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
rosijanka [135]
3 years ago
7

A number is called evil if it has 666 in it. How many 7 digit numbers are evil?

Mathematics
1 answer:
defon3 years ago
5 0

Step-by-step explanation:

There are 5 different positions of 666:

666////

/666///

//666//

///666/

////666

The forward dashes represent any number from 0 to 9.

Case 1: "666////"

Number of ways = 10⁴ = 10,000.

Case 2: The other positions.

Since the 1st forward dash cannot be 0 (leading digit),

Number of ways for each position = 9 * 10³ = 9,000

Number of ways for all 4 positions = 9,000 * 4 = 36,000.

Total evil numbers = 10,000 + 36,000 = 46,000.

You might be interested in
This meal originally costs $75. Fatima used a 20% off coupon and then tax was added. The total after coupon and tax was $75.
Savatey [412]

The discount given on the cost of the meal is $15

<h3>How to calculate tax on a given price</h3>

According to the question, we are given the following information

The original cost of the meal = $75

Off coupon = 20%

Required

The number of coupons given

coupon amount = 0.2 * 75
coupon amount = $15

Hence the discount given on the cost of the meal is $15

Learn more on discounts here: brainly.com/question/24304697

5 0
2 years ago
209 is what percent of 475?​
professor190 [17]

Answer:

44%

Step-by-step explanation:

1) You divide 209 by 475

2) Take 0.44 and move the decimal over 1 place to make <u>44%</u>

8 0
3 years ago
HELP MEEE!! Please evaluating a compound. Inequality using a graph
Irina-Kira [14]

Answer:

\frac{x}{2}

Step-by-step explanation:

From the graph, we can conclude that,

x is less than 2 and not including as there is a hollow circle at the mark 2.

Also, x is greater than or equal to 7 including 7 as there is a solid circle at the mark 7

So, the compound inequality will be x

Now, the option that simplifies to the above inequality is the required answer.

Let us check the first option.

\frac{x}{2}

\frac{x}{2}

Therefore, option 1 simplifies to the above compound inequality.

So, the correct answer is option 1.

6 0
3 years ago
Hi can someone please help me?
marshall27 [118]
Both can be right because if the function goes up, turns and goes down, between x = -2 and x = 2, it can happen that  f(-2) = f(2) and then the average rate of change is [f(2) - f(-2)] / [2-(-2)] which is 0/4 = 0.
4 0
3 years ago
The height of a triangle is 8cm more than the base. If the area is 90cm^2, find the base and the height
Aleonysh [2.5K]
I get the base to be 4.74 and the height to be 12.74
3 0
3 years ago
Other questions:
  • Which of the following expressions is equal to -x2 - 36?
    7·1 answer
  • How do I solve this?
    11·1 answer
  • 2 ( 4 x + 4 ) + 6 ( 2 x + 6 ) + 4 = 20 x + 48 solving for x
    13·1 answer
  • As an aid to the establishment of personnel requirements, the director of a hospital wishes to estimate the mean number of peopl
    11·1 answer
  • X = ?????? Geometry
    7·1 answer
  • Brenda bought a coat for $20. She also paid $1.50 in tax. What kind of tax did Brenda pay on the coat?
    13·1 answer
  • Please help
    12·1 answer
  • 7.
    6·1 answer
  • Write an equivalent expression in word form.<br><br> (1- 1/3) / 2
    13·2 answers
  • The number of girls in Mr. Crock's Algebra class exceeded the number of boys by 6. If there
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!