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AveGali [126]
3 years ago
9

A certain number is added to four result is double​

Mathematics
1 answer:
Pavel [41]3 years ago
3 0
4, 4+4 is 8 which is double of 4
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Homework Progress<br> 0<br> Find the nth term of the following sequence: 4 7 12 19 28
just olya [345]

<em>Answer:</em>

n²+3

<em>Explanation:</em>

The differences between the terms are not the same, so this is not "linear". Knowing that the sequence may have started with a 1, you can try subtracting the first number with a number to get 1, and use that number to subtract the rest.

4 - 3 = 1
7 - 3 = 4
12 - 3 = 9
19 - 3 = 16
28 - 3 = 25

In this case, subtracting 3 to all the numbers gave us perfect squares! So this means the nth term has to do with squaring the number and adding three afterward! This can be checked.

√1 = 1
√4 = 2
√9 = 3
√16 = 4
√25 = 5

As we found the values of these terms by subtracting three first and then finding its square root, the nth term will be the opposite; squaring and then adding three! Again, this can be checked!

1² + 3 = 4
2² + 3 = 7
3² + 3 = 12
4² + 3 = 19
5² + 3 = 28

Hope this helps !! :D

5 0
2 years ago
Sanjay needs 90 meters of fence to go around a rectangular garden.
VladimirAG [237]
W + 3w = 90 is obviously wrong
8 0
3 years ago
Read 2 more answers
A punch recipe requires 4 L of orange juice and 3 L of pineapple juice. Sylvia wants to tripple the recipe. What is the total am
kirill [66]

Answer:

Sylvia needs 12 l of orange juice and 9 l of pineapple juice.

Step-by-step explanation:

triple means multiplying by 3

so multiply 4 l of orange juice by 3 and 3 l of pineapple juice by 3

3 0
4 years ago
Plz help i will mark brainlist
iragen [17]
Y=x+4
3x+Y=-8

3x+x+4=-8
X=-3. Substitute the value of x


Y=-3+4
Y=1

(X,Y)= (-3,1)

So the answer is C
6 0
3 years ago
Read 2 more answers
How you do you solve for it??
AysviL [449]
Sam is dead, im sorry to have to tell you over line, i love you mom
With love,
                 Mike 

6 0
3 years ago
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