Ask question

Ask question

All categories

3 years ago

7

Ralph is an electrician. He charges an initial fee of $26, plus $31 per hour. If Ralph earned $119 on a job, how long did the jo

b take?

1 answer:

lubasha [3.4K]3 years ago

5 0

3 hours

You can turn this into an equation:

F = 26 + 31t
Where F is the money Ralph earned, and t is the number of hours he worked.

Plugging in the 119 for F, we get
119 = 26 + 31t

93 = 31t

3 = t

You might be interested in

Find the inverse of the matrix , if it exists

Montano1993 [528]

Answer:

So, option A is correct.

Step-by-step explanation:

To find the inverse of the matrix, the formula is:

$A^{-1} = 1/|A| * Adj A$

Inverse of the matrix exists if |A| does not equal to 0

|A| = 7 * 9 -( -2 * -10)

|A| = 63 - 20

|A| = 43

AS |A| ≠ 0

so inverse exist.

now finding Adj A

$Adj A$ = $\left[\begin{array}{cc}9&2\\10&7\end{array}\right]$

$\left[\begin{array}{cc}9/43&2/43\\10/43&7/43\end{array}\right]$

So, option A is correct.

8 0

3 years ago

PLZ HELP ASAP I WILL MARK YOU BRAINLIEST

pochemuha

Answer:

The slope is 2.

Step-by-step explanation:

The formula for slope is-

$\frac{y_{1} -y_{2} }{x_{1} -x_{2} } \\$

Plug in the points (6, 10) and (2, 2).

$\frac{10-2}{6-2}=\frac{8}{4} =2$

5 0

3 years ago

What is the value of this expression (12-x)+ y/2 when x=4 and y=8 A. 4 B. 6 C. 8 D. 10

Ludmilka [50]

Answer:

$12$

Step-by-step explanation:

$(12-x)+ \frac{y}{2}$

$(12-4)+ \frac{8}{2}$

$(12-4)+ 4$

$8+4$

$12$

Hope this helps!

5 0

2 years ago

Read 2 more answers

Maddy is carrying a 555 liter jug of sports drink that weighs 7.5\text{ kg}7.5 kg7, point, 5, start text, space, k, g, end text.

Georgia [21]

Answer:

3

Step-by-step explanation:

It was right on Khan Academy

6 0

3 years ago

A flying fish deep under the sea dreams to reach the clouds one day the fish is at a depth of 200 feet below sea level right und

Anarel [89]

Answer:

6500

Step-by-step explanation:

6700-200= 6500

6500 ft above sea level

6 0

2 years ago