Remember x is x and f(x) is same thing as y.
f(5) = 4
It is same thing as saying, when x = 5, y aka f(x) should be 4. Aka the point (5,4)
Let’s look at D, if x =5 then f(x)=5? No, it should equal 4. So this is wrong. It is also not linear. So NOT D
Lets look at C, if x =5 then
1/5(5)+3 =
5/5 + 3 =
1+3 =
4
So, f(x) aka y = 4. Is this correct? Yes when x =5, y indeed should equal 4, but it is not linear. So NOT C
Lets look at B, if x=5 then,
2^5 -28 =
32 - 28 =
4
So, f(x) aka y = 4. Is this correct? Yes when x =5, y indeed should equal 4, AND it is linear SO THE ANSWER IS B
Check A too, it gets y=14 so thats wrong as it is not 4.
C/4 - 2c = 5/4 - c/2......multiply everything by 4
c - 8c = 5 - 2c
-7c = 5 - 2c
-7c + 2c = 5
-5c = 5
c = -5/5 = -1
Kilo, for kilogram is the best to use for easuring the mass of a person. 1 Kilogram (Kg) = 1000 grams. For example, I have 60 kilograms (132.27 pounds).
Mili is used for very small quantities (Mili = 1/1000 grams). Deci = 1/10 grams and deca 10 kilograms = 10.000 grams. Good luck !
Answer:
Step-by-step explanation:
Formula for circumference = 2πr
where r = radius
π = 3.14
10. Radius = 4in
Circumference = 2πr = 2 × 3.14 × 4
= 25.12in
11. Radius = 7 yard
Circumference = 2πr = 2 × 3.14 × 7
= 43.96 yard
12. Radius = 3.6 km
Circumference = 2πr = 2 × 3.14 × 3.6
= 22.608 km
13. Radius = 1.1mm
Circumference = 2πr = 2 × 3.14 × 1.1
= 6.908mm
14. Radius = 1/4mi
Circumference = 2πr = 2 × 3.14 × 0.25
= 1.57mi
Answer:
1) 2
2) 4
3) 8
Step-by-step explanation:
You must apply the following formula:
Substitute value, then you obtain:
x=1 and x=2
x=2 and x=3
x=3 and x=4
