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lukranit [14]
3 years ago
10

I need help please :D Here is the question :)

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
4 0

Answer:

The answer is +2

Step-by-step explanation:

r is a variable and a coefficient is a number that comes before the variable or variables. for example, -4x has a coefficient of -4 and 10a is +10

Wittaler [7]3 years ago
3 0

Answer:

2

Step-by-step explanation:

A coefficient is the number before the variable.

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How many times does the digit 7 appear among the terms of the sequence of consecutive integer numbers 7, 8, 9, ...., 777?
Dahasolnce [82]

Answer:

234 times

Step-by-step explanation:

<u>Number of times the number 7 appears in a hundred</u>

7 as units digit (07-17-27 ..... 97): 10 times

7 as tens digit (70-71-72..... 79): 10 times

20 times the digit 7 appears in first one hundred (0-100)

Let's calculate how many times 7 would be as units or tens in 7 hundreds

20X7 = 140 times digit 7 appears until number 699

<u>Now, from 700 to 777</u>

7 as hundreds digit (700-701-702 .... 777): 78 times

7 as tens digit (770-771-772 .... 777): 8 times

7 as units digit (707-717-727....777): 8 times

78 + 8 + 8 = 94 times the digit 7 appears in the range 700 - 777. Plus 140 times

140 + 94 = 234 times

4 0
3 years ago
Read 2 more answers
Find the HCF of 2^120-1 and 2^100-1
zlopas [31]
There may be more brilliant solution than the following, but here are my thoughts.

We make use of Euclid's algorithm to help us out.
Consider finding the hcf of A=2^(n+x)-1 and B=2^(n)-1.

If we repeated subtract B from A until the difference C is less than B (smaller number), the hcf between A and B is the same as the hcf between B and C.

For example, we would subtract 2^x times B from A, or
C=A-2^xB=2^(n+x)-2^x(2^n-1)=2^(n+x)-2^(n+x)+2^n-1=2^n-1
By the Euclidean algorithm, 
hcf(A,B)=hcf(B,C)=hcf(2^n-1,2^x-1)
If n is a multiple of x, then by repetition, we will end up with
hcf(A,B)=hcf(2^x-1,2^x-1)=2^x-1

For the given example, n=100, x=20, so
HCF(2^120-1, 2^100-1)=2^(120-100)-1=2^20-1=1048575
(since n=6x, a multiple of x).

4 0
3 years ago
HURRY PLEASE Use the tally chart to answer the question.
ankoles [38]

Answer:

(0,0)

Step-by-step explanation:

x  y

-2  -8

-1    0

0   0

1   -2

2   0

3  12

3 0
3 years ago
Read 2 more answers
Express 7p+12=3p+11 as an equivalent equation by combining constants
meriva
7p+12=3p+11 \\ \\7p-3p=11-12\\ \\4p=-1 \ \ /:4\\ \\p=-\frac{1}{4}


8 0
3 years ago
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Find the 11th term of the geometric sequence 7, 35, 175,
HACTEHA [7]

Answer:

7*5^10=68,359,375

6 0
3 years ago
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