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Dmitry_Shevchenko [17]
3 years ago
11

Factorise n^2 -2n -120

Mathematics
2 answers:
Vilka [71]3 years ago
5 0
N-12 n+10 is the answer
lions [1.4K]3 years ago
4 0

Answer:

(n-12)(n+10)

Step-by-step explanation:

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Cory needs 24 boards that are 47 1/2 inches long . how many feet of board does he need?
Natasha2012 [34]
24 * 47.5 = 1140 inches ;
But, <span>ft =<span>in * 0.083333 ;
1140 * 0.083333 </span></span>≈ 95 feet of board ;
4 0
3 years ago
What equation would go through (-9,-9) and (-6,0)
Scilla [17]

Answer:

The equation of line is y = 3 x +18

Step-by-step explanation:

Given as :

The points are

(x_1, y_1) = (- 9, -9)

(x_2, y_2) = (- 6 , 0)

Let The slope = m

Now,<u> The slope is calculated in points form</u>

So, Slope = \dfrac{y_2-y_1}{x_2-x_1}

I.e m = \dfrac{y_2-y_1}{x_2-x_1}

or, m = \dfrac{0 - (-9)}{- 6 - (-9)}

or, m = \dfrac{9 }{3}

I.e m = 3

So, The slope of points = m = 3

<u>Now, the equation of line in slope - point form can be written as</u>

y - y_1 = m ( x - x_1 )

where m is the slope of line

i.e y - (-9) = ( 3 ) × ( x - (-9) )

or, y + 9 =  3 × (x + 9)

∴ y + 9 = 3 x + 27

Or, y = 3 x + 27 - 9

O,r y = 3 x + 18

So, The equation of line is y = 3 x + 18

Hence, The equation of line is y = 3 x +18 . Answer

7 0
3 years ago
How many whole numders have the sum of 40
cluponka [151]

Answer:

We start with 0 + 40.

1. 0 + 40

2. 1 + 39

3. 2 + 38

4. 3 + 37

.....

keep going....

.....

19. 18 + 22

20. 19 + 21

21. 20 + 20

There are 21 pairs of whole numbers that have a sum of 40.

Step-by-step explanation:

hope this helps :)

6 0
3 years ago
2. The student council at Camp Creek Middle School determines that 3 out of 4
Gemiola [76]

Answer:

Hi there!

Your answer is:

996 students were apart of this survey!

Step-by-step explanation:

3 out of 4 students means that 75% of students prefer the assemblies be held on Friday.

If 75% = 747 students then:

/75

1% = 9.96 students

×100

100% = 996 students

I hope this makes sense!

8 0
3 years ago
Find the volume of the figure.
katovenus [111]

Answer:

272 m3

Step-by-step explanation:

2x8x34=544

544/2=272

I guess

7 0
3 years ago
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