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alina1380 [7]
4 years ago
11

Write the expression in factored form n^2-18n-81

Mathematics
1 answer:
NISA [10]4 years ago
3 0

Answer:

n(n-18)-81

Step-by-step explanation:

n^2-18n-81

=n(n-18)-81

I hope this helps!

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Olivia walked 2 2/5 km in 2/3 hour while Ryan walked 4 1/2 km in 1 1/2 hours. Who walked faster and how much faster?
Aleks04 [339]
Find the unit rate for each Olivia and Ryan:

2 2/5 km       15       36 km
------------ * ------- = ------------ = 3.6 km/hr (Olivia)
 2/3 hr          15        10 hr


4 1/2 km          2          9 km
------------- * --------- = --------- = 3 km/hr (Ryan)
1 1/2 hr           2           3 hr

Olivia walked 0.6 km/hr faster than did Ryan.



7 0
3 years ago
So say if its 4:30 pm now for me, what time will it be in 4 and a half hours? im lazy lolz
goldfiish [28.3K]

Answer:

9:00

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
How do you find the slope of a line perpendicular to a given line?
enyata [817]
You have a line:
y=mx+b  (slope-intercepted form)
m=slope of this line.

The slope of a line perpendicular to that given line will be: ´"m´"
m´=-1/m.

For example:
y=8x+3
m=8

The solpe fo a line perpendicular to "y=8x+3" is:
m`=-1/8
5 0
3 years ago
Please help me please
Norma-Jean [14]

Answer:

42

Step-by-step explanation:

4x + 2 = 1/2 (4x + 44)                Be careful how you do this. I have multiplied both sides by 2

2(4x + 2) = 4x + 44                    Remove the brackets (distributive)

8x + 4 = 4x + 44                        Subtract 4x from both sides

8x-4x + 4 = 44                          

4x + 4 = 44                                Subtract 4 from both sides

4x + 4-4 = 44-4

4x = 40                                       Divide by 4

4x/4 = 40/4

x = 10

The mid line is 4x + 2

The mid line is 4*10 + 2

The mid line is 40 + 2

The mid line is 42

The base is 4x + 44

The base is 4*10 + 44

The base is 40 + 44 = 84 which is twice the midline. I did this just to show it is twice as big as the midline.

3 0
3 years ago
Jane and John had an equal number of flowers. Jane made bouquets with 7 flowers each, while John made bouquets with 9 flowers ea
kolbaska11 [484]

Answer:

63

Step-by-step explanation:

The least common multiple of 7 and 9 is 63

6 0
2 years ago
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