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zhuklara [117]
3 years ago
8

A student skipped a step when she tried to convert 15 hours to seconds, and she got the following incorrect result:

Mathematics
1 answer:
givi [52]3 years ago
7 0

1hr/3600sec=15hr/x

(3600sec)(15hr)=(1hr)x

x=54000seconds

15 hours is 54000 seconds

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Monica has a triangular piece of fabric. The height of the triangle is 15 inches and the triangle’s base is 6 inches. Monica say
Ksenya-84 [330]

Answer:

let \: area \: be \: a, \: height \: be \: h, \: base \: be \: b \\ a =  \frac{1}{2} bh \\ a +  \delta \: a =  \frac{1}{2}  \times (b + \delta \: b)(h + \delta \: h) \\ a + \delta \: a =  \frac{1}{2} (bh + b\delta \: h + h\delta \: b + 0) \\  \delta \: a =  \frac{1}{2} (b\delta \: h + h\delta \: b) \\  \frac{\delta \: a}{a}  =  \frac{b\delta \: h + h\delta \: b}{bh}  \\  \frac{\delta \: a}{a}  =  | \frac{\delta \: h}{h} |  +  | \frac{\delta \: b}{b} |  \\  \frac{\delta \: a}{ 90}  =  \frac{0.5}{15}  +  \frac{0.5}{6}  \\ \delta \: a = 10.5 \:  {cm}^{2}

error is 10.5

4 0
3 years ago
Read 2 more answers
Plsss Help me plsssssssssssss
Mazyrski [523]

Answer:

If, a = 2 and b = 3

<h3>Jada</h3><h3>10a + 1b = 7a + 5b  - 3a + 4b \\ 10(2) + 1(3) = 7(2) + 5(3) - 3(2) + 4(3) \\ 20 + 3 = 14 + 15 - 6 + 12 \\ 23 = 35 \\</h3>

It's not equivalent.

<h3>Diego</h3><h3>4a + 9b = 7a + 5b - 3a + 4b \\ 4(2) + 9(3) = 7(2) + 5(3) - 3(2) + 4(3) \\ 8 + 27 = 14 + 15 - 6 + 12 \\ 35 = 35 \\</h3>

It's equivalent.

The correct equation is 4a + 9b.

5 0
3 years ago
Use the Distributive Property to complete the equivalent expression<br><br> 4(y – 3) =
Alona [7]

Answer:

4y - 12

Step-by-step explanation:

I hope this helps

5 0
3 years ago
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For a repeated-measures study comparing two treatments with 12 scores in each treatment, what is the df value for the t statisti
marishachu [46]

The degree of freedom for t statistic is 11.

According to the given question.

For a repeated-measure study, comparing two treatments with 12 scores in each treatment .

So, we can say that sample size, n = 12.

We know that, when you have a sample and estimate the mean, we have

n – 1 degrees of freedom, where n is the sample size.

Therefore,

The degree of freedom for the given sample test will be

d.f = n -1

⇒ d.f = 12 - 1

⇒ d.f = 11

Hence, the degree of freedom for t statistic is 11.

Find out more informaion about degree of freedom for sample test here:

brainly.com/question/24188394

#SPJ4

3 0
2 years ago
Please help. It would be great.
bezimeni [28]
Answer is BBBBBBBBBB trust
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3 years ago
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