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2 years ago

Pls help u dont have to explain that much

Mathematics

1 answer:

ira [324]2 years ago

3 0

Answer:

k = -7

Step-by-step explanation:

Given

x² - x - 42 = (x + k)(x + 6)

Required

Find k

x² - x - 42 = (x + k)(x + 6)

Expand the left hand side

x²-7x + 6x - 42 = (x + k)(x+ 6)

Factorize

x(x - 7) + 6(x- 7) = (x + k)(x+ 6)

Further factorize

(x - 7)(x + 6) = (x + k)(x + 6)

By comparison

x + k = x - 7

Subtract x from both sides

k = -7

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8[12x - 24] + 6 = -2

Paladinen [302]

Answer:

x=2.75

Step-by-step explanation:

The answer will be correct.

7 0

2 years ago

Find slope I need help on this lol

irinina [24]

Step-by-step explanation:

$slope = \frac{4 - 0}{2 - 3} \\ slope = \frac{4}{ - 1} \\ slope = - 4$

4 0

2 years ago

Find the distance between (-1,4) and (-1,12)

lukranit [14]

Answer:

8 units

Step-by-step explanation:

Since both are on the same place in terms of the x-axis, this makes it much easier. Just go from (-1,4) and move upwards upon the graph until your at (-1,12). You counted 8 units. *mic drop*

8 0

2 years ago

Read 2 more answers

Harold earns $10.50 per hour working at a doctor's office. On Monday he spent 1 5/12 hours filing paperwork, 1 3/4 sending email

Lana71 [14]

Answer:

the total earnings is $58

Step-by-step explanation:

The computation of earnings is shown below:

= Time spent in filling paperwork + time spent in sending emails + time spent in making appointments

= (1 5 ÷ 12 × $10.50) + (1 3 ÷ 4 × $10.50) + (2 1 ÷ 3 × $10.50)

= 14.875 + 18.375 + 24.50

= $57.75

Hence, the total earnings is $58

The same is to be considered

6 0

2 years ago

How to change percentage into fraction

Studentka2010 [4]

Step-by-step explanation:

Step 1: Write down the percent divided by 100 like this: percent 100.

Step 2: If the percent is not a whole number, then multiply both top and bottom by 10 for every number after the decimal point. ...

Step 3: Simplify (or reduce) the fraction

8 0

2 years ago

Pls help u dont have to explain that much​

Pls help u dont have to explain that much