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AleksandrR [38]
3 years ago
9

a marchig band with 75 members make 2 rectangular marching formations. one rectangle has six rows and the other has 9 rows.expla

in how the members can form the two rectangles
Mathematics
2 answers:
mariarad [96]3 years ago
7 0
*marching just to let you know the correct spelling
rewona [7]3 years ago
4 0
9+6 is 15, 75/15 is 5 so one has 30 amd the other has 45
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Circle the letter that is true about the grain size in rock
zavuch27 [327]
Well circle it m9 XD
7 0
3 years ago
PLEASE HELP AND ACTUALLY HELP!
aalyn [17]

Answer:

c = 5 cm

Step-by-step explanation:

Use Pythagorean Theorem

3^2 + 4^2 = x^2

9 + 16 = x^2

25 = x^2

x = 5

7 0
2 years ago
Read 2 more answers
Suppose that in a random selection of 100 colored​ candies, 28​% of them are blue. The candy company claims that the percentage
Zigmanuir [339]

Answer:

We conclude that the percentage of blue candies is equal to 29​%.

Step-by-step explanation:

We are given that in a random selection of 100 colored​ candies, 28​% of them are blue. The candy company claims that the percentage of blue candies is equal to 29​%.

Let p = <u><em>population percentage of blue candies</em></u>

So, Null Hypothesis, H_0 : p = 29%     {means that the percentage of blue candies is equal to 29​%}

Alternate Hypothesis, H_A : p \neq 29%     {means that the percentage of blue candies is different from 29​%}

The test statistics that will be used here is <u>One-sample z-test for</u> <u>proportions</u>;

                         T.S.  =  \frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n} } }  ~ N(0,1)

where, \hat p = sample proportion of blue coloured candies = 28%

           n = sample of colored​ candies = 100

So, <u><em>the test statistics</em></u> =  \frac{0.28-0.29}{\sqrt{\frac{0.29(1-0.29)}{100} } }

                                    =  -0.22

The value of the z-test statistics is -0.22.

<u>Also, the P-value of the test statistics is given by;</u>

               P-value = P(Z < -0.22) = 1 - P(Z \leq 0.22)

                            = 1 - 0.5871 = 0.4129

Now, at a 0.10 level of significance, the z table gives a critical value of -1.645 and 1.645 for the two-tailed test.

Since the value of our test statistics lies within the range of critical values of z, <u><em>so we insufficient evidence to reject our null hypothesis</em></u> as it will not fall in the rejection region.

Therefore, we conclude that the percentage of blue candies is equal to 29​%.

4 0
3 years ago
5 In a group of 80 animals, 32 are dogs. Dogs make up<br> what percent of the animals in the group?
lana [24]

Answer:

dogs=32

total animal=80

dogs percent=dogs/total animal×100%=32/80×100%=40%

3 0
3 years ago
Please help me with this question
mars1129 [50]

Answer:

<h2>4/5</h2>

Step-by-step explanation:

Look at the picture.

sine=\dfrac{opposite}{hypotenuse}

We need a hypotenuse length.

Use Pythagorean theorem:

hypotenuse^2=leg^2+leg^2

We have

leg=9,\ leg=12,\ hypotenuse=x

Substitute:

x^2=9^2+12^2\\\\x^2=81+144\\\\x^2=225\to x=\sqrt{225}\\\\x=15

For the sine we have:

opposite=12, hypotenuse=15

Substitute:

\sin\alpha=\dfrac{12}{15}=\dfrac{12:3}{15:3}=\dfrac{4}{5}

3 0
3 years ago
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