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Yuri [45]
2 years ago
12

The radius of a circle is (2x-3). What is a function for the area of the circle?

Mathematics
1 answer:
Oduvanchick [21]2 years ago
6 0

Answer

A = pi * r^2

= pi * (2x^-3)^2

= pi * 2^2 * (x^-3)^2

= pi * 4 * (x^-6)

= 4*pi * x^-6

Step-by-step explanation:

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Find the number if: 4% of it is 31% of 16.4
alisha [4.7K]

Answer:

The number (x) is 127.1

Step-by-step explanation:

4% of a number (x) is equal to;

31% of 16.4

i.e 0.04x = 5.084

x = \frac{5.084}{0.04} = 127.1

The number (x) is 127.1

3 0
3 years ago
Read 2 more answers
Please help with this
Maksim231197 [3]

Answer:

that is very hard XD

Step-by-step explanation:

yes the answer wiil be 6{22238= Xyw

6 0
2 years ago
-2/5n = -30<br> What does n=
STatiana [176]
N= 75 (let me know if you need more help)
5 0
3 years ago
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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 419 gram setting. It is
Dahasolnce [82]

Answer:

The calculated t- value = 1.09 > 3.19 at 0.025 level of significance

Null hypothesis is rejected

There is sufficient evidence to support the claim that the bags are underfilled

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given the mean of the Population(μ)  = 419 grams

The sample size 'n' =19

Given mean of the sample x⁻ = 412

Given variance of the sample S² = 784

                                                 S = √784 = 28

<u><em>Step(ii)</em></u>:-

<u><em>Null hypothesis: H₀</em></u>: There is no sufficient evidence to support the claim that the bags are underfilled.

<u><em>Alternative hypothesis: H₁:</em></u>

There is sufficient evidence to support the claim that the bags are underfilled.

Test statistic

                     t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }

                    t = \frac{412 -419}{\frac{28}{\sqrt{19} } }

                   t = -1.09

                 |t| = |-1.09|

<em>Degrees of freedom   ν = n-1 = 19-1 =18</em>

<em>t₀.₀₂₅ =  3.19</em>

<u><em>Final answer:</em></u><em>-</em>

The calculated t- value = 1.09 > 3.19 at 0.025 level of significance

Null hypothesis is rejected

There is sufficient evidence to support the claim that the bags are underfilled

                   

8 0
3 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
2 years ago
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