9) Find q if p = -12 and the quotient p/q = -3.
a) -4 (wrong)
b) 4*
c) -1/4 (only the one is minus)
d) 1/4
19) 32 ÷ 24 is EXACTLY equal to
a) 1.3 (wrong)
b) 2.7
c) 4/3
d) 8/3*
20) Which answer choice is equivalent to −65/−12?
a) 65/12 (wrong)
b) 65/-12
c) --65/-12*
d) -65/12
22)At noon the temperature was 6°C. Over the next five hours the temperature dropped another 8 degrees. Then every hour until 9:00 the temperature rose 4 degrees. What was the temperature at 9:00?
a) 10 c (wrong)
b) 12 c
c) 14 c*
d) 16 c
9. ok
19. 32 ÷ 24
= 32/24 = 4/3
20.
−65/−12 = 65/12 <----- the correct answer
22.
noon : 6°
5 pm: 6°- 8° = -2°
5:00 pm to 9:00 mp is 4 hours, 4° per hour ....
so it rose another 16°
at 9:00 pm it was 14°
im redoing test questions i got wrong. it says 20 is wrong
9) To find q, we can use the equation p/q = -3. Given that p = -12, we substitute the value of p into the equation:
-12/q = -3
To solve for q, we can cross-multiply:
-12 = -3q
Next, isolate q by dividing both sides of the equation by -3:
-12 / -3 = q
This simplifies to:
q = 4
Therefore, the correct answer is b) 4.
19) To find the exact value of 32 ÷ 24, we divide 32 by 24:
32 ÷ 24 = 1.333...
Since the question asks for the exact value, we need to express it as a fraction. To do this, we can convert the decimal to a fraction by multiplying both the numerator and denominator by 10 until we remove the decimal:
1.333... = 1.333... × 10/10 = 13.333.../10
Since the repeating decimal continues indefinitely, we can simplify this as a fraction by representing the repeating part as a variable x:
13.333... = 13 + x
To find the value of x, we can subtract the original decimal from the simplified fraction:
13.333... - 1.333... = 13 + x - 1 - x
12 = 12
Therefore, the exact value of 32 ÷ 24 is 4/3.
Hence, the correct answer is c) 4/3.
20) To simplify the expression -65/-12, we can divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD of 65 and 12 is 1.
Dividing both the numerator and denominator by 1, we get the simplified fraction:
-65 / -12 = 65 / 12
Thus, the answer is a) 65/12.
22) The temperature at noon was 6°C. Over the next five hours, the temperature dropped by 8 degrees. Therefore, the temperature after five hours is 6 - 8 = -2°C.
From 5:00 pm to 9:00 pm, four hours passed. During this period, the temperature rose by 4 degrees per hour. Therefore, the temperature increased by 4 x 4 = 16 degrees.
Adding this change to the temperature at 5:00 pm (-2°C + 16°C), we get:
-2°C + 16°C = 14°C
Thus, the correct answer is c) 14°C.