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3 years ago

Rewrite 4^-2 without negative integers

Mathematics

1 answer:

Korvikt [17]3 years ago

3 0

Answer:

$\frac{1}{4^{2} }$

Step-by-step explanation:

(I think it is )

Flip it into a fraction and get rid of the negative:

4²

(you can further simply too by changing the into 4² 16)

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Is /1.33 a rational number

SpyIntel [72]

Yes, it is a rational number.

6 0

3 years ago

Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type.

Vinvika [58]

Answer:

The point estimate for population mean is 8.129 Mpa.

Step-by-step explanation:

We are given the following in the question:

Data on flexural strength(MPa) for concrete beams of a certain type:

11.8, 7.7, 6.5, 6.8, 9.7, 6.8, 7.3, 7.9, 9.7, 8.7, 8.1, 8.5, 6.3, 7.0, 7.3, 7.4, 5.3, 9.0, 8.1, 11.3, 6.3, 7.2, 7.7, 7.8, 11.6, 10.7, 7.0

a) Point estimate of the mean value of strength for the conceptual population of all beams manufactured

We use the sample mean, $\bar{x}$ as the point estimate for population mean.

Formula:

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$\bar{x} = \dfrac{\sum x_i}{n} = \dfrac{219.5}{27} = 8.129$

Thus, the point estimate for population mean is 8.129 Mpa.

4 0

3 years ago

Luis is finding 9-6+2. Find his mistake and correct it

valina [46]

Luis is finding 5 because 9 minus 6 is 3. 3 plus 2 equal 5 easy

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3 years ago

two trains depart the station in different directions. their paths are at a 90-degree angle from one another, as shown in the fo

myrzilka [38]

Answer:

8125t^2-11250t^2+5625 greater than or equal to > 100

Step-by-step explanation:

PLATO

5 0

2 years ago

PLEASE HELP!!! Which rule explains why these scalene triangles are similar

olchik [2.2K]

Answer: Ratio of Parts

<u>Step-by-step explanation:</u>

$\text{Ratio of sides:}\ \dfrac{ST}{WS+ST}=\dfrac{66}{6+66}=\dfrac{66}{72}=\dfrac{11}{12}\\\\\\\text{Ratio of bases:}\ \dfrac{TU}{TU+UV}=\dfrac{44}{44+4}=\dfrac{44}{48}=\dfrac{11}{12}\\\\$

The ratios are equal so the triangles are similar.

7 0

3 years ago