Added 1 to both sides
4p = 3          Collected terms
4p/4=3 /4    Divided both sides by 4
p = 3            Simplified
3
p = 4    This is the solution.

Answer 43

4x = 4    Cross multiplied
4x / 4 = 4 / 4 Divided both sides by 4
x = 1    Simplified
x =1    This is the solution.

Answer 44

OUTPUT average

Answer 45

Round 16.872 up at the 1/0000s place.
Rounding digit is 2.
There are no digits to the right of the rounding place, so don't add one.
Round 16.872 down at thousandths place.
There are no digits to the right of the units place to drop.

Answer 46

v = height * width* depth
v= 6 * 12 *3 =216

Answer 47


Answer 48

Data List:    "Impala", "Camaro", "Corvette"

Answer 49

```
INPUT altitude
INPUT base
LET area = (altitude * base) / 2
OUTPUT area
```

Answer 50

OUTPUT numl, num2, num3

Answer 51


Answer 52