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Serggg [28]
3 years ago
8

Find the sum of all integers 30 to 80. (Is there a formula to do this?

Mathematics
2 answers:
Shkiper50 [21]3 years ago
7 0

Answer:

Add all the numbers from 30 to 80 and that is your answer

Step-by-step explanation:


Brums [2.3K]3 years ago
5 0

you consider the arithmetic series with first term 30, common difference 1, and last term 80

the sum of arithmetic sequence is n/2(first term + last term), and there are (80-30)+1 = 51 numbers so n = 51 and so 51/2(30+80) = 2805 which represents the sum 30 + 31 + 31 + ... + 78 + 79 + 80

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raketka [301]

Answer:

93.5ft

Step-by-step explanation:

7 0
3 years ago
If 6=2x+4y, what is the value of x+2y?
Tamiku [17]

Answer:

3

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6 0
3 years ago
Lauren is sewing a quilt using fabric squares.
KengaRu [80]

Answer:

x^2 + 8x + 16

Step-by-step explanation:

Given length of square x + 4.

Area of square with side S is given by S^2.

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4 0
3 years ago
Solve. 0 = × squared +3​
Marta_Voda [28]

Answer:

± sqrt(3)i = x

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0 = x^2 +3​

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±sqrt(-3) = sqrt(x^2)

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± sqrt(3)sqrt(-1) = x

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3 0
3 years ago
2(4x+3)>-10 or -5x-15>5
bezimeni [28]
I don’t really understand but this are the answer for both the first one: x>-2 second: x<-2
8 0
3 years ago
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