3 years ago

What are the missing numbers?

Mathematics

2 answers:

Ivahew [28]3 years ago

7 0

Answer:

7,10.5,14

Step-by-step explanation:

for 3.5 times two you need to multiply the three by 2 and you get 6 and times.5 by two and you get a whole

Mashcka [7]3 years ago

4 0

Answer:

7, 10.5, 14

Step-by-step explanation:

just multiply :)

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3 years ago

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Korolek [52]

Step 1: Write out the function given

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Step 2: Interprete the question given

$\sum ^5_{k\mathop=1}f(\frac{k}{2})$

The question requested we find the summation of the first five terms for f(k/2), when k is 1, 2, 3, 4, and 5

Step 3: Find the expression for f(k/2)

$\begin{gathered} f(\frac{k}{2})=3(\frac{k}{2})^2-\frac{k}{2} \\ =\frac{3k^2}{4}-\frac{k}{2} \\ =\frac{3k^2-2k}{4} \end{gathered}$ $\begin{gathered} =\frac{3(1)^2-2(1)}{4}+\frac{3(2)^2-2(2)}{4}+\frac{3(3)^2-2(3)}{4}+\frac{3(4)^2-2(4)}{4}+\frac{3(5)^2-2(5)}{4} \\ =\frac{1+8+21+40+65}{4} \\ =\frac{135}{4} \\ =33.75 \end{gathered}$

Hence, the answer is 33.75

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1 year ago

3) An archer applies an average force of 200 N to draw the bow string back 1.3 m.

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