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elena-14-01-66 [18.8K]
3 years ago
11

This is a number system which uses a base of 10. The valid digits are 0 to 9.

Mathematics
2 answers:
RSB [31]3 years ago
8 0

Answer:

Decimal system

Step-by-step explanation:

The present system in Mathematics we use for representing numbers is a system which uses a base of 10.

We write 0 to 9 then next value we shift the digit from units to 10th place and write as 10.  Thus we use only digits form 0 to 9, and place values for digits from right are

10^0, 10^1, 10^2,....

For less than 1 we use decimals and use place values from right to left as

10^{-1} ,10^{-2} ,10^{-3} ...

Thus the system we use now is decimal system which has base 10.

Licemer1 [7]3 years ago
7 0
I think it's 9 but I could be wrong
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What is the quadratic equation of x2 - 7x + 6 = 0
s2008m [1.1K]

Answer:

x = 6 , 1

Step-by-step explanation:

7 0
2 years ago
The diameter of a tire is 2.5 ft. Use this measurement to answer parts a and b. Show all work to receive full credit
Alla [95]

Answer:

The answer is below

Step-by-step explanation:

The diameter of a tire is 2.5 ft. a. Find the circumference of the tire. b. About how many times will the tire have to rotate to travel 1 mile?

Solution:

a) The circumference of a circle is the perimeter of the circle. The circumference of the circle is the distance around a circle, that is the arc length of the circle. The circumference of a circle is given by:

Circumference = 2π × radius; but diameter = 2 × radius. Hence:

Circumference = π * diameter.

Given that diameter of the tire = 2.5 ft:

Circumference of the tire = π * diameter = 2.5 * π = 7.85 ft

b) since the circumference of the tire is 7.85 ft, it means that 1 revolution of the tire covers a distance of 7.85 ft.

1 mile = 5280 ft

The number of rotation required to cover 1 mile (5280 ft) is:

number of rotation = \frac{5280\ ft}{7.85\ ft\ per\ rotation}=672\ rotations\\\\\\

4 0
3 years ago
Read 2 more answers
HELP ME PLEASEE
Nina [5.8K]

Answers:

x = -8/5 or x = 8/5

Sum of the first ten terms where all terms are positive = 4092

========================================================

Explanation:

r = common ratio

  • first term = 4
  • second term = (first term)*(common ratio) = 4r
  • third term = (second term)*(common ratio) = (4r)*r = 4r^2

The first three terms are: 4, 4r, 4r^2

We're given that the sequence is: 4, 5x, 16

Therefore, we have these two equations

  • 5x = 4r
  • 4r^2 = 16

Solve the second equation for r and you should find that r = -2 or r = 2 are the only possible solutions. If r = -2, then 5x = 4r solves to x = -8/5. If r = 2, then 5x = 4r solves to x = 8/5.

-----------------

To find the sum of the first n terms, we use this geometric series formula

Sn = a*(1 - r^n)/(1 - r)

We have

  • a = 4 = first term
  • r = 2, since we want all the terms to be positive
  • n = 10 = number of terms to sum up

So,

Sn = a*(1 - r^n)/(1 - r)

S10 = 4*(1 - 2^10)/(1 - 2)

S10 = 4*(1 - 1024)/(-1)

S10 = 4*(-1023)/(-1)

S10 = 4092

8 0
2 years ago
The length of a rectangle is four more than triple the width. if the perimeter is 120 inches, find the dimensions.
mezya [45]
120/2=60 (sum of both lengths)
4x+4=60
4x=56
x=14

length=46
width=14
5 0
2 years ago
Tommy and his wife went to the store and bought groceries there's some total was $143.50 if the sales tax was 8% what was the to
Nutka1998 [239]

Answer:

154.98

Step-by-step explanation:

* means multiplication

143.50*.08=11.48

143.50+11.48=$154.98

6 0
3 years ago
Read 2 more answers
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