All categories

3 years ago

Given the function f(x) = 2(x + 4), find x if f(x) = 20. 6 48 14 8

1 answer:

3 0

So since we are solving for x, put 20 instead of f(x):

20 = 2(x + 4)

You can distribute 2 to x and 4:

20 = 2x + 8

Subtract both sides by 8:

12 = 2x

Divide both sides by 2

6 = x

You might be interested in

edwardo wants to find the height of a building using the sun, his height, and similar triangles. He goes out during his noon lun

FrozenT [24]

You can indeed use similar triangles to get a side of another similar triangle.

let's say Edwardo stood next to the building and his shadow was 20ft, he's 4ft tall, and the building cast a shadow of 125ft, then, check the picture below.

8 0

3 years ago

Central= 127 Radius= 7. What is the length of the indicated arc (x)

tia_tia [17]

Given:

$\begin{gathered} \theta\text{ = 127} \\ r\text{ = 7 mm} \end{gathered}$

Required:

Length of an arc x.

Explanation:

Length of an arc is given as,

$Length\text{ of an arc =}\frac{\theta}{360}\times2\pi\text{r}$

Length of an arc is calculated as,

$\begin{gathered} Length\text{ of an arc = }\frac{127}{360}\times2\times3.14\times7 \\ Length\text{ of an arc = 0.3528 }\times2\times3.14\times7 \\ Length\text{ of an arc = 15.5091 mm} \\ \end{gathered}$

Answer:

Thus the value of the length of an arc is 15.5091 mm

5 0

2 years ago

Find the value of −12 + 8 −(−9). Question 20 options: −13 −5 13 5

timama [110]

Answer:

D) 5

Step-by-step explanation:

-12 + 8 + 9 = 5

8 0

3 years ago

For his phone service, Dan pays a monthly fee of $23, and he pays an additional $0.05 per minute of use. The least he has been c

Otrada [13]

Answer:

23+0.05m=88.65

Step-by-step explanation:

0.05m=65.65

m=1,313

i think this is right, I am sorry if it is wrong...

8 0

3 years ago

Calculate the loss on selling 50 shares of stock originally bought at 13 3/4 and sold at 12

forsale [732]

Cost per share:

13 3/4 = 13 + 3/4 = (13 * 4 + 3 ) / 4 = (52 + 3 ) / 4 = 55 / 4

Selling price:

12

Loss per share: 55 / 4 - 12 = ( 55 - 48 ) / 4 = 7 /4

7 / 4 = 4 / 4 + 3 / 4 = 1 + 3/4 = 1 3/4 = 1.75

Total loss = loss per share * number of shares

=> 50 * 1.75 = 87.5

Answer: 87.5

3 0

3 years ago

Read 2 more answers