The problem asks:
what is 2y+7 when y=-3?
Since y=-3 then 2y+7=2(-3)+7=-6+7=1.
Similarly, when y=-3, -4y − 10=<span>-4(-3) − 10=12-10=2.
Answer:
</span><span>2y + 7=1
-4y − 10=2</span>
Answer:
Please see below.
Explanation:
The coordinates of point C are (a+b,c).
The coordinates of the midpoint of diagonal ¯¯¯¯¯¯AC are (a+b2,c2).
The coordinates of the midpoint of diagonal ¯¯¯¯¯¯BD are (a+b2,c2).
¯¯¯¯¯¯AC and ¯¯¯¯¯¯BD intersect at point E with coordinates (a+b2,c2).
By the definition of midpoint, ¯¯¯¯¯¯AE≅¯¯¯¯¯¯CE and ¯¯¯¯¯¯BE≅¯¯¯¯¯¯DE.
Therefore diagonals ¯¯¯¯¯¯AC and ¯¯¯¯¯¯BD bisect each other.
Hi!
If I have done this correctly, then the answer is:
2 million is 80% of 2.5
That means that 20% of the water evaported.
A couple of rules to review:
#1). Ln(the square root of a number) = 1/2 Ln(the number)
and
#2). e^(Ln of a number) = the number
Now we're all set to solve this thing.
=======================================
<u>Ln( square root of(x+2) ) = 3</u>
From Rule #1: 1/2 Ln (x+2) = 3
Multiply each side by 2: Ln (x+2) = 6
From Rule #2: (x + 2) = e^6
(x + 2) = 403.43 (rounded)
Subtract 2 from each side: <em> x = 401.43</em> (rounded)
Answer:
Step-by-step explanation:
Let r represent the number of rabbits the farmer has. Then 45-r is the number of chickens. The total number of legs is then ...
4r +2(45-r) = 140
r +45 = 70 . . . . . . . . divide by 2 and simplify
r = 25 . . . . . . . . . the number of rabbits
45 -r = 20 . . . . . the number of chickens
The farmer has 20 chickens, and 25 rabbits.
