Find the mean number of calories for the hamburgers320280280250270

Mathematics

2 answers:

Gala2k [10]2 years ago

7 0

280. You add all the numbers up, and divide by how many numbers you have. (320+280+280+250+270)/5.

PolarNik [594]2 years ago

7 0

Mean = sum the total number of hamburgers/number of hamburgers
. = 320+280+280+250+270/5 = 280

Or arrange the numbers in order then pick the middle number which is 280 then the answer is 280

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What is the product of (2x-7) and (3x + 3)?

eduard

<h3>✒️EVALUATION </h3>

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$\large\sf\underline{Problem:}$

What is the product of (2x-7) and (3x + 3)?

A. 6x2 + 15x-21
B. 6x2 - 15x - 21
C. 6x2 + 15x + 21
D. 6x2 - 15x + 21

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$\large\sf\underline{Answer:}$

$\qquad \qquad \huge \rm Letter\:B.$

*Please read and understand my solution. Don't just rely on my direct answer*

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$\large\sf\underline{Solution:}$

Here we have the given choices:

A. 6x2 + 15x-21
B. 6x2 - 15x - 21
C. 6x2 + 15x + 21
D. 6x2 - 15x + 21

Solve this equation using the distributive property,where you multiply each term to get the number.

$\begin{gathered} \rm2x - 7 = \boxed{ 6} \: \bigg| \small\boxed{\: 6 {x}^{2} } \\ \rm (7)(3) = \boxed{21} \bigg | \boxed{\: 21 x} \\ \\ \qquad \rm6x^{2}+(6x- 21x)-21 \\ \qquad \boxed{ \rm6 {x}^{2} + 15x - 21}\end{gathered}$