Most of these problems are the commutative property:
Addition
a + b = b + a
Multiplication
a * b = b * a
and the associative property:
Addition
(a + b) + c = a + (b + c)
Multiplication
(a * b) * c = a * (b * c)
There's also the Identity property:
Addition \ Subtraction:
a + 0 = a \ a - 0 = a
Multiplication \ Division:
a * 1 = a \ a / 1 = a
Answer:
He worked 7.5 hours
Step-by-step explanation:
Let's set up an equation!
125 = 14x + 20.
We are trying to find x!
Let's subtract 20 on both (maintain equality) sides
105 = 14x
Now let's divide both(maintain equality) sides by 14 to get!
x = 7.5
Let's check!
125 = 14 * 7.5 + 20
125 = 105 + 20
125 = 125 YES
So, x = 7.5
Answer:
3/5
Step-by-step explanation:
Firstly we will substitue x = 0 and we will realise that we have 0 in denominator. we will use Lhopitals rule.
We are looking for the hypotenuse in this right triangle. The reference angle is 41 degrees. We have that angle and the side that is opposite that angle, 22, so the trig identity that we will use that relates the side opposite to the hypotenuse is sin. Our ratio would be set up like this:
. Solving for xy we will have
, choice D from above.
Answer:
273.6
Step-by-step explanation:
11.4% of his daily calories intake is from sugar drink.
If he consumes 2400 calories each day , the amouth that comes from sugar drink will be 11.4% /100% x 2400
0.114 x 2400
273.6
So 273.6 calories comes from sugar drinks