1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kodGreya [7K]
2 years ago
11

What is the ones digit of a number if its cube ends in 7

Mathematics
1 answer:
Ostrovityanka [42]2 years ago
3 0

Well, I have never seen a question posed this way, but let's check it out by trial and error.

1^3 = 3

2^3 = 8

3^3 = 27 Hey! There's one. And the ones digit ends in 3.

Let's try another number that ends in 3 and see if it works as well.

13^3 = 2197 Wow. It works again. I never noticed this before, so you taught me something new.

I will test one more.

33^3 = 35937 Bingo. I think we have a winner.

You might be interested in
Peter threw the football 72 feet. How many yards did he throw the football ?
Darya [45]

1 yard = 3 feet.

Divide total feet by 3 to get yards:

72 feet / 3 = 24 yards.

3 0
3 years ago
|x+10| / 9 &lt; 2<br><br> Solve the inequality, show step by step
Lerok [7]

Answer:x=8

Step-by-step explanation:

3 0
2 years ago
This figure is made up of a rectangle and parallelogram.
ivann1987 [24]

The area of the figure is 40 units. (rounded off from 39.998 units)

Step-by-step explanation:

1. Area of the figure = Area of Rectangle + Area of Parallelogram.

2. Naming points:

Let the rectangle consist of points A(-6,-1), B(-5,-5), C(3,-3) and D(2,1).

Let the parallelogram consist of points C(3,-3), D(2,1), E(2,7) and F(3,3).

3. Each coordinate has a point on the x-axis and a point on the y-axis. We shall refer to these points as x', x'' ,x''' and so on corresponding to the x-axis values of A, B, C and so on in that order till F. For the y-axis points, we will name them in the series of y', y'', y''' and so on.

In simple words, in A(-6,1), x' = -6; y' = -1

4. Formula for finding area:

Area of a rectangle = length (l) × width (w)

Area of a parallelogram = base (b) x height (h)

5. Finding area of the rectangle:

l = AD = \sqrt{[x'''' - x']^{2} - [y'''' - y']^{2}}

, i.e. AD = \sqrt{[2 - (-6)]^{2} - [1 - (-1)]^{2}}

, i.e. AD = √68 = 8.246 (rounded to 3 decimals) = l

Now, w = AB = \sqrt{[x'' - x']^{2} - [y'' - y']^{2}}

, i.e. AB = \sqrt{[(-5) - (-6)]^{2} - [(-5) - (-1)]^{2}}

, i.e. AB = √17 = 4.123 (rounded to 3 decimals) = w

Area of rectangle = l x w = 8.246 x 4.123 = 33.998 units.

6. Finding area of the parallelogram:

b = DE = 6 units (we can observe this from the graph, i.e. points from 1 to 7 on the y axis)

h = Height is the line drawn perpendicular to the base from point F, which as we can see is 1 unit long.

Hence, Area of parallelogram = b x h = 6 x 1 = 6 units.

7. Now, adding both, we can arrive at the final answer.

Area of the figure = Area of rectangle + Area of parallelogram,

i.e. 33.998 units + 6 units = 39.998 units. (can be rounded off to 40 units)

4 0
2 years ago
What is the opsilute value for 27/90 and 100/99
belka [17]

Answer:

3 /10

Decimal Form:

0.3

Step-by-step explanation:

7 0
2 years ago
(this is 6th grade math) please help​
madam [21]

Answer:

c

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Dwayne earns $11.45 per hour.Last week he worked 38 1/4 hours.how much did he earn last week?
    13·2 answers
  • The price of a certain stock fell$2 each day for 4 consecutive days. Write an expression that you could use to find the change i
    13·2 answers
  • Point O lies between points M and P on a line. OM=34z and OP=36z-7. If point N is the midpoint of line MP, what algebraic equati
    14·1 answer
  • What is the answer to this equation<br> PLEASE HELP<br><br> 2-9=?
    7·1 answer
  • Determine the vertex by completing the square. Show process.<br><br> y = x2 -6x + 22
    8·1 answer
  • The sum of two numbers is -3 and the difference of the two numbers is 11?
    10·1 answer
  • If Hannah can drive 20 miles in 4 minutes, what is her unit rate in miles per minute?
    12·1 answer
  • Given f(x)= x-3 and g(x)= 2x+1<br> Find (fºg) (-10)
    15·1 answer
  • 2x+5y =-20, 2x-3y=28
    8·2 answers
  • Can someone help me on this math question?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!