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mezya [45]
3 years ago
9

6. Which expression is equivalent to 22 ?​ HURRY HELP FAST

Mathematics
1 answer:
qaws [65]3 years ago
8 0

Answer: 22+(-3)

Step-by-step explanation:

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A cylinder has a diameter of 18 inches and a volume of 405/2π cubic inches. What is the height, in inches, of the cylinder? Ente
notsponge [240]

Answer:

Step-by-step explanation:

diameter = 18 inches

radius = r = 18/2 = 9 in

Volume of cylinder = 405π/2

\pi r^{2}h = \frac{405}{2}\pi \\\\\\\pi * 9 * 9* h =\frac{405}{2}\pi \\\\\\h =\frac{405}{2*9*9*\pi }*\pi \\\\\\h=\frac{5}{2}

h = 2.5 inches

3 0
4 years ago
You conduct a simulation regarding which team spectators at a football game support. Your null hypothesis is that there are equa
Llana [10]

Answer:

As the <em>p</em>-value is too small the null hypothesis will be rejected concluding that there is a higher proportion of people supporting the home team.

Step-by-step explanation:

The hypothesis to determine which team spectators at a football game support is:

<em>H₀</em>: There are equal proportions of people supporting the home team and the visiting team, i.e. <em>p</em>₁ = <em>p</em>₂.

<em>Hₐ</em>: There is a higher proportion of people supporting the home team than the visiting team, i.e. <em>p</em>₁ > <em>p</em>₂.

A <em>z</em>-test for difference between proportions can be used to perform the test.

The test statistic is:

z=\frac{\hat p_{1}-\hat p_{2}}{\sqrt{P(1-P)\frac{1}{n_{1}}+\frac{1}{n_{2}}}}}

Th decision rule is:

If the <em>p</em>-value of the test is less than the significance level <em>α </em>then the null hypothesis will be rejected and vice-versa.

The commonly used significance levels are 0.01, 0.05 and 0.10.

The <em>p</em>-value of the test is computed as, <em>p</em> = 0.002.

The <em>p</em>-value of the test is less than all the significance level.

Thus, the null hypothesis will be rejected at any of the three significance level.

Conclusion:

As the <em>p</em>-value is too small the null hypothesis will be rejected concluding that there is a higher proportion of people supporting the home team.

7 0
4 years ago
An equation of the line that contains the origin and the point (1,2) is
Semmy [17]
(0,0)(1,2)......(0,0) is the origin
slope = (2-0) / (1-0) = 2/1 or just 2

y = mx + b
slope(m) = 2
(1,2)...x = 1 and y = 2
now we sub, we r looking for b, the y intercept
2 = 2(1) + b
2 = 2 + b
2 - 2 = b
0 = b

ur equation is : y = 2x + 0...or just y = 2x
3 0
4 years ago
Write 0.7 as a fraction. 7 is repeating.<br> a) 2/9<br> b) 4/9<br> c) 7/9<br> d) 8/9
yuradex [85]

Answer:

C

Step-by-step explanation:

C

6 0
4 years ago
Read 2 more answers
Construct a right angled triangle XYZ with 90 at angle Y, YZ=7.5cm and XY =6cm​
jeyben [28]

Answer:

1 draw a line of 7.5 cm YZ by scale

2 construct the 90 degree with the help of protecter

3 then cut arc of 6 cm on 90 degree of angle & mark as X

4 join X and Z by scale

6 0
3 years ago
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