Answer:
-2 and -8
Step-by-step explanation:
Since the sum of the numbers is negative and the product is a positive, we know that two of the digits are negative because a negative time a negative is positive, and two negatives added are negative.
We can do these two ways.
1.) List out the multiples of 16 and see which ones add to -10
-1 (-16)
-2 (-8)
-4 (-4)
Only -2 and -8 add to get -10, so -2 and -8 are the answers.
2.) List the factors that add up to -10
-1 - 9
-2 - 8
-3 - 7
-4 - 6
-5 - 5
When multiplied, only -2 and -8 have a product of 16, so -2 and -8 are the answers.
Hope this helps. if not, please leave a comment and I will respond when I can. :)
Answer:
r = 5
Step-by-step explanation:
Solving radical equations often results in extraneous solutions. These can be avoided by using a graphing calculator for the solution.
<h3>Graph</h3>
The attached shows that the value of r that makes both sides of the equation have the same value is r = 5.
<em>Check:</em>
√(5·5 -9) -3 = √(5 +4) -2 ⇒ 4 -3 = 3 -2 . . . true
<h3>Analytical solution</h3>
Solution of an equation like this is typically done by isolating the radical expressions, then squaring the equation.
We can add 3, square the equation, then isolate the radical and square again:
Trying these values in the original equation, we get ...
√((5(9/4) -9) -3 = √(9/4 +4) -2 ⇒ 1.5 -3 = 2.5 -2 . . . . . false
√(5(5) -9) -3 = √(5 +4) -2 ⇒ 4 -3 = 3 -2 . . . . . true
The solution is r = 5.
Answer:
9/5
Step-by-step explanation:
The common difference = 6 - 2 = 4
The age after 6 is 6 + 4 = 10 = y
The age after 14 is 14 + 4 = 18 = z
z/ y = 18/10 = 9/5
By adding two positives together, or a big positive number with a small negative number.
Answer:
Yes because they have the same slope of 3/2
Step-by-step explanation:
The slope of PQ is ...
(10 -7)/(2 -0) = 3/2
The slope of RS is ...
(8 -5)/(0 -(-2)) = 3/2
The slopes are the same (3/2), so the lines are parallel.
