All categories

3 years ago

X^(2)-8x=-7 Please show work.

Mathematics

1 answer:

valkas [14]3 years ago

4 0

Answer:

This equation has two solutions.

1 solution is: x - 1

Solution #2 is : x - 7

Step-by-step explanation:

1. Move the constant to the left. We end up with x^2 - 8x +7 = 0

2. Rewrite the expression: x^2 - x - 7x + 7 = 0

3. Factor the expressions: x * (x-1) -7(x-1) = 0

4. Separate into possible cases : (x-1) * (x-7) = 0

5. Solve the equation(s): x-1 = 0

x-7 = 0

6. Possible solutions are as follows: x-1 OR x-7

You might be interested in

Please answer this question, and happy valentines day!! <3

tino4ka555 [31]

Given:

The two ways table.

To find:

The number of girls in year 9.

Solution:

Using the two ways table, we get

Boys in year 10 = Total student in year 10 - Girls in year 10

= 256 - 123

= 133

Boys in year 9 = Total boys - Boys in year 10 - Boys in year 11

= 407 - 133 - 125

= 149

Girls in year 9 = Total students in year 9 - Boys in year 9

= 303 - 149

= 154

Therefore, the number of girls in year 9 is 154 and the correct option is C.

6 0

3 years ago

Given the function:

yanalaym [24]

Step-by-step explanation:

f(5) = 3(5)+4-2+5= 15 + 4 -2 + 5=

19 - 2 +5= 17 + 5 = 22

the answer is a

5 0

3 years ago

Read 2 more answers

The circumference of the inner circle is 22 ft. The distance between the inner circle and the outer circle is 2ft. By how many f

Lady bird [3.3K]

Answer:

<h2>Answer is in the attachment! </h2>

${ \pink{Mark \: as \: Brainlist }}$

4 0

3 years ago

Which relationship has a zero slope? A two column table with five rows. The first column, x, has the entries, negative 3, negati

SOVA2 [1]

Answer:

y=3 x=1

Step-by-step explanation:

6 0

4 years ago

Tiffany uses 1/10 of her wages each month to buy company stock. Also she puts 1/20 of her wages in a savings account, and 1/15 i

Novosadov [1.4K]

Answer:

The fraction of Tiffany wages taken out for these purpose is $\dfrac{13}{60}$ .

Step-by-step explanation:

Given as :

Let The wages earn by Tiffany = $x

Let The fraction of Tiffany wages taken out for purpose = $y

Tiffany uses $\dfrac{1}{10}$ of her wages each month to buy company stock.

She puts $\dfrac{1}{20}$ of her wages in a savings account .

She puts $\dfrac{1}{15}$ of her wages into company pension plan

Now,

Total fraction of wages used by Tiffany = fraction used to buy company stock + fraction used in saving account + fraction used in pension plan

Or, y = $\dfrac{1}{10}$ + $\dfrac{1}{20}$ + $\dfrac{1}{15}$

Now taking LCM

Or, y = $\dfrac{12 + 6 + 8}{120}$

Or y = $\dfrac{26}{120}$

Or, y = $\dfrac{13}{60}$

So, The fraction of Tiffany wages taken out for purpose = y = $\dfrac{13}{60}$

Hence, The fraction of Tiffany wages taken out for these purpose is $\dfrac{13}{60}$ . Answer

8 0

3 years ago