Answer:
5 meters
Step-by-step explanation:
We have to calculate 25% of 20 meters
So we rewrite the equation
25% × 20
× 20
0.25 × 20
= 5 meters
25% of 20 meters is 5 meters
Answer:
b. 12 and 13
Step-by-step explanation:
let x be the 1st number and x + 1 is the 2nd number
x(x+1) = 156
x² + x - 156 = 0
(x+13)(x-12)=0
x+13=0
x = -13
x-12=0
x = 12
∴ the 1st number is 12 and the second number is 13
The required average speed to reach the school is 2.65 miles per minute.
Given that,
School starts in 45 minutes and you live 17 miles from school.
To determine at what average speed (in miles per hour) you need to travel in order to arrive at school on time.
Speed is defined as when an object is subjected to move, the distance covered by the object in a certain time interval is the speed of that object.
The average of the values is the ratio of the total sum of values to the number of values.
Here,
Distance = 17 miles
Time = 45 minutes
Speed = distance / time
Speed = 45 / 17
Speed = 2.65 miles per minute
Thus, the required average speed to reach the school is 2.65 miles per minute.
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it will take 9 weeks for you and your friend to have the same amount of money in your savings accounts.
To determine the number of weeks it takes for both you and your friend to have the same amount of money in your savings accounts, we need to set up an equation.
Let's denote the number of weeks as 'x'. For you, the amount of money in your savings account after 'x' weeks can be calculated as follows:
Amount of money in your account = $75 + $5x
For your friend, the amount of money in his savings account after 'x' weeks can be calculated as:
Amount of money in your friend's account = $30 + $10x
To find the number of weeks where you both have the same amount of money, we set up the equation:
$75 + $5x = $30 + $10x
Simplifying the equation:
$5x - $10x = $30 - $75
-$5x = -$45
Dividing both sides of the equation by -5 gives us:
x = 9
Therefore, it will take 9 weeks for you and your friend to have the same amount of money in your savings accounts.
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Answer:
9 weeks
Step-by-step explanation:
5x+75=10x+30
-5x -5x
75=5x+30
-30 -30
45=5x
÷5 ÷5
9=x
x=9