3 years ago

What is the solution to the equation?

Mathematics

2 answers:

Arturiano [62]3 years ago

5 0

Answer:

X= -6.50

Step-by-step explanation:

Explanation is in the picture above

vampirchik [111]3 years ago

3 0

Answer: B

Step-by-step explanation:

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Trying to finish this test at 3:30 am plz help

Angelina_Jolie [31]

Given:

The given sum is:

$\sum _{k=4}^9(5k+3)$

To find:

The expanded form and find the sum.

Solution:

We have,

$\sum _{k=4}^9(5k+3)$

The expanded form of given sum is:

$\sum _{k=4}^9(5k+3)=(5(4)+3)+(5(5)+3)+(5(6)+3)+(5(7)+3)+(5(8)+3)+(5(9)+3)$

$\sum _{k=4}^9(5k+3)=(20+3)+(25+3)+(30+3)+(35+3)+(4+3)+(45+3)$

$\sum _{k=4}^9(5k+3)=23+28+33+38+43+48$

$\sum _{k=4}^9(5k+3)=213$

Therefore, the correct option is C.

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Use fraction stripes to find the sum

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Step-by-step explanation:

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