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Sati [7]
3 years ago
6

Factorise: k² - 2k - 8with explaining the steps ​

Mathematics
2 answers:
scoundrel [369]3 years ago
8 0

Answer:

( k-4)(k+2)

Step-by-step explanation:

k² - 2k - 8

What 2 numbers multiply to -8 and add tp -2

-4*2 = -8

-4+2 = -2

( k-4)(k+2)

Burka [1]3 years ago
7 0

Refer to the attachment for steb-by-step explanation.

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What is an equation of the line that is parallel to y=5x−7 and passes through (1, 11) ?
Leona [35]

ANSWER

y = 5x + 6

EXPLANATION

The given equation is

y = 5x - 7

The slope of this line is

m = 5

Any line parallel to this line also has the same slope.

If the parallel line passes through (1,11),

then, it's equation is given by:

y-y_1=m(x-x_1)

Substitute the slope and point to get,

y - 11 = 5(x - 1)

y = 5x - 5 + 11

y = 5 x + 6

is the required equation.

7 0
3 years ago
Read 2 more answers
Find x, if the perimeter is 106 <br> 3x+6<br> 2x-3
slega [8]
So we are given that the perimeter is 106 and two problems to solve
we will write this as an equation
106 = 3x + 6
we will subtract 6 from both sides
100 = 3x 
now divide by 3 to isolate the variable
we will get 33 1/3 as the x

for the second one
106 = 2x - 3
add three to both sides
109 = 2x 
divide by 2 to isolate the variable
we will get 54 1/2 as the x

Hope this helps :)
3 0
4 years ago
Need help with question 2please due in 10mins
Stella [2.4K]

Answer:

x        1            2             6            12         25

f(x)     22        34           82          154       310

f(3)= 46 means that in the third month, the online magazine provider will charge a total of $46.00

Step-by-step explanation:

For finding the missing f(x) values:

Plug in the x-values that are given into the original equation: f(x)= 12x + 10

ex: f(1)= 12(1) + 10 => 22

For finding the missing x value, set the original equation to the given f(x) value

ex: 34 = 12x + 10 => 2

7 0
3 years ago
HELP QUICK I need to do this last question
yaroslaw [1]

Answer:

<u><em>45/49</em></u>

Step-by-step explanation:

You do the inverse operation so 7/15=15/7. 15/7×3/7= 45/49. You can't simplify it any further so it is 45/49.

3 0
3 years ago
How many two-digit numbers satisfy the following property: the last digit (units digit ) of the
jarptica [38.1K]
0 because no square numbers end in 8 none no matter how many digits it has.
5 0
3 years ago
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