A computer is programmed to scan the digits of the counting numbers. For example, if it scans 1 2 3 4 5 6 7 8 9 10 11 12 13 then it has scanned 17 digits altogether. If the computer begins its task and scans the first 1392 digits starting at 1, what is the last counting number scanned?
Answers
I believed it is "401"
1-9 = 9 digits
10-99 = 90 which is 180
100-200 = 100 which is 300 digits
9+180= 189
1392-189= 1203
1200÷300=400 which 1200 digits
401 is the 1392 number scanned
Related Questions
Please help :) :) :)
Write the inequality;Eight less than a number is greater than 0 and less than or equal to 1.
20% of a number is x. What is 100% of the number?Assume x > 0.
10/25is it equivalent to0.4
A.
3 tomatoes per teaspoon of salt
B.
6 tomatoes per teaspoon of salt
C.
18 tomatoes per teaspoon of salt
D.
108 tomatoes per teaspoon of salt
Answers
The unit rate for the situation is 3 tomatoes per teaspoon of salt.
The equation of a straight line is given by:
y = mx + b;
where m is the slope of the line, b is the y intercept and y, x are variables.
y represent the number of tomatoes added and x represent the number of teaspoon of salt.
Given the equation of the line is: y = 3x
The unit rate of the graph is equal to the slope of the graph (i.e. 3). Hence:
The unit rate for the situation is 3 tomatoes per teaspoon of salt.
Find out more at: brainly.com/question/13911928
For this case, the first thing you should keep in mind is that the generic equation of the line is:
Where,
m: slope of the line or rate of cam.
b: cutting point with vertical axis.
We note that for this case, the equation of the line is:
Therefore we have:
This means that 3 tomatoes are added for each teaspoon of salt.
Answer:
A. 3 tomatoes per teaspoon of salt
A. 1/5
B. 1/15
C. 1/25
D. 1/125
2.15^0=?
A. 0
B. 1
C. 15
D. 1/15
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Answers
Also you could set up the proportion 7/100 = x/120 and solve for x.
120=100%
x= 7 %
cross-multiply
100x= 120*7
100x= 840
x= 840/100
x= 42/5
x= 8.4
Therefore 7% of 120 is 8.4
I hope that's help !
Answers
Answer:
Step-by-step explanation:
the fewest number you would have to answer to get 350 would be 25.
to get the fewest number you would not be able to miss any before reaching 350 points. since you are aiming for a minimum of 350 points and you start out with 100 you would divide 250 by 10 to get 25
Check all that apply.
2x2 +9x + 4 = 0
Answers
Answer:
Step-by-step explanation:
Use quadratic formula:
x=((-b+-sqrt(b^2-4ac))/2a
x=((-9+-sqrt(9^2-4(2)(4))/2(2)
x=((-9+-sqrt(81-32))/4
x=((-9+-sqrt(49))/4
x=(-9+-7)/4
Solution 1:
x=-2/4
x=-1/2
Solution 2:
x=-16/4
x=-4
Now we check:
2(-1/2)^2+9(-1/2)+4=2/4+-9/2+4=1/2+-9/2+4=-8/2+4=-4+4=0 (x=-1/2 works)
2(-4)^2+9(-4)+4=2(16)+(-36)+4=32-36+4=-4+4=0 (x=-4 works)
So the solutions of the equation are x=-1/2 and x=-4
in this case
a=2 b=9 c4
for this equation we have the formula
x1/2 = (-b +- (root of) b2 -4ac) /2a
x1/2 = (-9 +- (root of) 81- 4×2×4)/2×2
x1/2= (-9 +- (root of) 81-32)/4
x1/2 = (-9 +- (root of) 49/4
x1/2 = (-9 +- 7)/4
x1= -9+7/4
x1=-2/4
x1=-1/2
x2= -9-7/4
x2= -16/4
x2= -4
(2x^{2} - 5x + 3) - (-x^{2} + 4x - 5)
Answers
Answer:
3x^2 - 9x + 8
Step-by-step explanation:
To simplify:
- Distribute the -1 into the second term.
- Collect and combine like-terms (terms with the same variables or powers)
The expression can be rewritten has (2x^2 - 5x + 3) -1(-x^2 + 4x - 5)
After distributing the -1, the equation becomes:
- (2x^2 - 5x + 3) + (x^2 - 4x + 5)
The like-terms are:
- 2x^2 and x^2
- -5x and -4x
- 3 and 5
Combine the like-terms:
- 2x^2 + x^2 = 3x^2
- -5x - 4x = -9x
- 3 + 5 = 8
Substitute the simplified like-terms into the expression, in descending order:
- 3x^2 - 9x + 8