Answer:
-10x-28
Step-by-step explanation:
-
// Plug x into the equation
5(0.3)+2y=20
1.5+2y=20
// Subtract 1.5 from each side
2y=18.5
//Divide each side by 2
y=9.25 (C)
Answer:
Step-by-step explanation:
The common ratio of a geometric sequence can be found dividing the current term in the sequence by the previous term in the sequence. In other words, where:
is the common ratio of the geometric sequence
is the current term in the sequence
is the previous term in the sequence
- For and
- For and
Since the ratio is the same for both pair of number in the geometric sequence, we can conclude that 5 is the common ratio of the sequence.
Answer:
Her original speed is 54 mi/h
Step-by-step explanation:
Here, we want to calculate the original speed
Let this be x mi/h
Mathematically;
distance = speed * time
So she drove at a speed of x mi/h for 2 hours, then (x-10) mi/h for the remaining 1 hour for a total 152 mi journey
Mathematically, we can add up the journey parts as
x(2) + (x-10)1 = 152
2x + x - 10 = 152
3x = 152 + 10
3x = 162
x = 162/3
x = 54 mi/h
Answer:
32
Step-by-step explanation:
Divide 24 by 3/4 to find the number.
24 ÷ 3/4
= 24 × 4/3
= 32