Answer:
15. Substitution
16. B and C are true
17. A and C are true
Step-by-step explanation:
A bird has only 2 legs, and a dog has 4 legs.
x=number of birds
y=number of dogs
We can susggest this system of equations:
x+y=18
2x+4y=50
We can solve this system of equations by substitution method.
x+y=18 ⇒ y=18-x
2x+4(18-x)=50
2x+72-4x=50
-2x=50-72
-2x=-22
x=-22/-2
x=11
y=18-x
y=18-11
y=7
Answer: we have 11 birds and 7 dogs.
Answer:
=2.5×10^-5
Step-by-step explanation:
it's 0.00025
The square root of 64 is greater than the square root of 25; (square root sign) 64 > (square root sign) 25
Answer:
c. start fraction 5 over 6 end fraction
Step-by-step explanation:
there are six numbers on a cube
1, 2, 3, 4, 5, 6
there are 5 other numbers other than 6
5/6
5 = other than 6
6 = total numbers