Not sure if it's right
250 days = 100%
14 days = ?%
1 day = 100/250 = 0.4%
Therefore 14days = 0.4% • 14 = 5.6 %
For "less than or equal to" you can use <=
For "greater than or equal to" you can use >=
√(15(x−1)) / √(2x^2)
Value under square root must be ≥ 0
Value in denominator not = 0
15(x−1) ≥ 0
x−1 ≥ 0
x ≥ 1
2x^2 > 0
x^2 > 0
x ≠ 0
Combining both inequalities, we get:
x ≥ 1
Answer:
20.5 cm
21.5 cm
Step-by-step explanation:
Length is 21 cm correct to 2 significant figures
<u>Find lower and upper bounds</u>
- The lower bound is the smallest value that will round up to the approximate value.
- The upper bound is the smallest value that will round up to the next approximate value.
<u>As per above definition:</u>
- Lower bound is 20.5 cm rounded to 21
- Upper bound is 21.5 cm rounded to 22
You can use prime factorization to find the GCF of a set of numbers. This often works better for large numbers, where generating lists of all factors can be time-consuming.
Here’s how to find the GCF of a set of numbers using prime factorization:
* List the prime factors of each number.
* Circle every common prime factor — that is, every prime factor that’s a factor of every number in the set.
* Multiply all the circled numbers.
The result is the GCF.
For example, suppose you want to find the GCF of 28, 42, and 70. Step 1 says to list the prime factors of each number. Step 2 says to circle every prime factor that’s common to all three numbers (as shown in the following figure).
As you can see, the numbers 2 and 7 are common factors of all three numbers. Multiply these circled numbers together:
2 · 7 = 14
Thus, the GCF of 28, 42, and 70 is 14.