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boyakko [2]
3 years ago
6

Factorise fully the following: a) x² + x b) 3x - 9x^2 c) 7x^3 – 35x d) 4x^3 + 24x^2

Mathematics
1 answer:
stich3 [128]3 years ago
6 0

Answer:

a) x ( x+1)

b) 3x ( 1-3x)

c) 7x ( x^2 - 5)

d) 4x ( x^2 + 6x)

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How would I solve this?<br> 4a-6=-2+14
LiRa [457]

Solving these equations can prove to be tricky, but once you understand them, ridiculously easy! <u><em>Remember:</em></u> <em>your goal is to reduce it to (variable=number). Make sure to use opposite operations to cancel out numbers, and don't forget what you do to one side you must do to the next. There isn't one true order, but you'll know you have a great understanding of what you're doing if you can solve it numerous different times and wind up with the same result!</em>

Set up the equation!

4a-6=-2+14

Let's try subtracting 14 from both sides! We must do the opposite operation to cancel it out.

14-14=0\\-6-14= -20

Now we have

4a-20=-2

We have to start on the left side now, because we can't have an equation with one blank side. The number you start with will end up getting canceled out, as 0. How about we add 20 to both sides?

-20+20=0\\-2+20=18

Now we have

4a=18

Next, we have to apply the opposite opperation to both sides. The only opperation left is multiplication (4a). Therefore, we need to divide by 4, because we have to isolate a.

4a/4=a\\18/4=4.5

Now we have

a=4.5

Your answer is a=4.5!

<u><em>Remember:</em></u><em> </em><em>Combine like terms first, it's much easier!</em>

Please let me know if this helped or if you have questions, and if you can, I'd be so grateful to receive a rating! Two-sided equations took me a long time, so I want to help you understand!

5 0
3 years ago
A family spends 1⁄10 of its annual income for housing, 1⁄4 for food and clothing, 1⁄5 for general expenses, and 2⁄15 for enterta
tankabanditka [31]
In order to make the whole problem easier, you would have to get all the numbers to have the same denominator which would be 60.

1/10 * 6 = 6/60
1/4 * 15 = 15/60
1/5 * 12 = 12/60
2/15 * 4 = 8/60

Now that all the numbers have the same denominator, you would add them to get 41/60.
In conclusion, the answer would be D.
5 0
3 years ago
10 men working for 6 days can complete 5 copies of a book if there are 8 men working to complete 4 copies of the book how many d
Musya8 [376]

Answer:

6 Days

Step-by-step explanation:

Practically:

It takes,

10 Men ( complete ) 5 Copies --> 6 Days

So, 2 Men can complete 1 copy in 6 days.

Question asks us :

8 Men ( complete ) 4 Copies --> X Days

It will take 6 days because the proportion of men to copies is same as the first equation.

Theoretically:

10 Men 5 Copies 6 Days

8 Men   4 Copies  X Days

> 6/X = 8/10 ( If men decrease the number of days increase. So, it is an indirect proportion. ) . 5/4 ( If copies decrease the number of days decrease as well. So, it is a direct proportion. )

> 6/X = 8/10 . 5/4

> 6/X = 40/40

> 6/X = 1

<h2>> X=6</h2><h2></h2><h2><em>I hope it will be understood.</em></h2><h2><em>If I have any inaccuracies please let me know.</em></h2><h2><em>Have a nice day and never stop questioning!</em></h2><h3><em></em></h3>

6 0
3 years ago
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3.<br> Find the measure of each angle. If 34 degrees is given below.
Anettt [7]

Answer:

a. 34

b 146

c 146

d. 34

e 146

f 146

Step-by-step explanation:

4 0
3 years ago
Chang wants to rent a boat and spend at most $44. the boat cost $8 per hour, and chang has a discount coupon for $4 off. what ar
blagie [28]
8t-4 is less than or equal to 44

t=6
3 0
3 years ago
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