Can u guys please give me a thank you, I will do the same for u!!! Plus u will get points if u do

Can someone solve this it's really urgent please thank you

scZoUnD [109]

Answer:

461.875 cubic cm

Step-by-step explanation:

Volume of wood in the block

= volume of cuboid - 3 times the volume of one hemisphere

$=lbh - 3\times \frac{2}{3} \pi r^3\\= 20\times 7\times 4 - 2\times 3.14\times (2.5)^3\\= 560 - 6.28\times 15.625\\= 560 - 98.125\\= 461.875 \: cm^3$

8 0

3 years ago

Ellen thinks that is a line has no slope, then it never touches the y axis. Which line proves that her statement is incorrect?

olganol [36]

X= 0 is the answer !!

3 0

4 years ago

1. A right triangle has legs measuring 7 inches and 9 inches. What is true about the hypotenuse? *

JulsSmile [24]

Answer: The hypotenuse is about 11 inches and it is greater than the legs

Step-by-step explanation:

Hi, we have to apply the Pythagorean Theorem:

c^2 = a^2 + b^2

Where c is the hypotenuse of the triangle (the longest side) and a and b are the legs.

Replacing with the values given:

c^2 = 7^2 + 9^2

c^2 = 49+81

c^2 = 130

c = √130

c = 11.40 inches

The hypotenuse is about 11 inches and it is greater than the legs

11.40>7 ; 11.40 >9

Feel free to ask for more if needed or if you did not understand something.

8 0

4 years ago

Lee is a teacher at a local high school who wanted to assess whether or not dogs physically resemble their owners enough for peo

frozen [14]

Answer:

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to conclude that the population proportion of people who can correctly match a dog to their owner (out of two options) is better than just guessing

Step-by-step explanation:

From the question we are told that

The sample size is n = 16

The population proportion = 0.5

The number that of students that picked out the teachers dog is k = 14

Generally the sample proportion is mathematically represented as

$\^ p =\frac{k}{n}$

=> $\^ p =\frac{14}{16}$

=> $\^ p = 0.875$

The null hypothesis is $H_o : p = 0.5$

The null hypothesis is $H_o : p > 0.5$

Generally the test statistics is mathematically represented as

$z = \frac{\^ p - p }{\sqrt{ \frac{p(1- p )}{n} } }$

$z = \frac{0.875 - 0.50 }{\sqrt{ \frac{0.50 (1- 0.50 )}{16} } }$

$z = 3$

Generally the p-value is mathematically represented as

$p-value = P(Z > 3)$

From the z table the probability of Z>3 is mathematically represented as

$P(Z > 3) = 0.0013499$

So

$p-value = 0.0013499$

Let assume the level of significance is $\alpha = 0. 05$

Generally from the value obtained we see that $p-value < \alpha$ Hence

The decision rule is

Reject the null hypothesis

The conclusion is

There is sufficient evidence to conclude that the population proportion of people who can correctly match a dog to their owner (out of two options) is better than just guessing

3 0

4 years ago

I feel 12 less than 4 times a number is 8, the number is 5. Write a different sentence where the unknown number is also 5.

Lyrx [107]

9 less than 3 times a number is 6

8 0

4 years ago