Solve the equation: x^2 - 6x = 7

A. x = 7 , 1
B. x = -7 , 1
C. x = 7 , -1

Answers

Answer 1

Answer: x^2 - 6x = 7
(x - 7)(x + 1)= 0
x = 7, - 1

The answer is: x = 7, -1.

Answer 2

Answer:

Answer:

${x}^(2) - 6x = 7 \n {x}^(2) - 6x - 7 = 0 \n {x}^(2) + x - 7x - 7 = 0 \n x(x + 1) - 7(x + 1) = 0 \n (x + 1)(x - 7) = 0 \n \boxed{x = - 1} \n \boxed{ x = 7}$

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(b-1)2+2a; use a=6, and b=1

Answers

um i’m gonna go with 14 bc (1-1) is 0 and then 2+2(6) is 14. i could be wrong sorry

Multiply and simplify.
3x-3/x^2-1* (x+2)(x+1)/x-1

Answers

Hello,

If x≠1 and x≠-1 then

$(3x-3)/(x^2-1)*((x+2)(x+1))/(x-1)=(3(x-1))/(x-1)*((x+2)(x+1))/((x-1)(x+1))\n=(3(x+2))/(x+1)$

17) Eli packed 1,920 peanuts into 8 sacks. He packed an equal number of peanuts in each sack. How many peanuts did he pack into each sack?

Answers

Answer:

240

Step-by-step explanation:

you have to divide 1,920 by 8

From midnight to 6:00 am, the temperature rose 1.05°C each hour. If the temperature at 6:00 am was -5.7°C, what was the temperature at midnight?

Answers

Answer:

13.2 C

Step-by-step explanation:

6am the temp is at -5.7

from 6am to 12pm is 18 hours apart

so if the temp rises at 1.05 every hour you multiply 1.05*18= 18.9

18.9-5.7=13.2

If 115% of a number is 460, what is 75% of the number?Please explain the work behind the solution

Answers

In linear equation, 300 is 75% of the number.

What are instances of linear equations?

Ax+By=C represents a two-variable linear equation in its standard form. A standard form linear equation is, for instance, 2x+3y=5.
Finding both intercepts of an equation in this form is rather simple (x and y).
When resolving systems of two linear equations, this form is also incredibly helpful.

115% of a number is 460,

let number is x .

x = 460/115 * 100

46000 / 115 = x

x = 400

400 * 75/100 = 300

Learn more about linear equation

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460 / 1.15 = x

x * 0.75 = your answer

x = 400

400 * 0.75 = 300

29 + _ = 1000

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