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Paladinen [302]
3 years ago
8

Solve for z. 20 − (z + 7) = 0.9

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
7 0

Answer:

x = 12.1

Step-by-step explanation:

20 − (z + 7) = 0.9

Distribute the minus sign

20 -x -7 = .9

Combine like terms

13 -x = .9

Subtract 13 from each side

-x = -12.1

x = 12.1

omeli [17]3 years ago
7 0

Answer:

20 - (z + 7 ) = 0.9

20 - z - 7 = 0.9

13 - z = 0.9

- z = 0.9 - 13

-z = - 12.1

Divide both sides by -1

z = 12.1

Hope this helps.

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Determine what type of statistical test should be used to answer each of the questions below. (You will only use each response o
Svet_ta [14]

Answer:

1.One proportion

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4. One Mean

5. Means from Dependent Samples

6. Two Independent Means

Step-by-step explanation:

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From the above information, there is only one sample and the question is about proportion. So, we must use "One proportion".

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8 0
3 years ago
A store sells four-packs of permanent markers in assorted colors for $3.19 per pack. All spiral-bound notebooks, whether wide-ru
Gekata [30.6K]

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Step-by-step explanation:

Hi, to answer this question we have to write an expression.

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3.19 x (x number of packs purchased)

spiral-bound notebooks, whether wide-ruled or college-ruled, sell for $1.20 each

1.20 y + 1.20 z (y wide-ruled notebooks, and z college-ruled notebooks)

The store charges a 6% sales tax on Cleo’s total bill, so we have to multiply the expression by 1+ 0.06 ( 1+ tax percentage in decimal form)

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8 0
3 years ago
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gayaneshka [121]
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Answer:

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straight

neither

Step-by-step explanation:

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The second angle is less than 90 degrees so it is an acute angle

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Answer:

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Step-by-step explanation:

7 0
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