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-Dominant- [34]
2 years ago
12

May I please receive help?

Mathematics
1 answer:
Natalija [7]2 years ago
6 0

Answer:

<h2><u>L</u><u>i</u><u>n</u><u>e</u><u> </u><u>1</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>l</u><u>i</u><u>n</u><u>e</u><u> </u><u>2</u><u>:</u><u> </u><u>●</u><u>P</u><u>a</u><u>r</u><u>a</u><u>l</u><u>l</u><u>e</u><u>l</u><u> </u><u>○</u><u>P</u><u>e</u><u>r</u><u>p</u><u>e</u><u>n</u><u>d</u><u>i</u><u>c</u><u>u</u><u>l</u><u>a</u><u>r</u><u> </u><u>○</u><u>N</u><u>e</u><u>t</u><u>h</u><u>e</u><u>r</u></h2><h2><u>L</u><u>i</u><u>n</u><u>e</u><u> </u><u>1</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>l</u><u>i</u><u>n</u><u>e</u><u> </u><u>3</u><u>:</u><u> </u><u>○</u><u>P</u><u>a</u><u>r</u><u>a</u><u>l</u><u>l</u><u>e</u><u>l</u><u> </u><u>○</u><u>P</u><u>e</u><u>r</u><u>p</u><u>e</u><u>n</u><u>d</u><u>i</u><u>c</u><u>u</u><u>l</u><u>a</u><u>r</u><u> </u><u>●</u><u>N</u><u>e</u><u>t</u><u>h</u><u>e</u><u>r</u></h2><h2><u>L</u><u>i</u><u>n</u><u>e</u><u> </u><u>2</u><u> </u><u>a</u><u>n</u><u>d</u><u> </u><u>l</u><u>i</u><u>n</u><u>e</u><u> </u><u>3</u><u>:</u><u> </u><u>○</u><u>P</u><u>a</u><u>r</u><u>a</u><u>l</u><u>l</u><u>e</u><u>l</u><u> </u><u>●</u><u>P</u><u>e</u><u>r</u><u>p</u><u>e</u><u>n</u><u>d</u><u>i</u><u>c</u><u>u</u><u>l</u><u>a</u><u>r</u><u> </u><u>○</u><u>N</u><u>e</u><u>t</u><u>h</u><u>e</u><u>r</u></h2>

<h2><em><u>T</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>B</u></em><em><u>l</u></em><em><u>a</u></em><em><u>c</u></em><em><u>k</u></em><em><u> </u></em><em><u>c</u></em><em><u>i</u></em><em><u>r</u></em><em><u>c</u></em><em><u>l</u></em><em><u>e</u></em><em><u> </u></em><em><u>i</u></em><em><u>s</u></em><em><u> </u></em><em><u>t</u></em><em><u>h</u></em><em><u>e</u></em><em><u> </u></em><em><u>a</u></em><em><u>n</u></em><em><u>s</u></em><em><u>w</u></em><em><u>e</u></em><em><u>r</u></em></h2>

<em><u>h</u></em><em><u>o</u></em><em><u>p</u></em><em><u>e</u></em><em><u> </u></em><em><u>y</u></em><em><u>o</u></em><em><u>u</u></em><em><u> </u></em><em><u>a</u></em><em><u>d</u></em><em><u>d</u></em><em><u> </u></em><em><u>b</u></em><em><u>r</u></em><em><u>a</u></em><em><u>i</u></em><em><u>n</u></em><em><u>l</u></em><em><u>i</u></em><em><u>e</u></em><em><u>s</u></em><em><u>t</u></em><em><u> </u></em><em><u>a</u></em><em><u>n</u></em><em><u>d</u></em><em><u> </u></em><em><u>5</u></em><em><u> </u></em><em><u>s</u></em><em><u>t</u></em><em><u>r</u></em><em><u>a</u></em><em><u>s</u></em>

<h2>Step-by-step explanation:</h2><h2><em><u>G</u></em><em><u>o</u></em><em><u>o</u></em><em><u>d</u></em><em><u>b</u></em><em><u>l</u></em><em><u>u</u></em><em><u>c</u></em><em><u>k</u></em></h2>

<em><u>d</u></em><em><u>o</u></em><em><u>n</u></em><em><u>t</u></em><em><u> </u></em><em><u>f</u></em><em><u>o</u></em><em><u>r</u></em><em><u>g</u></em><em><u>e</u></em><em><u>t</u></em><em><u> </u></em><em><u>a</u></em><em><u>d</u></em><em><u>d</u></em><em><u> </u></em><em><u>b</u></em><em><u>r</u></em><em><u>a</u></em><em><u>i</u></em><em><u>n</u></em><em><u>l</u></em><em><u>i</u></em><em><u>e</u></em><em><u>s</u></em><em><u>t</u></em>

<em><u>a</u></em><em><u>n</u></em><em><u>d</u></em><em><u> </u></em><em><u>5</u></em><em><u> </u></em><em><u>s</u></em><em><u>t</u></em><em><u>a</u></em><em><u>r</u></em><em><u>s</u></em>

<h2><em><u>T</u></em><em><u>H</u></em><em><u>A</u></em><em><u>N</u></em><em><u>K</u></em><em><u> </u></em><em><u>Y</u></em><em><u>O</u></em><em><u>U</u></em><em><u>!</u></em><em><u>!</u></em><em><u>!</u></em></h2>

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What is 12% of 75? =)))
ankoles [38]

Answer:

Hope this helps!

Step-by-step explanation:

12% of 75 would be 9

5 0
2 years ago
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Some transportation experts claim that it is the variability of speeds, rather than the level of speeds, that is a critical fact
scZoUnD [109]

Answer:

Explained below.

Step-by-step explanation:

The claim made by an expert is that driving conditions are dangerous if the variance of speeds exceeds 75 (mph)².

(1)

The hypothesis for both the test can be defined as:

<em>H</em>₀: The variance of speeds does not exceeds 75 (mph)², i.e. <em>σ</em>² ≤ 75.

<em>Hₐ</em>: The variance of speeds exceeds 75 (mph)², i.e. <em>σ</em>² > 75.

(2)

A Chi-square test will be used to perform the test.

The significance level of the test is, <em>α</em> = 0.05.

The degrees of freedom of the test is,

df = n - 1 = 55 - 1 = 54

Compute the critical value as follows:

\chi^{2}_{\alpha, (n-1)}=\chi^{2}_{0.05, 54}=72.153

Decision rule:

If the test statistic value is more than the critical value then the null hypothesis will be rejected and vice-versa.

(3)

Compute the test statistic as follows:

\chi^{2}=\frac{(n-1)\times s^{2}}{\sigma^{2}}

    =\frac{(55-1)\times 94.7}{75}\\\\=68.184

The test statistic value is, 68.184.

Decision:

cal.\chi^{2}=68.184

The null hypothesis will not be rejected at 5% level of significance.

Conclusion:

The variance of speeds does not exceeds 75 (mph)². Thus, concluding that driving conditions are not dangerous on this highway.

7 0
3 years ago
Lucy is a dress maker. She sews 4/7 of a dress in 3/4 hour. Lucy sees at a constant rate. At this rate, how many dresses does lu
IgorLugansk [536]

Answer:

Lucy sews \frac{16}{21} dresses in 1 hour.

Step-by-step explanation:

Given:

Lucy sews \frac{4}{7} of a dress in \frac{3}{4} hour.

She sews at constant rate.

We need to find the number of dresses she makes in 1 hour.

In \frac{3}{4} hour = \frac{4}{7} dress

So in 1 hour = Number of dresses in 1 hour

By using Unitary method we get;

Number of dresses in 1 hour= \frac{\frac{4}{7}}{\frac{3}{4}} = \frac{4}{7}\times \frac{4}{3}= \frac{16}{21}

Hence Lucy sews \frac{16}{21} dresses in 1 hour.

5 0
3 years ago
The square of a number decreased by 15 is twice the number. find the number
jonny [76]

Answer:

x = 5, -3

Step-by-step explanation:

x² - 15 = 2x

x² - 2x - 15 = 0

(x - 5)(x + 3) = 0

6 0
3 years ago
Solve for x: 4x(3y-2)=7x+11
kupik [55]

Answer:

x=11(12y-15)

Step-by-step explanation:

4x(3y-2)=7x+11

12xy-8x=7x+11

12xy-8x-7x=11

12xy-15x=11

x(12y-15)=11

x(12y-15)/(12y-15)=11/(12y-15)

x=11/(12y-15)

7 0
3 years ago
Read 2 more answers
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