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3 years ago

(3x + 7)5 Simply the expression

Mathematics

2 answers:

babunello [35]3 years ago

8 0

Answer:

15x+35

Step-by-step explanation:

$(3x + 7)5$

Use 5 to open the bracket

$3x \times 5 = 15x \\ 7 \times 5 = 35$

$15x + 35$

alexdok [17]3 years ago

4 0

Answer:

3x+35

Step-by-step explanation:

the ( is a times, you times 7 by 5 and get 35. there is no other number that has a x with it so it stays by itself. You can only do something with the x number if there is another x number.

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alisha [4.7K]

Hello from MrBillDoesMath!

Answer:

k = 10

Discussion:

angle MYK = 180 and angle MYX = 180 => angle ZYX = 180 - 115 - 65

Trialing XYZ has 180 degrees so

180 = (4k + 5) + (6k+10) + 65 => combine like terms

180 = (4k + 6k) + (5 + 10 + 65) => as 4k +6k = 10k

180 = 10k + 80 => subtract 80 from both sides

180 -80 = 100 = 10k => divide both sides by 10

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Thank you,

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4 years ago