3A1 chapter 1 questions well answered
to pass
The following is a rule for algebraic addition:
a. If the signs are alike, the quantities are divided as in ordinary arithmetic and the common sign is
placed in front of the answer.
b. If the signs are alike, the quantities are added as in ordinary arithmetic and the common sign is placed
in front of the answer.
c. If the signs are alike, the quantities are added as in ordinary arithmetic and the minus sign is placed in
front of the answer.
d. If the signs are alike, the quantities are subtracted as in ordinary arithmetic and the common sign is
placed in front of the answer.
e. If the signs are unlike, the quantities are added as in ordinary arithmetic and the common sign is
placed in front of the answer. - correct answer ✔✔b
The rule for algebraic subtraction states:
a. Change the sign of the quantity to be subtracted and then subtract the quantities algebraically.
b. Change the sign of the quantity to be subtracted and then multiply the quantities algebraically.
c. Change the sign of the quantity to be added and then add the quantities algebraically.
d. Change the sign of the quantity to be added and then subtract the quantities algebraically.
e. Change the sign of the quantity to be subtracted and then add the quantities algebraically. - correct
answer ✔✔e
If s = v + u x t solve for v:
2
a. 2s - u
t
b. 2s - ut
c. 2s + u
, t
d. su + 2t
e. 2u - st. - correct answer ✔✔a
Use the formula P1V1n = P2V2n to find "n" when: P1=1750 kPa, V1=0.05 m3, P2=122.5 kPa and
V2=0.375 m3.
a. -1.320
b. 0.921
c. 1.320
d. 2.213
e. 3.321. - correct answer ✔✔c
In the expression 42 = 16, the number 4 is called the _____ of 16.
a. Square root.
b. Cube root.
c. Square.
d. Cube.
e. Multiplicand. - correct answer ✔✔a
One of the following is a rule that must be observed for the removal of brackets:
a. Where a sign precedes the brackets, simply remove the brackets.
b. Where a sign precedes the brackets, remove the brackets and change the signs of all the quantities
within the brackets.
c. Where a number appears immediately in front of the bracket, the brackets can be removed if all the
quantities inside the brackets are multiplied by this number.
d. Where a number appears immediately in front of the bracket, the brackets can be removed if all the
quantities inside the brackets are divided by this number.
e. Where a sign precedes the brackets, remove the brackets and change the sign of the first quantity
within the brackets. - correct answer ✔✔c
to pass
The following is a rule for algebraic addition:
a. If the signs are alike, the quantities are divided as in ordinary arithmetic and the common sign is
placed in front of the answer.
b. If the signs are alike, the quantities are added as in ordinary arithmetic and the common sign is placed
in front of the answer.
c. If the signs are alike, the quantities are added as in ordinary arithmetic and the minus sign is placed in
front of the answer.
d. If the signs are alike, the quantities are subtracted as in ordinary arithmetic and the common sign is
placed in front of the answer.
e. If the signs are unlike, the quantities are added as in ordinary arithmetic and the common sign is
placed in front of the answer. - correct answer ✔✔b
The rule for algebraic subtraction states:
a. Change the sign of the quantity to be subtracted and then subtract the quantities algebraically.
b. Change the sign of the quantity to be subtracted and then multiply the quantities algebraically.
c. Change the sign of the quantity to be added and then add the quantities algebraically.
d. Change the sign of the quantity to be added and then subtract the quantities algebraically.
e. Change the sign of the quantity to be subtracted and then add the quantities algebraically. - correct
answer ✔✔e
If s = v + u x t solve for v:
2
a. 2s - u
t
b. 2s - ut
c. 2s + u
, t
d. su + 2t
e. 2u - st. - correct answer ✔✔a
Use the formula P1V1n = P2V2n to find "n" when: P1=1750 kPa, V1=0.05 m3, P2=122.5 kPa and
V2=0.375 m3.
a. -1.320
b. 0.921
c. 1.320
d. 2.213
e. 3.321. - correct answer ✔✔c
In the expression 42 = 16, the number 4 is called the _____ of 16.
a. Square root.
b. Cube root.
c. Square.
d. Cube.
e. Multiplicand. - correct answer ✔✔a
One of the following is a rule that must be observed for the removal of brackets:
a. Where a sign precedes the brackets, simply remove the brackets.
b. Where a sign precedes the brackets, remove the brackets and change the signs of all the quantities
within the brackets.
c. Where a number appears immediately in front of the bracket, the brackets can be removed if all the
quantities inside the brackets are multiplied by this number.
d. Where a number appears immediately in front of the bracket, the brackets can be removed if all the
quantities inside the brackets are divided by this number.
e. Where a sign precedes the brackets, remove the brackets and change the sign of the first quantity
within the brackets. - correct answer ✔✔c
