1.a)add
B) substract
C) multiply
D) one
2) 1002=1.002×10^3
3)2.8×10^-3 < 2.5×10^-2 < 1.2×103 <4×103
Answer:
x = /3
Step-by-step explanation:
In a 30-60-90 triangle, the longer leg is times the shorter leg.
So, x =
x = / = /3
Answer:
The minimum of cows he needs are: 2
Step-by-step explanation:
There's a relation between each animal:
5 chickens equals 1 pig
3 pigs equals 2 sheep
5 sheep equals 2 cows
You can understand it as the following three abstractions:
5c = 1p (1)
3p = 2s (2)
5s = 2o (3)
Where:
c is for chickens
p is for pigs
s is for sheep
o is for cows
So now you have three equations with 4 variables. The next step is to obtain an equation that relates directly the variable c (chickens) with the variable o (cows). In order to do that from the equation 2 we obtain s in terms of p, as follow:
Then we replace s in the equation 3 and we obtain v in terms of p:
Now we replace v in the equation 1:
(4)
The equation 4 means that 1 chicken equals the fifteenth part of a cow. For this case the farmer needs 20 chikens, so we multiply per 20 each part of the equation 4:
As it is impossible to have 1.3333 cows, the answer is 2 cows approximately.
Answer:
60 degrees
Step-by-step explanation:
Cos of 60 is 1/2, unit circles helps with this.
You can think of the absolute value as the distance from 0.
10 and -10 are both 10 units away from 0.