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Sliva [168]
2 years ago
8

7x + 1 = x + 7 whats the answer

Mathematics
2 answers:
JulijaS [17]2 years ago
8 0

Answer:

x=1

Step-by-step explanation:

7x+1=x+7

7x-1=x+6

7x=-x+6

-x

6x=6

6x/6=6/6

x=1

Gnoma [55]2 years ago
4 0

7x + 1 = x + 7

7(1) + 1 = 8

1 + 7 = 8

If you substitute 1 for x, the statement is true. Therefore, x = 1.

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The quotient of a number and -7 and decreased by 2 is 10 find the number
qwelly [4]

Answer:

Step-by-step explanation:

-\frac{n}{7}-2=10\\ \\ -\frac{n}{7}=12\\ \\ n=-84

6 0
2 years ago
Mops
Ipatiy [6.2K]

Answer:

270

Step-by-step explanation:

For any arithmetic sequence

nth term is given by

nth term = a + (n-1)d

where a is first term,

d is common difference

d is given by nth term - (n-1)th term

sum of n terms given by

sum = n/2(2a + (n-1)d)

________________________________________________

Given arithmetic sequence

-2,0,2,4,6,8...

first term a = -2

lets take third term as nth term and second term as (n-1)th term to find common difference d.

d = 2 - 0 = 2

using a = -2 , d = 2, n = 18

thus, sum of first 18 terms = n/2(2a + (n-1)d)

                                           =18/2( 2*(-2) + (18-1) 2)

                                           =9 ( -4 + 34)

                                           =9 ( 30) = 270

Thus, sum of first 18 terms is 270.

7 0
2 years ago
Which is a number that can be written as a fraction in the form ?
Scilla [17]

Rational Numbers: Any number that can be written in fraction form is a rational number. This includes integers, terminating decimals, and repeating decimals as well as fractions. An integer can be written as a fraction simply by giving it a denominator of one, so any integer is a rational number.

Hope this helps!

3 0
3 years ago
Using the Quadratic Formula: x = −b ± b2− 4ac√2a solve for the following Quadratic trinomial: x2−10x + 4.75 Explain each step: 1
VashaNatasha [74]

Answer:

hi your answer is in the image

3 0
3 years ago
П
olga_2 [115]

Answer:

p = 40

Step-by-step explanation:

20/6 = p/12

20 × 12 = 6 × p

240 = 6p

p = 240/6

p = 40

3 0
3 years ago
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