abecobos37

02.01.2020 • 

Mathematics

The steps below show the incomplete solution to find the value of n for the equation 4n – 2n + 4 = –1 + 17:

step 1: 4n – 2n + 4 = –1 + 17

step 2: 4n – 2n + 4 = 16

step 3: 2n + 4 = 16

which of these is most likely the next step? (5 points)

2n = 12
2n = 4
2n = 8
2n = 20
6.
what is the value of z in the equation 2(4z – 9 – 7) = 166 – 46? (5 points)

19
21
26
34

Ответ:

cyanezc1313

14.01.2022

Mathematics

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For the first question 2n=12 because you have to isolate the variable and subtract 4 from both sides.

For the second one:
2(4z-9-7)=166-46
Distribute the 2 so you get:
8z-18-14=166-46
Combine like terms
8z-32=120
Add 32 to both sides and you get
8z=152
Divide both sides by 8 to get
z=19 is your answer

Hope this helped!

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Ответ:

luhmama

07.12.2020

Mathematics

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Divide the number of robins by the number of cardinals for each pair of values. The ratios are the same and are a constant of proportionality of 3.

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