(01.05 mc)the total charge on 7 particles is −42 units. all the particles have the same charge.

what is the charge on each particle?

6 units
5 units
−5 units
−6 units
question 2(multiple choice worth 1 points)
(01.05 lc)which fraction is equivalent to negative 4 over 6?

6 over negative 4
negative 6 over 4
4 over negative 6
4 over 6
question 3(multiple choice worth 1 points)
(01.02 hc)rhett is showing his work in simplifying (−7.9 + 5.2) − 1.4.

step 1: (5.2 − 7.9) − 1.4
step 2: 5.2 − (7.9 + 1.4)
step 3: 5.2 − (9.3)
step 4: −4.1

which statement is true?

in step 1, rhett used the distributive property.
in step 2, rhett used the associative property.
in step 3, rhett used the commutative property.
in step 4, rhett's answer is incorrect.
question 4(multiple choice worth 1 points)
(01.02mc)point a is located at negative 7 over 10 and point b is located at negative 2 over 10. what is the distance between points a and b?

negative 7 over 10 plus negative 2 over 10 = negative 9 over 10; therefore, the distance from a to b is absolute value of negative 9 over 10 equals 9 over 10 units
negative 7 over 10 plus negative 2 over 10 = negative 9 over 10; therefore, the distance from a to b is absolute value of negative 9 over 10 equals negative 9 over 10 units
negative 7 over 10 minus negative 2 over 10 = negative 5 over 10; therefore, the distance from a to b is absolute value of negative 5 over 10 equals 5 over 10 units
negative 7 over 10 minus negative 2 over 10 = negative 5 over 10; therefore, the distance from a to b is absolute value of negative 5 over 10 equals negative 5 over 10 units
question 5(multiple choice worth 1 points)
(01.04 mc)simplify the following expression: (−1)(−7)(4)

12
28
−12
−28
question 6(multiple choice worth 1 points)
(01.01 lc)where is the answer to the expression 3 − 7 located on a horizontal number line?

4 units to the left of 3
7 units to the left of 3
4 units to the right of 3
7 units to the right of 3
question 7(multiple choice worth 1 points)
(01.01 lc)what should be added to 3 to make the sum 0?

−3
−2
0
3
question 8(multiple choice worth 1 points)
(01.05 mc)the total temperature measured by 3 thermometers was −15 degrees fahrenheit.

what was the average temperature measured by the 3 thermometers?

36 degrees fahrenheit
−36 degrees fahrenheit
5 degrees fahrenheit
−5 degrees fahrenheit
question 9(multiple choice worth 1 points)
(01.04 mc)an ice sculpture is melting from the heat. assuming its height changes by negative 2 over 25 meters every hour, what will be the change in the height after 5 hours?

negative 2 over 5 meters
negative 2 over 125 meters
2 over 125 meters
2 over 5 meters
question 10(multiple choice worth 1 points)
(01.02 mc)betty had $70. she bought a necklace for $9 and a ring for $7. which expression correctly shows the total money betty has left?

a

$70 − (−$9) + (−$7)

b

$70 + (−$9) + (−$7)

c

$70 − (−$9) − (−$7)

d

$70 + (−$9) − (−$7)

a
b
c
d
question 11(multiple choice worth 1 points)
(01.01 mc)why is 3 + (−5) equal to −2?

because it is 5 units to the left of 0 on a horizontal number line
because it is 5 units to the right of 3 on a horizontal number line
because it is 5 units to the left of 3 on a horizontal number line
because it is 5 units to the right of 0 on a horizontal number line
question 12(multiple choice worth 1 points)