(A) 4 mph
(B) 5 mph
(C) 6 mph
(D) 30 mph
Answer:
(C) 6 mph
Step-by-step explanation:
Given,
The time taken by Tobin = 30 minutes,
While, the time taken by her opponent = 45 minutes,
So, the ratio of the time taken by tobin and her opponent = 30 : 45
Thus, the ratio of speed of tobin and her opponent =
= 45 : 30
= 3 : 2
Suppose speed of tobin = 3x and speed of opponent = 2x
Where, x is positive real number,
Difference in speed = 3x - 2x = x
According to the question,
x = 2 miles per hour,
Hence, the speed of Tobin = 3x = 6 miles per hour.
Option (C) is correct
Me need help pls
adjective
definition:
Lacking sense or clear, sound reasoning.
Answer:
8, 36, 81, 11, 7, 1000
Step-by-step explanation:
A
Lets start with number one.
x^2 = 64.
That means that x times x equals 64.
To find x's value, simply find the square root of 64, which is 8.
So x = 8.
For the second one, the square root of x is 6.
That means that 6 x 6 = x
6 x 6 = 36.
So, x = 36.
B
For the third one, the square root of x is 9.
That means that 9 x 9 = x
9 x 9 = 81
So, x = 81.
For the fourth one, x^2 = 121
That means x times x = 121
To find x's value, simply find the square root of 121, which is 11
So, x = 11.
C
For the fifth one, x^3 = 343.
That means that x times x times x = 343
To find x's value, simply find the square root of 343, which is 7.
So, x = 7.
For the sixth and last one, the cube root of x is 10.
That means 10 x 10 x 10 = x.
10 x 10 x 10 = 1,000
So, x = 1,000
I hope this helps! :)
Answer:
950- to the nearest ten
900- to the nearest hundred
Step-by-step explanation:
When rounding, the number that we look at is the number to the right of what we are rounding to. When rounding to the nearest ten we look at the number to the right which is in the one's position. In this case that is a 9. In rounding, if the number we are looking at is 1-4 we round down an if the number we are looking at is 5-9 we round up. Since the number is a 9 we round up and the nearest 10 above 49 is 50 so 949 rounded to the nearest 10 is 950. We will repeat this same process when rounding to the hundred. In this case the number to the right of the hundred is the ten which is a 4. since it is between 1-4 we will round down. the nearest hundred below 949 is 900 so 949 rounded to the nearest hundred is 900.
I hope this helps and please don't hesitate to ask if there is anything still unclear!