Y=2x + 15
y = 11-x
In order to solve for y add/subtract the x terms to the other side
Answer:
BC ≈ 98.95 feet
Step-by-step explanation:
From the figure attached,
A shark is swimming 42 feet below sea level at point A and a boat on the water is at point C.
If the angle of depression from the coat to shark is 23°,
tan(23°) =
tan(23°) =
BC =
BC =
BC = 98.947
BC ≈ 98.95 feet
Answer: B
Step-by-step explanation:
first write t in terms of x
x = 7t - 3
7t = x+3
t = x/7 + 3/7
plug into y
y = 5t+1
y = 5x/7 + 15/7 + 7/7
y = 5x/7 + 22/7
so your answer is B
So, "one third of remaing" is 21, this means that the "remaining" was three times as much: 21*3=63
This 63 is the 30 % of all the people, since they are the remaining of 100-70%.
so: 63=30/100x
we now multiply both sides by 100:
6300=30x
and divide by 30:
210
so all the people at the fair numbered 210!
They are usually represented like this
commutative property of addition
a+b=b+a
associative property of additon
(a+b)+c=a+(b+c)
identity property of addition
a+0=a
so number sentatnces
lets say a=1,b=2,c=3
commutative property of addition
1+2=2+1
associative property of addition
(1+2)+3=1+(2+3)
identity property of addition
1+0=1