Answer:
the first one
Step-by-step explanation:
multiply by 4 subtract 2
Answer:
a. 2
b. 4
c. 13
Step-by-step explanation:
The general term of an arithmetic progression is ...
an = a1+d(n-1)
where a1 is the first term, and d is the common difference.
The sum of n terms is ...
Sn = n(2a1 +d(n -1))/2
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The given relations tell us ...
S10 = 10(2a1 +9d)/2 = 10a1 +45d = 130
and
a5 = 3a1
a1 +4d = 3a1
4d = 2a1
2d = a1
Using this in the equation for S10 above, we have ...
10(2d) +45d = 130
d = 130/65 = 2
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(a) The common difference is 2.
d = 2
__
(b) The first term is a1 = 2d = 2(2)
a1 = 4.
__
(c) an = 28 = 4 +2(n -1)
24 = 2(n -1)
12 = n -1
13 = n
The 13th term is 28.
72-54 =2a
A=9
A+54= 3a+b
63=3a+b
63= 3(9) +B
B=36
A+B =C
9+36=45
C=45
A+2C=4a+2D
9+ 2(45) = 4(9) + 2D
63=2D
D=31.5
A+D=F
9+31.5=F
F= 40.5
First, we know that it is 2017 so:
2017-2001=16 years
Put that into the equation:
C= 2,000(1.1)16
Find out the answer...
What you should have got was 35,200 and that, is the total off the tuition since 2001. Since we need to know what the tuition cost was in 2001 we:
Divide: 35,200/16 =2,200
Answer is: The tuition cost in 2001 was $2,200.
Answer:
The x intercept is 3
(3,0)
Step-by-step explanation:
3x+y -9 =0
To find the x intercept, set y=9 and solve for x.
3x+0-9=0
3x -9=0
Add 9 to each side
3x-9+9=9
3x =9
Divide by 3
3x/3 = 9/3
x =3
The x intercept is 3
(3,0)