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Tems11 [23]
3 years ago
5

What is the first step in solving 3a+b=225?

Mathematics
1 answer:
Alex17521 [72]3 years ago
7 0
Writing the equation down
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A man bought a computer on hire purchase by making a down payment of$1500 and twelve monthly payments of $250 each. calculate th
lubasha [3.4K]

Answer:

$4500

Step-by-step explanation:

Given parameters:

   Down payment = $1500

   Monthly payment for twelve months  =$250

Unknown;

Total hire purchase price  = ?

Solution:

To find the total hire purchase price;

  Total hire purchase price  = Down payment + 12($250)

  Total hire purchase price  = $1500 + $3000

  Total hire purchase price  = $4500

7 0
2 years ago
Sherman has two sequences . The first sequence is described by the explicit rule f(n) = 15n + 4 and the second sequence is descr
Viktor [21]

Answer:

Step-by-step explanation:

Given the explicit function as

f(n) = 15n+4

The first term of the sequence is at when n= 1

f(1) = 15(1)+4

f(1) = 19

a = 19

Common difference d = f(2)-f(1)

f(2) = 15(2)+4

f(2) = 34

d = 34-19

d = 15

Sum of nth term of an AP = n/2{2a+(n-1)d}

S20 = 20/2{2(19)+(20-1)15)

S20 = 10(38+19(15))

S20 = 10(38+285)

S20 = 10(323)

S20 = 3230.

Sum of the 20th term is 3230

For the explicit function

f(n) = 4n+15

f(1) = 4(1)+15

f(1) = 19

a = 19

Common difference d = f(2)-f(1)

f(2) = 4(2)+15

f(2) = 23

d = 23-19

d = 4

Sum of nth term of an AP = n/2{2a+(n-1)d}

S20 = 20/2{2(19)+(20-1)4)

S20 = 10(38+19(4))

S20 = 10(38+76)

S20 = 10(114)

S20 = 1140

Sum of the 20th terms is 1140

7 0
2 years ago
238 +439 round you're answer to the. earest dollar​
Paha777 [63]

Answer:

677

Step-by-step explanation:

238 + 439 = 677

It is t possible to round it form the ones (dollar) place.

8 0
3 years ago
Please help fast! Thanks a lot
professor190 [17]

Answer:

92.5

Step-by-step explanation:

Lets say, first number = x


Second number = 3x+7


Total = 49



(x)+(3x+7)= 49


4x+7 = 49


4x = 42


x = 42/4


x= 10.5



x= 10.5


3x+7 = 3(10.5)+7 = 92.5



Hope this helps!!

3 0
3 years ago
Plss answer ill give brainliest pls pls
chubhunter [2.5K]

Answer:

56

Step-by-step explanation:

5x+80=360

5x=280

x=56

8 0
3 years ago
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