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Anettt [7]
3 years ago
9

128 is 74% of what number

Mathematics
2 answers:
ale4655 [162]3 years ago
5 0
Hey mate!

You stuck?

128 is 74% of 172.972973 or 173 rounded

173x .74= 128.02 or 128 rounded


Hope this helps!
Firdavs [7]3 years ago
5 0
Solutions 

We know that 74% can be converted to 0.74 as a decimal. 

The word <span>"of" means "times" = Multiplication 

</span>128 = 0.74 times (y)

Isolate variable (y) 

Divide this equation by 0.74 :

128/0.74 = (Y) 

(Y) = 172.973<span> </span><span>

</span>
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Answer:

CI = 21 ± 0.365

Step-by-step explanation:

The confidence interval is:

CI = x ± SE * CV

where x is the sample mean, SE is the standard error, and CV is the critical value (either t score or z score).

Here, x = 21.

The standard error for a sample mean is:

SE = σ / √n

SE = 3.2 / √510

SE = 0.142

The critical value is looked up in a table or found with a calculator.  But first, we must find the alpha level and the critical probability.

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8 0
3 years ago
Help please
ddd [48]

Answer:

  • B. When the peak temperature is 40°C, 72 units of electricity are used on average.

Step-by-step explanation:

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<u>Approximate points:</u>

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<u>The slope of the line:</u>

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<u>The line is:</u>

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10 ÷ 218 ÷ 2.

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See the attachment below gor graph
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