Answer:
wheres the expression
Step-by-step explanation:
30 × 100 = 3,000, 30 × 10³ = 30,000 and 30 × 1000 = 30000. Therefore, options A, B, C and D are the correct answers.
<h3>What is an equation?</h3>
In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
A) 30 × 100 = 3,000
Here, LHS = RHS
B) 30 × 10³ = 30,000
Here, LHS = RHS
C) 30 × 1000 = 30000
Here, LHS = RHS
D) 
30 × 10000 = 300,000
Here, LHS ≠ RHS
E) 30 × 10000 = 30,000
= 300,000
Here, LHS ≠ RHS
Therefore, options A, B, C and D are the correct answers.
To learn more about an equation visit:
brainly.com/question/14686792.
#SPJ1
The total number of ways of picking r objects out of n, is given by the formula:

where a! is "a factorial", defined as a!=1*2*3*...*(a-1)*a
We are picking 15 objects (questions) out of 20, so substitute r=15 and n=20 in the formula:


Answer: A
Answer:
6.5
Square root of 39 (6.2449979984 and or 6.2)
Square root of 3 (1.73205080757 and or 1.7)
2.7
Step-by-step explanation:
Hope this helps
The first three statements are correct while the last statement is incorrect.