Answer:
$29.72
Step-by-step explanation:
$120.21-$90.49=$29.72
The correct answer will be 3.
Why?
If v = m + 3 what is m?
Well it's says that D = m/v and D = 3/6.
So if M is 3, what number can you add my 3 that is gonna equal to V (6).
3 + 3 = 6 and that's how I got my answer.
The expression: sqrt ( 5 x² - 27 x + 10 )
A real number is a square root of a positive number.
x 1/2 = ( 27 +/- sqrt ( 729- 200 )) / 10
x 1/2 = ( 27+/- 23 ) / 10
x 1 = 4/10 = 0.4
x 2 = 50/10 = 5
Answer:
The expression is defined as a real number for:
x ∈ ( - ∞, 0.4 ] ∪ [ 5, + ∞ ).
Answer:
A: 540
Step-by-step explanation:
The scale factor makes each side length 6 times longer. Area = width * length, these are both multiplied by 6 so the area actually is 36 times bigger.
15 * 36 = 540
Answer:
44
Step-by-step explanation:
Let's say that Devaughn's age is D, and Sydney's age is S.
We know that D is 7 greater than S, so D = 7 + S.
We know that the sum of their ages, or D + S, is equal to 95, so D+S = 95
We have
D = 7 + S
D + S = 95
What we can do is plug D= 7 + S into the second equation to get
D + S = 95
= (7+ S) + S
= 7 + 2 * S
7+2 * S - 95
subtract 7 from both sides to isolate the coefficient and the variable
2 * S = 88
divide both sides by 2 to isolate the variable
S = 44
Sydney is therefore 44 years old