All categories

3 years ago

Halp I'm already in calculus even I'm still in grade 7...

Mathematics

1 answer:

noname [10]3 years ago

6 0

Answer:

See below

Step-by-step explanation:

This is about sums.

Use the numbers in the table to find respective sums.

1. Sum of all fi

∑fi = 3 + 5 + 7 + 8 + 12 + 10 = 45

2. Sum of all xi

∑xi = -2 + 5 + 4 - 3 + 7 + 6 = 17

3. Sum of all yi

∑yi = 3 + 3 - 7 + 2 - 5 - 1 = - 5

4. Sum of fi*xi

∑(2 to 4)fi*xi = 5*5 + 7*4 + 8*(-3) = 29

5. Sum of (xi + yi)

∑(1 to 3)(xi + yi) = (-2 + 3) + (5 + 3) + (4 - 7) = 6

You might be interested in

(x+3)^0 Rewrite the equation with positive exponents and simplify. x≠-3.

sveta [45]

$\huge\text{Hey there!}$

$\huge\textbf{Equation:}$

$\mathsf{(x + 3)^0}$

$\huge\textbf{Simplifying:}$

$\mathsf{(x + 3)^0}$

$\text{Anything raised to the 0 power it automatically equal to 1.}$

$\huge\text{So, this mean that your answer should be: \boxed{\mathsf 1}}\huge\checkmark$

$\huge\text{Good luck on your assignment \& enjoy your day!}$

~ $\frak{Amphitrite1040:)}$

3 0

2 years ago

You have $20 gift card from a bookstore that you use to buy two books for $18.49. The sales tax is 5.75%. Will the gift card cov

Katena32 [7]

Hi!

18.49 * 5.75% = 1.063175

18.49 + 1.063175 = 19.553175 (Round to the nearest cent).

The cost (including tax) will be $19.55. Since $20 is greater than $19, the gift card will be able to cover the cost!

3 0

4 years ago

Find the values of x and y.

Mekhanik [1.2K]

Woah I haven’t done this in a while but all sides have to add up to 180 and the top angle is 60 because it’s a 30, 60, 90 triangel.

3 0

3 years ago

What's 100,994 rounded to the nearest 100?

4vir4ik [10]

Answer: 101000

Step-by-step explanation: It would be rounded to 101000 because the nearest 100 would be a 1000.

3 0

3 years ago

Read 2 more answers

7 acres to square feet

NARA [144]

304,920 sqft is your answer

3 0

3 years ago

Halp I'm already in calculus even I'm still in grade 7...​

Halp I'm already in calculus even I'm still in grade 7...