Answer:
x = - 3, x = 
Step-by-step explanation:
Given
4x² + 2x - 30 = 0 ( divide through by 2 )
2x² + x - 15 = 0
Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 2 × - 15 = - 30 and sum = + 1
The factors are + 6 and - 5
Use these factors to split the x- term
2x² + 6x - 5x - 15 = 0 ( factor the first/second and third/fourth terms )
2x(x + 3) - 5(x + 3) = 0 ← factor out (x + 3) from each term
(x + 3)(2x - 5) = 0
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
2x - 5 = 0 ⇒ 2x = 5 ⇒ x =
Answer: it is not a function
Step-by-step explanation:
Given :
= 3x + 1
The first thing is to make y the subject of the formula, that means we will take the square root of both sides
y = 
since y = , the the value of y could be positive or negative.
For example , 
= ± 2 , since -2 x -2 will also give + 4
For y = to be a function , there must be a unique value for y for each value of x , but this is not the case as y could be positive or negative for a single value of x , so it is not a function.
A Prime Number can be divided evenly only by 1, or itself.
<span>And it must be a whole number greater than 1.
</span>Example: 3 can only be divided evenly by 1 or 3, so it is a prime number.
Hi! here’s what i’d put for the sentences to fill in the blanks:
- 1 ten is equal to 10 ones. 1 ten is 10 times the value of 1 one.
- 1 hundred is equal to 10 tens. 1 hundred is 10 times the value of 1 ten.
- 1 thousand is equal to 10 hundreds. 1 thousand is 10 times the value of 1 hundred.
- 1 ten-thousand is equal to 10 thousands. 1 ten-thousand is 10 times the value of 1 thousand.
- 1 hundred-thousand is equal to 10 ten-thousands. 1 hundred-thousand is 10 times the value of 1 ten-thousand.
Place Value Chart:
blank space before 3 is 2
hope this helped!:)
