All categories

3 years ago

Ms. Medina asked the class to solve the equation 2(x+4)=18.

Mathematics

2 answers:

7nadin3 [17]3 years ago

4 0

Answer:

PEMDAS parentheses exponents multiplication divide add subtract....

rewona [7]3 years ago

3 0

Answer:

The distributive property

Step-by-step explanation:

He distributed 2 * x and 2 * 4 to get 2x +8

You might be interested in

Let the region R be the area enclosed by the function f(x)=ln(x) and g(x)= 1/2x-2. Find the volume of the solid generated when t

Neporo4naja [7]

Answer:

$V=61.66$

Step-by-step explanation:

This problem can be solved by using the expression for the Volume of a solid with the washer method

$V=\pi \int \limit_a^b[R(x)^2-r(x)^2]dx$

where R and r are the functions f and g respectively (f for the upper bound of the region and r for the lower bound).

Before we have to compute the limits of the integral. We can do that by taking f=g, that is

$f(x)=g(x)\\ln(x)=\frac{1}{2}x-2$

there are two point of intersection (that have been calculated with a software program as Wolfram alpha, because there is no way to solve analiticaly)

x1=0.14

x2=8.21

and because the revolution is around y=-5 we have

$R=ln(x)-(-5)\\r=\frac{1}{2}x-2-(-5)\\$

and by replacing in the integral we have

$V=\pi \int \limit_{x1}^{x2}[(lnx+5)^2-(\frac{1}{2}x+3)^2]dx\\$

$V=\pi [28x+\frac{1}{x}+xln^2x-12xlnx-6lnx]$

and by evaluating in the limits we have

$V=61.66$

Hope this helps

regards

3 0

3 years ago

What is 6,570 rounded to the nearest thousand?

almond37 [142]

Answer:

7,000 is the answer

Step-by-step explanation:

5 0

3 years ago

Please help!

kirill115 [55]

Answer:

73 and 113 / 144 ft^2

Step-by-step explanation:

Lets convert everything into pure feet.

10ft 5in = 10 and 5/12 feet = 125/12 feet

14ft 2in = 14 and 1/6 feet = 85/6

Now lets calculate area:

1/2 * 125/12 * 85/6 = 125*85 / 144 = 73 and 113/144

3 0

3 years ago

Help me with this ;-;

uysha [10]

If you multiply all the square inches, you would get 15,015

4 0

3 years ago

Why is the inequality x≤6 equivalent to the inequality x−5≤6−5

Monica [59]

Two inequalities are equivalent if they have the same set of solutions.

x - 5 ≤ 6 - 5

x - 5 ≤ 1 |add 5 to both sides

x ≤ 6

8 0

3 years ago