A 6 miles<br> B 8 miles<br> C 4 miles<br> D 2 miles

Help this confusing no matter how any times I do it

3241004551 [841]

Answer:

The variable 8. Equation is 16 + 12x = 112.

Step-by-step explanation:

We know that she spent $16 dollars on magazines, so we can put it in the equation (16 + x= ?). We also know that the total is $112, so we can also add that (16+ x= 112). We don't know how many books she got, but we do know how much they cost (16 + 12x=112. So that makes the books the variable (X).

To find the variable we need to take out the magazines from the price. 112-16=96. Now we're left with 12x=96. Now all we have to do is divide 96 by 12, which equals 8.

Sorry everything is so long, I tried to make it short as possible

8 0

3 years ago

Which of the following expressions is equivalent to 9m? m – 9 9 + m (9)( m)

Lena [83]

Answer:

(9)(m)

Step-by-step explanation:

We can obtain the right answer to question as follow:

m – 9

We can not carryout the operation because m and 9 has nothing in common.

9 + m

We can not carry out the operation because 9 and m has nothing in common.

(9)(m)

Thus, (9)(m) can be written as

(9)(m) = 9 × m

We can carryout the operation since 9 can multiply the coefficient of m i.e 1 as shown below:

9 × m = 9 × 1m = 9m

Thus,

(9)(m) = 9m

From the above illustrations, we can see that (9)(m) is equivalent to 9m

6 0

3 years ago

PLEASE HELPPPPP PLEASE 40 POINTS

Contact [7]

Answer:

18x - 9 = 72
3(6x - 3) = 72
x = 45

Step-by-step explanation:

Apply the distributed property:

Apply the distributed property: 3/5 × 30x = 18x, 3/5 × 15 = 9
Re-write the equation: 18x - 9 = 72
18x - 9 = 72 is an option listed, so that's one of the answers.

See the other options:

Another option that looks like it could be the answer is 3(6x - 3) = 72
Apply the distributed property like we did above, so it now looks like this: 18x - 9 = 72
This is the same as what we got above, so it is also an answer.

Solve:

Add 9 to each side, so it now looks like this: 18x = 81
Divide each side by 18 to cancel out the 18 next to x. It should now look like this: x = 4.5
x = 45 is an option listed, so that's one of the answers.

I hope this helps!

6 0

3 years ago

Read 2 more answers

Problem: Construct a triangle with interior angle measures of 60° and 60°. Let one of the side lengths be 10. What are the lengt

Sav [38]

Answer:

Step-by-step explanation:

Given a triangle with angles 60° and 60°. Let the third angle be represented by x, so that;

x + 60° + 60° = $180^{o}$ (sum of angle in a triangle)

x + 120 = $180^{o}$

x = $180^{o}$ - 120

x = 60°

Thus, since the third angle of the triangle is 60°, then the triangle is an equilateral triangle. For an equilateral triangle, all sides are equal and all its angles are equal. So that the other sides of the triangle is 10 each.

<ABC ≅ <BAC ≅ < ACB ≅ 60°

AB = BC = AC = 10 cm

The required construction for the question is attached to this answer for more clarifications.

5 0

3 years ago

The graph of f '(x) is continuous and decreasing with an x-intercept at x = 2. Which of the following statements must be true? (

bixtya [17]

Answer:

The graph of f is always concave down ⇒ the first answer

Step-by-step explanation:

* Lets explain how to solve the problem

- Remember that : If f(x) is a function then the solutions to the

equation f′(x) = 0 gives the maximum and minimum values to f(x)

- The value of x gives maximum if f′′(x) is negative and minimum if

f′′(x) is positive.

- Inflection points of the function f(x) are found the solutions of the

equation f′′(x) = 0

* Lets solve the problem

- The graph of f'(x) is continuous means that the graph is unbroken line

- The graph of f'(x) decreasing with an x-intercept at x = 2 means

f'(2) = 0

- The differentiation of a function equal to zero at the critical point

(minimum or maximum) of the function

∵ f'(x) = 0 at x = 2

∴ The x-coordinate of the critical point of f(x) is 2

- If the differentiation of the function is decreasing, then the critical

point of the function is maximum point

∵ f'(x) is decreasing

∴ The critical point of the f(x) is maximum point

- That means the slope of curve is negative

∴ The graph of f is concave down at x = 2

* The right answer is the graph of f is always concave down

5 0

3 years ago

A 6 miles B 8 miles C 4 miles D 2 miles