3 years ago

Just need to check these answers

Mathematics

1 answer:

amid [387]3 years ago

3 0

Great Job! they are all correct. :)

Good luck in your next tests.

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<img src="https://tex.z-dn.net/?f=%28%20-4%20-%20%20%5Csqrt%7B%20-%206%29%20%7B%3F%7D%5E%7B2%7D%20%7D%20" id="TexFormula1" title

DerKrebs [107]

$\bf -4-\sqrt{(-6)^2}\implies -4-(-6)\implies \stackrel{\textit{recall minus times minus is \underline{plus}}}{-4+6\implies 2}$

3 0

3 years ago

Jackie has a circular shaped table. She wants to paint the circular top. If the radius of the circle is 3 feet, what is the area

finlep [7]

area of circle :- π r²

$\frac{22}{7} \times 3 \times 3 \: ft {}^{2} \\ \frac{22}{7} \times 9 {ft}^{2} \\ \frac{198}{7} = 28.26 {ft}^{2}$

6 0

2 years ago

Read 2 more answers

The distance on a ruler between 8cm and 26cm =

Ivahew [28]

Answer:

18 cm

Step-by-step explanation:

To find the distance, take the larger number and subtract the smaller number

26 cm - 8 cm

18 cm

8 0

2 years ago

Which is closest to the volume of this circular cone?

AleksandrR [38]

Step-by-step explanation:

here's your solution

=> volume of circular cone = (1/3)πr^2h

=> radius = 4 cm ,, height = 9 cm

=> volume of cone = (1/3)*(22/7)*16*9

=> volume of circular cone = 150.8 cm^3

$hope \: it \: helps$

4 0

3 years ago

Read 2 more answers

Last year, the standard deviation of the ages of the students at UA was 1.8 years. Recently, a sample of 31 students had a stand

scZoUnD [109]

Answer: $H_0: \sigma=1.8$

Step-by-step explanation:

Let $\sigma$ represents the standard deviation .

Given : Last year, the standard deviation of the ages of the students at UA was 1.8 years.

The researcher are interested in testing to see if there has been a significant change in the standard deviation of the ages of the students at UA.

We know that the null hypothesis always contains the equal signs, then the null and alternative hypothesis is given by :-

$H_0: \sigma=1.8\\\\ H_a:\sigma\neq1.8$

8 0

3 years ago