What is the value of x in the equation 2x+7=1

Answers

Answer 1

Answer: 2x + 7 = 1

Subtract 7 on both sides

2x = 1 - 7

2x = -6

Divide both sides by 2

x = -6/2

x = -3

Your answer is $\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\bf{x=-3}}}}}}}}}}}}}}}}}}}$

Answer 2

Answer: 2x+7=1 =>2x=1-7 => 2x=-6 => x= -6\2 => x=-3
Have a nice day!! ^^

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Your office is moving into a new space and you have to decide if you want electric heat or natural gas. you have determined that it will take about 4000 kwh per month to heat the space with electricity and currently your electric company charges $0.075 per kwh. the natural gas provider currently charges $1.85 per therm.the conversions you will need are:1 kwh = 3,413 btu; 100,000 btu = 1 therm.

Answers

electric : 4000 kwh per month......at 0.075 per kwh = 4000 * 0.075 = 300 per month

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Gas would be the better deal....because for electric, u r paying 300 per month and with gas, u r paying 252.56 per month

What is the domain of the exponential function f(x) = 3 ^ x - 5

Answers

Answer:

The domain of the exponential function f(x) = 3 ^ x - 5 is (-infinity, infinity)

What is the exponential function?

An exponential function is a mathematical function of the following form: f ( x ) = an x. where x is a variable, and a is a constant called the base of the function. The most commonly encountered exponential-function base is the transcendental number e, which is equal to approximately 2.71828.

What is the exponential function formula?

Exponential Function Formula

An exponential function is defined by the formula f(x) = ax, where the input variable x occurs as an exponent. The exponential curve depends on the exponential function and it depends on the value of the x.

Learn more about Exponential Function at brainly.com/question/12940982

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Answer:

(-infinity, infinity)

Step-by-step explanation:

9. A sector of a circle has central angle $(\pi )/(4)$
and area
$(49\pi)/(8)$

${cm}^(2)$
. Find the radius of the circle

Answers

Answer:

Step-by-step explanation:

Begin with the formula for the area of a sector:

$A=(\theta)/(2\pi)*\pi r^2$ and we are given everything except the radius, r. Filling in what we know:

$(49\pi)/(8)=((\pi)/(4) )/(2\pi)*\pi r^2$ and then start the simplification process. I began by dealing with the fraction over a fraction thing, which simplifies the equation to:

$(49\pi)/(8)=(1)/(8)\pi r^2$ then isolate the r-squared:

$(8(49\pi))/(8\pi)=r^2$ . Canceling out the π's and the 8's leaves us with simply

r² = 49 so

r = 7

Which unit would you use to measure the length of a school bus?inches
cm
m
km

Answers

You would use metres because centimetres and inches are too small a measurement and kilometres are too long a measurement

What can be said about the discriminant of the graph below?

Answers

Answer:

C. The discriminant is negative, so there are no solutions.

Step-by-step explanation:

We see that the given figure is a graph of a parabola.

The equation of the given parabola is $y=(x-3)^(2)+1$ .

Simplifying the equation in quadratic form, we get,

The equation is $y=(x-3)^(2)+1$ i.e. $y=x^(2)+9-6x+1$ i.e. $y=x^(2)-6x+10$ .

We know that the discriminant of a quadratic equation $ax^(2)+bx+c=0$ is given by $D=b^(2)-4ac$

So, from the equation $x^(2)-6x+10=0$ , we have,

a = 1, b = -6 and c = 10

Thus, the discriminant is $D=(-6)^(2)-4* 1* 10$

i.e. $D=36-40$

i.e. $D=-4$

So, the discriminant is -4 i.e. negative.

Hence, as the discriminant is negative, there are no solutions.

Johanna purchases a book for $14.95. There is a sales tax of 6.5%. How much is the final price with tax? What is the total? What is the percent? Use the formula amount = total x percent to find the amount of the sales tax. To find the final price, add the cost of the book to the amount of tax.

Answers

Answer:

Tax = $0.97175

Final Price = $15.92175

Step-by-step explanation:

To calculate the amount of tax of an amount you just must multiply this figure by the percentage of the tax expressed in decimal numbers.

-----------------------------------------------------------------------------------------------

Data:

Price = $14.95

Tax rate = 6.5%

-----------------------------------------------------------------------------------------------

Calculation of tax:

amount = total x percent = $14.95 x 6.5% = $14.95 x 0.065 = $0.97175

Calculation of the final price with tax:

Amount = book cost + tax = $14.95 + $0.97175 = $15.92175

-----------------------------------------------------------------------------------------------

Tax = $0.97175

Final Price = $15.92175

-----------------------------------------------------------------------------------------------

Hope this helps!

Okay so 6.5% of $14.95 is 0.97175. That rounds to 0.97. And to get the total we just add 0.97 to 14.95. Our answer is 15.92. However if you don't want to round then you would add 14.95 and 0.97175 . This would give you15.92175. Hope this helps!

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