3 years ago

Twice the difference of a number and 7 equals 5

Mathematics

1 answer:

RideAnS [48]3 years ago

4 0

Hey there!

Let's write an equation given this information. We will use x to represent the number.

2(x-7)=5

Now, we use the distributive property to remove the parentheses.

2x-14=5

Now, we add 14 to both sides.

2x=19

We divide both sides by 2.

x=9.5

Therefore, our number is 9.5

I hope this helps!

You might be interested in

What is the angle of elevation to a building that is 220 feet tall and 410 feet away?

bogdanovich [222]

Answer:

not enogh points

Step-by-step explanation:

4 0

2 years ago

Consider the expression 6n2 + 2n + 3 . What is the coefficient of n?

ad-work [718]

Answer:

Step-by-step explanation:

The coefficient is the number in front of the variable.

So, in this case, the coefficient of n^2 is 6 and of n is 2.

6 0

3 years ago

Find an expression (where you have to multiply polynomials) to represent the shaded region of #33 and if you could also include

Brrunno [24]

First, find the area of the circle using the formula A=pi r^2.
A=pi (2x+3)^2 = pi(4x^2 + 12x + 9)
Second, find the area of the rectangle inside by multiplying the polynomials.
(X+1)*(3x+2) = 3x^2 + 5x +2
Third, subtract the area of the rectangle from the area of the circle to find the area of the shaded region.
pi(4x^2 + 12x + 9) - 3x^2 + 5x +2 =area of shaded region
Or
(pi (2x+3)^2) - ((X+1)(3x+2)) = area of shaded region

4 0

3 years ago

In what quadrant will θ terminate, if sin θ is positive and sec θ is negative?

kow [346]

Sin x is possitive in two quadrants :

quadrant I and quadrant II

in quadrant I, cos x is positive

in quadrant II , cos x is negative

so i think the answer is : quadrant II

hope this helps

5 0

2 years ago

What is the area of the triangle?

hammer [34]

Answer:

Step-by-step explanation:

4 0

2 years ago