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1 year ago

Hi everyone please answer this thank you

Mathematics

1 answer:

ozzi1 year ago

8 0

Answer:

Answer for Q8: the smallest is 2 root 3 and the largest is 3 root 2

Answer for Q9: (x+y)(x-2)

Step-by-step explanation:

Q8: Type on a calculator to convert all of them to decimals and then compare

Q9: Factor by grouping. See attached.

You might be interested in

The ratio of boys and teacher in a school is 2:3 the ratio of teachers to the girls is 4:5.Find the ratio of all the three in a

Scorpion4ik [409]

Answer:

Step-by-step explanation:

2:3 boy:teacher 8:12

4:5 teacher:girl 12:15

8:12:15 boy:teacher:girl

7 0

2 years ago

(2x³+11x²+5)-(x³-2x²+2)<br>

SOVA2 [1]

Answer:x^3+13x^2+3

Step-by-step explanation:

(2x^3+11x^2+5)-(x^3-2x^2+2)

Clearing brackets

2x^3+11x^2+5-x^3+2x^2-2

Collect like terms

2x^3-x^3+11x^2+2x^2+5-2

x^3+13x^2+3

3 0

2 years ago

A tree casts you say shadow that is 9 feet long at the same time a person standing nearby casts a shadow that is 3 feet long if

inna [77]

we have that

Applying proportion

x/9=5.5/3

solve for x

x=9*(5.5/3)

x=16.5 ft

therefore

<h2>the answer is 16.5 ft</h2>

6 0

1 year ago

How do you get 3/5 of 20

saveliy_v [14]

Answer:

Multiply 20 by 3/5

Step-by-step explanation:

<em>"of" mean to multiply</em>

20 "of" 3/5 equal 12 OR 20 x 3/5 = 12

5 0

3 years ago

A researchers wants to determine the mean weight of avocados grown in Southern California. The population from which the sample

natka813 [3]

Answer: (0.465, 5.535)

Step-by-step explanation:

Formula to calculate the confidence interval (<em>when population standard deviation is unknown</em>) is given by :-

$\overline{x}\pm t_{\alpha/2} \dfrac{s}{\sqrt{n}}$

, where $\overline{x}$ = sample mean.

s= sample standard deviation.

n= Sample size.

$t_{\alpha/2}$ = critical value

By considering the given information , we have

$\overline{x}=6$

s=0.75

n= 9

Significance level = $\alpha=0.1$ [1-0.90=0.1]

By using students' t distribution -table , the critical value for 95% confidence level :

$t_{\alpha/2 , n-1}=t_{0.1/2,\ 8}=1.86$

[Note: degree of freedom = n-1]

Now, the 90% confidence interval for the true mean weight of these Southern California avocados will be :

$6\pm (1.86) \dfrac{0.75}{\sqrt{9}}$

$6\pm (1.86) \dfrac{0.75}{3}$

$6\pm (1.86) 0.25$

$6\pm 0.465=(6-0.465,\ 6+0.465)=(0.465,\ 5.535)$

Hence, the required confidence interval =(0.465, 5.535)

4 0

2 years ago

Hi everyone please answer this thank you​

Hi everyone please answer this thank you