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3 years ago

PLEASE HELP ILL GIVE BRAINLIEST!!!!

Mathematics

2 answers:

Free_Kalibri [48]3 years ago

5 0

Answer:

The first one is x=45

The second one is w=14

The third one is x=6

Step-by-step explanation:

konstantin123 [22]3 years ago

4 0

Which value of w below is the solution to this equation ANWSER - C. 14 I think

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3 years ago

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3 years ago

If 6 people want to share a 30 pound bag of beans equally by weight how many pounds of beans should each person get? Between wha

sertanlavr [38]

Answer:

The 6 people would each get 5lb. of beans. 5 lies between 4 and 6.

Step-by-step explanation:

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3 years ago

Show that 3 · 4^n + 51 is divisible by 3 and 9 for all positive integers n.

-BARSIC- [3]

Answer:

Step-by-step explanation:

Hello, please consider the following.

$3\cdot 4^n+51=3\cdot 4^n+3\cdot 17=3(4^n+17)$

So this is divisible by 3.

Now, to prove that this is divisible by 9 = 3*3 we need to prove that

$4^n+17$ is divisible by 3. We will prove it by induction.

Step 1 - for n = 1

4+17=21= 3*7 this is true

Step 2 - we assume this is true for k so $4^k+17$ is divisible by 3

and we check what happens for k+1

$4^{k+1}+17=4\cdot 4^k+17=3\cdot 4^k + 4^k+17$

$3\cdot 4^k$ is divisible by 3 and

$4^k+17$ is divisible by 3, by induction hypothesis

So, the sum is divisible by 3.

Step 3 - Conclusion

We just prove that $4^n+17$ is divisible by 3 for all positive integers n.

Thanks

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3 years ago

The ticket price for an ice hockey match used to cost £19.60. The price has now increased by 12.5%. How much will 2 tickets cost

Amanda [17]

Answer:

The 2 tickets will cost £44.10 after the increase.

Step-by-step explanation:

First, you have to multiply £19.60 by 12.5% to find the increase in the cost of tickets.

$19.60(0.125)=2.45$

Add the price increase to the original cost to find the new cost of each ticket.

$19.60+2.45=22.05$

Multiply the result by 2 since you have to look for the cost of the 2 tickets.

$22.05(2)=44.10$

8 0

3 years ago