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SpyIntel [72]
3 years ago
6

2x-8=10 I Need help pls

Mathematics
2 answers:
Alja [10]3 years ago
5 0

Answer:

9

Step-by-step explanation:

2x-8=10

2*9=18

18-8=10

hope this helps :)

just olya [345]3 years ago
4 0

Answer:

x = 9

Step-by-step explanation:

Add 8 to both sides

2x = 18

Divide both sides by 2

x = 9

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GuDViN [60]

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Step-by-step explanation:

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How many natural numbers N have the property among 1,2,..........,N exactly 30% are divisible by 3?
k0ka [10]

Answer:

The answer is B. 2.

Step-by-step explanation:

We know that for N = 1 and N = 2, none of them are divisible by 3.

For N = 3, 33.33% are divisible by 3.  For N = 4, 25% (which is already less than 30%), so N = 5 would also be less.

At N = 6, we're back up to 33.33%.  N = 7 is already less than 30%.

At N = 9, you guessed it, 33.33%.  N = 10 is 30% (3, 6, and 9).  So we have one case.

Moving along, at N = 18, 33.33%.  N = 20 is again 30% (3, 6, 9, 12, 15, and 18).  Two cases now.

Finally, at N = 21, again 33.33%.  N = 22 and N = 23 are both greater than 30%.  As we continue this, for any N after 20, we will always be greater than 30%.

4 0
3 years ago
How would I use factoring to write equivalent expressions for the following expressions?
Sedbober [7]

Answer:

4(a + 6)

3(x - 4)

Step-by-step explanation:

Factoring is just rewriting an expression into the parts that multiply together to make the original...like if I had a 100 but decided instead to write 4×25 or if I had 25x I wrote 5(5x) .

If you look at your

4a + 24

You're looking for whatever is the same in both pieces (the 4a and also the 24) So there is a 4 in 4a and there is also a 4 "in" 24 (as in 4×6 is 24)

So if you pull out that 4 and throw it up front, whatever is left behind goes into a pair of parentheses.

4 (____ + ____)

4(a + 6)

This is your factored form bc if you multiply that 4 back in you'll get the original expression back again.

4a + 24

= 4(a + 6)

It's like factoring is "un-distributive" property.

Theres a 3 in 3x and also in 12

3x - 12

= 3(x - 4)

6 0
3 years ago
The circumference of a circle is 24pi ft. What is the area, in square feet?
dexar [7]

Answer:

144π

Step-by-step explanation:

we need the radisu

circumference formula: 2πr

2πr=24π

12=r

area formula:

πr²

12²π= 144π

8 0
3 years ago
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