The number of integers from 100 to 900 that can be written in base ten without using the digit 7 is 648.
From 100 to 999, all integers are three (3) digit numbers and available digits are (0, 1, 2, 3, 4, 5, 6, 7, 8, 9).
It implies that the total number of digits is 9. The next thing to do will be to arrange the 9 digits in three (3) places in such a way that repetition is allowed.
In the first place;
- the number of ways the number can be positioned since it can't be zero and seven = 8.
Hence, the first chance is 8 out of 10 chance.
In the second and third place;
∴
The number of integers from 100 to 900 that can be written in base ten without using the digit 7 is:
= 8 × 9 × 9
= 648
Therefore, the number of integers from 100 to 900 that can be written in base ten without using the digit 7 is 648.
Learn more about integers here:
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Answer:
y=-2
x=4
Step-by-step explanation:
4x+y=14
x-2y=8 then x=8+2y
substitute for x in 4x+y=14
4(8+2y)+y=14
32+8y+y=14
reduce
32+9y=14
32+9y-32=14=32
9y=-18
9y/9=-18/9
y=-2
x=8+2(-2)=4
Answer:
.21 cents
Step-by-step explanation:
To get .21 do 1.68 divided by 8
1.68 ÷ 8 = .21
Hope this helps ya!!
Performing the inverse calculation of the relationship between units, we obtain that 1 pound is 0.027777778 times 576 ounces.
in which the answer Is36
Answer:
W = 11340 J
Step-by-step explanation:
Given,
Force ( F ) = 567 N
Distance ( s ) = 20 N
To find : Work done ( W )
Formula : -
W = Fs
W = 567 x 20
W = 11340 J
Hence,
the amount of work done is 11340 J.
