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2 years ago

Yo please help me on this i’ll give u a brainliest

Mathematics

2 answers:

MaRussiya [10]2 years ago

7 0

Answer:

H=3m

Step-by-step explanation:

Volume of cylinder=pir^2h

75pi=pi5^2h

75/25=h

h=3

amid [387]2 years ago

6 0

Answer:

The height is 3 m.

Step-by-step explanation:

The formula for the volume of a cylinder is V=πr^2h, where V is the volume, r is the radius and h is the height.

We are given r, the radius, and the volume, so all we need to do is plug it into the formula and solve for h, our height.

V=πr^2h

Substitute V for 75π and r for 5

75π=π5^2h

Square 5

75π=25πh

Divide by 25π on both sides

3=h

3 m is the height.

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Find the missing Side of the triangle

sammy [17]

Answer:

2√15

Step-by-step explanation:

Use the Pythagorean theorem.

2² + x² = 8²

x² + 4 = 64

x² = 60

x² = 4 * 15

x = 2√15

3 0

2 years ago

A study sampled 350 upperclassmen (Group 1) and 250 underclassmen (Group 2) at high schools around the city of Houston. The stud

iris [78.8K]

Answer:

$-0.048$

Do not reject $H_0:P_1-P_2=0$

Step-by-step explanation:

From the question we are told that

Sample size $n_1=350$

Sample size $n_2=250$

Sample proportion 1 $\hat P= \frac{25}{350} =>0.07$

Sample proportion 2 $\hat P= \frac{19}{250} =>0.076$

95% confidence interval

Generally for 95% confidence level

Level of significance

$\alpha = 1-0.95=>0.05$

$\alpha /2=\frac{0.05}{2} =>0.025$

Therefore

$Z_a_/_2=1.96$

Generally the equation for confidence interval between $P_1 - P_2$ is mathematically given as

$(\hat P_1-\hat P_2)\pm Z_a_/_2\sqrt{\frac{\hat P_1(1-\hat P_1)}{n_1}+\frac{\hat P_2(1-\hat P_2)}{n_2} }$

$(0.07-0.076)\pm 1.96\sqrt{\frac{0.07(1-0.07)}{350}+\frac{0.076(1-0.076)}{250} }$

$(0.07-0.076)\pm 1.96\sqrt{4.66896*10^-^4 }$

$(-0.006)\pm 0.042$

$(-0.006)- 0.042=>-0.048$

$(-0.006)+ 0.042=>0.036$

Therefore

Confidence interval is

$-0.048$

Conclusion

Given the confidence interval has zero

Therefore do not reject $H_0:P_1-P_2=0$

6 0

2 years ago

B<br> idk........................................

Delicious77 [7]

Answer:

bruh idk either my brains to fried like chicken

Step-by-step explanation:

brainliest plz i only need one more plz

7 0

3 years ago

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Which of the following is the equation of a line perpendicular to the line y=-10×+1 passing through the point (5,7)

Juliette [100K]

Y = -10x + 1...slope here is -10. A perpendicular line will have a negative reciprocal slope. To find the negative reciprocal of a number, flip the number and change the sign. So our perpendicular line will need a slope of 1/10.

y = mx + b
slope(m) = 1/10
(5,7)....x = 5 and y = 7
now sub and find b, the y int
7 = 1/10(5) + b
7 = 1/2 + b
7 - 1/2 = b
14/2 - 1/2 = b
13/2 = b

so ur perpendicular line going thru (5,7) is y = 1/10x + 13/2

3 0

3 years ago

Dhruv is at a car dealership. He is going to randomly select a vehicle to test drive. There are 13 trucks, 8 vans, and 4 compact

qaws [65]

P(compact car) = number of compact cars / total number of cars = 4/25 = 16%

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3 years ago

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