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pochemuha
3 years ago
10

I need help with this

Mathematics
1 answer:
bekas [8.4K]3 years ago
5 0
Could you tell me that website? I think I know the answers
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What is the sum of all of the perfect squares between
Nonamiya [84]

Answer:

(-138) is the answer.

Step-by-step explanation:

Perfect square numbers between 15 and 25 inclusive are 16 and 25.

Sum of perfect square numbers 16 and 25 = 16 + 25 = 41

Sum of the remaining numbers between 15 and 25 inclusive means sum of the numbers from 17 to 24 plus 15.

Since sum of an arithmetic progression is defined by the expression

S_{n}=\frac{n}{2}[2a+(n-1)d]

Where n = number of terms

a = first term of the sequence

d = common difference

S_{8}=\frac{8}{2} [2\times 17+(8-1)\times 1]

   = 4(34 + 7)

   = 164

Sum of 15 + S_{8} = 15 + 164 = 179

Now the difference between 41 and sum of perfect squares between 15 and 25 inclusive = 41-179

= -138

Therefore, answer is (-138).

7 0
2 years ago
Which of the following represents the most accurate estimation of 4+8
UkoKoshka [18]
<span>5

estimating sums of single digit numbers which of the following represents the most accurate estimation of 4+8? answer 5,10,20, and 25</span>
3 0
3 years ago
Read 2 more answers
3. Determine if the following triangle is a right triangle or not using the Pythagorean Theorem Converse. Triangle with side len
stepladder [879]

Answer:

false

Step-by-step explanation:

these measure do not form a right triangle

5 0
1 year ago
What is the value of x
kati45 [8]

Answer:8

Step-by-step explanation:

6 0
2 years ago
What is x/5+7=16 gonna be?
Margarita [4]

x=45

Step-by-step explanation:

x/5+7-7=16-7

5/1×x/5=9×5/1

x=45

6 0
3 years ago
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