All categories

2 years ago

2(x + 4) − 1 = 2x + 7

Mathematics

2 answers:

Margarita [4]2 years ago

7 0

Answer:

All real numbers are solutions to this problem.

Step-by-step explanation:

I) Simplify:

2(x + 4) - 1 = 2x + 7

x + 4 - 0.5 = x + 3.5 (Divide by 2)

x + 3.5 = x + 3.5 (Simplify <em>x + 4 - 0.5</em>)

x = x

II) Conclusion:

Any real number will work as a solution.

madreJ [45]2 years ago

5 0

True for all x

2x+7=2x+7
-7 -7
2x = 2x
-2x -2x
0=0

maybe that seems right

You might be interested in

Does anybody know this? I need some help

aksik [14]

Answer:

hay multiplocalo y bxa no se ingles solo español

6 0

2 years ago

Read 2 more answers

Cookies are sold singly or in packages of 3 or 9. With this packaging, how many ways can you buy 18 cookies?

zvonat [6]

6 packs of 3
2 packs of 9
3 packs of 3, 1 pack of 9

answer: 3 ways

4 0

3 years ago

Read 2 more answers

Write the equation of the line passing through points ( -2,-5) and (1,1)

Dennis_Churaev [7]

Answer:

The equation of the line is:

$y=2x-1$

Step-by-step explanation:

Given the points

(-2, -5)

(1, 1)

Finding the slope between the points

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(-2,\:-5\right),\:\left(x_2,\:y_2\right)=\left(1,\:1\right)$

$m=\frac{1-\left(-5\right)}{1-\left(-2\right)}$

$m=2$

We know the slope-intercept form of the line equation

$y=mx+b$

where m is the slope and b is the slope-intercept form

substituting the value m=2 and the point (-2, -5) to find the b-intercept

$y=mx+b$

-5 = 2(-2) + b

b = -5+4

b = -1

Now, substituting m=2 and b=-1 in the slope-intercept form to get the equation of a line

y=mx+b

y=2x+(-1)

y=2x-1

Thus, the equation of the line is:

$y=2x-1$

8 0

2 years ago

How many primes are between 2^31 and 2^32? What is the approximate ratio of primes to

PIT_PIT [208]

Answer:

Step-by-step explanation:183

3 0

3 years ago

Find the area of a circle whose area equals the half of the sum of the areas of two circles with radil 2 and 3.

OlgaM077 [116]

Step-by-step explanation:

step 1. a circle with r = 2 has area of (pi)r^2 = (pi)(4) = 4pi

step 2. a circle with r = 3 has area of (pi)r^2 = (pi)(9) = 9pi

step 3. the area, A, of a circle is half the sum of the area of the circles with r = 2 and r = 3

step 4. A = (4pi + 9pi)/2 = 13pi/2 = 6.5(pi).

step 5. the answer is not 6.5 but is 6.5(pi) or 6.5 times pi.

8 0

2 years ago